Ferrite bead

6.7 6.6 6.5 6.4 6.3 6.2 6.12014-06-052013-12-182013-04-172012-11-282012-10-232012-09-262012-06-26SStSStSStSStSStSStSStSStSStSStSStSMuSMuSStWürth Elektronik eiSos GmbH & Co. KGEMC & Inductive SolutionsMax-Eyth-Str. 174638 WaldenburgGermanyTel. +49 (0) 79 42 945 - 0A Dimensions: [mm]F1 Typical Impedance Characteristics:Test Equipment: E4991A or equivalentF2 Derating Curve:H1: Classification Reflow Profile for SMT components:H2: Classification Reflow ProfilesProfile FeaturePreheat- Temperature Min (T smin ) - Temperature Max (T smax ) - Time (t s ) from (T smin to T smax )Ramp-up rate (T L to T P )Liquidous temperature (T L )Time (t L ) maintained above T L Peak package body temperature (T p )Time within 5°C of actual peak temperature (t p )Ramp-down rate (T P to T L )Time 25°C to peak temperature Pb-Free Assembly 150°C 200°C60-120 seconds 3°C/ second max.217°C60-150 seconds See Table H320-30 seconds 6°C/ second max.8 minutes max.refer to IPC/JEDEC J-STD-020DH3: Package Classification Reflow TemperaturePB-Free Assembly PB-Free Assembly PB-Free Assembly Package Thickness< 1.6 mm 1.6 - 2.5 mm ≥ 2.5 mmVolume mm³<350260°C 260°C 250°CVolume mm³350 - 2000260°C 250°C 245°CVolume mm³>2000260°C 245°C 245°Crefer to IPC/JEDEC J-STD-020DH Soldering Specifications:I Cautions and Warnings:The following conditions apply to all goods within the product series of WE-CBFof Würth Elektronik eiSos GmbH & Co. KG:General:All recommendations according to the general technical specifications of the data sheet have to be complied with.The usage and operation of the product within ambient conditions, which probably alloy or harm the component surface, has to be avoided.If the product is potted in customer applications, the potting material might shrink during and after hardening. The product is exposed to the pressure of the potting material with the effect that the ferrite body and termination is possibly damaged by this pressure and so the electrical as well as the mechanical characteristics are endangered to be affected. After the potting material is cured, the ferrite body and termination of the product have to be checked if any reduced electrical or mechanical functions or destructions have occurred.The responsibility for the applicability of customer specific products and use in a particular customer design is always within the authority of the customer. All technical specifications for standard products do also apply to customer specific products.Cleaning agents that are used to clean the customer application might damage or change the characteristics of the component, body, pins or termination.Direct mechanical impact to the product shall be prevented as the ferrite material of the ferrite body could flake or in the worst case it could break.Product specific:Follow all instructions mentioned in the data sheet, especially:•The soldering profile has to be complied with according to the technical reflow soldering specification, otherwise this will void the warranty.• Wave soldering is only allowed after evaluation and approval.•All products shall be used before the end of the period of 12 months based on th product date code, if not a 100% solderability can´t be ensured.•Violation of the technical product specifications such as exceeding the nominal rated current will void the warranty.The general and product specific cautions comply with the state of the scientific and technical knowledge and are believed to be accurate and reliable; however, no responsibility is assumed for inaccuracies or incompleteness.1. General Customer ResponsibilitySome goods within the product range of Würth Elektronik eiSos GmbH & Co. KG contain statements regarding general suitability for certain application areas. These statements about suitability are based on our knowledge and experience of typical requirements concerning the are-as, serve as general guidance and cannot be estimated as binding statements about the suitability for a customer application. The responsibi-lity for the applicability and use in a particular customer design is always solely within the authority of the customer. Due to this fact it is up to the customer to evaluate, where appropriate to investigate and decide whether the device with the specific product characteristics described in the product specification is valid and suitable for the respective customer application or not.2. Customer Responsibility related to Specific, in particular Safety-Relevant ApplicationsIt has to be clearly pointed out that the possibility of a malfunction of electronic components or failure before the end of the usual lifetime can-not be completely eliminated in the current state of the art, even if the products are operated within the range of the specifications.In certain customer applications requiring a very high level of safety and especially in customer applications in which the malfunction or failure of an electronic component could endanger human life or health it must be ensured by most advanced technological aid of suitable design of the customer application that no injury or damage is caused to third parties in the event of malfunction or failure of an electronic component.Therefore, customer is cautioned to verify that data sheets are current before placing orders. The current data sheets can be downloaded at .3. Best Care and AttentionAny product-specific notes, cautions and warnings must be strictly observed. Any disregard will result in the loss of warranty.4. Customer Support for Product SpecificationsSome products within the product range may contain substances which are subject to restrictions in certain jurisdictions in order to serve spe-cific technical requirements. Necessary information is available on request. In this case the field sales engineer or the internal sales person in charge should be contacted who will be happy to support in this matter.5. Product R&DDue to constant product improvement product specifications may change from time to time. As a standard reporting procedure of the Product Change Notification (PCN) according to the JEDEC-Standard inform about minor and major changes. In case of further queries regarding the PCN, the field sales engineer or the internal sales person in charge should be contacted. The basic responsibility of the customer as per Secti-on 1 and 2 remains unaffected.6. Product Life CycleDue to technical progress and economical evaluation we also reserve the right to discontinue production and delivery of products. As a stan-dard reporting procedure of the Product Termination Notification (PTN) according to the JEDEC-Standard we will inform at an early stage about inevitable product discontinuance. According to this we cannot guarantee that all products within our product range will always be available. Therefore it needs to be verified with the field sales engineer or the internal sales person in charge about the current product availability ex-pectancy before or when the product for application design-in disposal is considered.The approach named above does not apply in the case of individual agreements deviating from the foregoing for customer-specific products.7. Property RightsAll the rights for contractual products produced by Würth Elektronik eiSos GmbH & Co. KG on the basis of ideas, development contracts as well as models or templates that are subject to copyright, patent or commercial protection supplied to the customer will remain with Würth Elektronik eiSos GmbH & Co. KG.Würth Elektronik eiSos GmbH & Co. KG does not warrant or represent that any license, either expressed or implied, is granted under any pa-tent right, copyright, mask work right, or other intellectual property right relating to any combination, application, or process in which Würth Elektronik eiSos GmbH & Co. KG components or services are used.8. General Terms and ConditionsUnless otherwise agreed in individual contracts, all orders are subject to the current version of the “General Terms and Conditions of Würth Elektronik eiSos Group”, last version available at .J Important Notes:The following conditions apply to all goods within the product range of Würth Elektronik eiSos GmbH & Co. KG:。

热处理常用词汇中英文对照热处理常用词汇中英文对照 indication 缺陷 test specimen 试样bar 棒材stock 原料billet 方钢，钢方坯bloom 钢坯,钢锭section 型材steel ingot 钢锭blank 坯料，半成品cast steel 铸钢nodular cast iron 球墨铸铁ductile cast iron 球墨铸铁bronze 青铜brass 黄铜copper 合金stainless steel不锈钢decarburization 脱碳scale 氧化皮anneal 退火process anneal 进行退火quenching 淬火normalizing 正火Charpy impact text 夏比冲击试验fatigue 疲劳tensile testing 拉伸试验solution 固溶处理aging 时效处理Vickers hardness维氏硬度Rockwell hardness 洛氏硬度Brinell hardness 布氏硬度hardness tester硬度计descale 除污，除氧化皮等ferrite 铁素体austenite 奥氏体martensite马氏体cementite 渗碳体iron carbide 渗碳体solid solution 固溶体sorbite 索氏体bainite 贝氏体pearlite 珠光体nodular fine pearlite/ troostite屈氏体black oxide coating 发黑grain 晶粒chromium 铬cadmium 镉tungsten 钨molybdenum 钼manganese 锰vanadium 钒molybdenum 钼silicon 硅sulfer/sulphur 硫phosphor/ phosphorus 磷nitrided 氮化的case hardening 表面硬化，表面淬硬air cooling 空冷furnace cooling 炉冷oil cooling 油冷electrocladding /plating 电镀brittleness 脆性strength 强度rigidity 刚性,刚度creep 蠕变deflection 挠度elongation 延伸率yield strength 屈服强度elastoplasticity 弹塑性metallographic structure 金相组织metallographic test 金相试验carbon content 含碳量induction hardening 感应淬火impedance matching 感应淬火hardening and tempering 调质crack 裂纹shrinkage 缩孔，疏松forging 锻（件）casting 铸（件）rolling 轧（件）drawing 拉（件）shot blasting 喷丸（处理）grit blasting 喷钢砂（处理）sand blasting 喷砂（处理）carburizing 渗碳nitriding 渗氮ageing/aging 时效grain size 晶粒度pore 气孔sonim 夹砂cinder inclusion 夹渣lattice晶格abrasion/abrasive/rub/wear/wearing resistance (property) 耐磨性 spectrum analysis光谱分析heat/thermal treatment 热处理inclusion 夹杂物segregation 偏析picking 酸洗，酸浸residual stress 残余应力remaining stress 残余应力relaxation of residual stress 消除残余应力stress relief 应力释放械类常用英语：常用加工机械械类常用英语：常用加工机械3D coordinate measurement 三次元量床boring machine 搪孔机cnc milling machine CNC铣床contouring machine 轮廓锯床copy grinding machine 仿形磨床copy lathe 仿形车床copy milling machine 仿形铣床copy shaping machine 仿形刨床cylindrical grinding machine 外圆磨床die spotting machine 合模机drilling machine ?孔机engraving machine 雕刻机engraving E.D.M. 雕模放置加工机form grinding machine 成形磨床graphite machine 石墨加工机horizontal boring machine 卧式搪孔机horizontal machine center 卧式加工制造中心internal cylindrical machine 内圆磨床jig boring machine 冶具搪孔机jig grinding machine 冶具磨床lap machine 研磨机machine center 加工制造中心multi model miller 靠磨铣床NC drilling machine NC钻床NC grinding machine NC磨床NC lathe NC车床NC programming system NC程式制作系统planer 龙门刨床profile grinding machine 投影磨床projection grinder 投影磨床radial drilling machine 旋臂?床shaper 牛头刨床surface grinder 平面磨床try machine 试模机turret lathe 转塔车床universal tool grinding machine 万能工具磨床vertical machine center 立式加工制造中心wire E.D.M. 线割放电加工机机械术语中英文对照(二)Bending: 挠曲witness test订货人在场的试验Welding: 焊接Threading: 车缧纹Leveling：校平color identification 彩色识别Alignment：对准,定位调整check against 检查, 核对Fixing：固定Console：控制台cubicle室,箱audit 审计material certificate.材料合格证vertical panel竖直面板power distribution panel 配电盘gauge board仪表板beveling 磨斜棱,磨斜边local panel 现场配电盘grouting 灌浆fabrication 加工,制造instrument rack 计测器支架tank gauge 液面计flushing 冲洗，填缝analyzer分析器piping管道敷设tubing敷设管道cable fitting电缆配件elbow.弯管接头main pipe 主管道bend.弯管弯头solvent 溶剂postweld heat treatment 焊后热处理jig.夹具arc gouging 电弧刨削chipping修琢machining 机械加工bridges.管式桥clamp.夹钳tack welding 点焊butt welding 对接焊grinder. 磨床commencement.开始gusset plate角撑板, 加固板process pipe 工艺管道land 纹间表面tee 三通管丁字钢T形梁opening 开口reinforcing pad.补强垫,增强衬板flux 焊剂wet developer 湿显像剂blowhole气泡,气孔inclusion 杂质imperfection 缺陷limitation 限度valve 阀,闸门structural attachment 结构附件tapered allowance 削尖余量tack welding 平头焊接sputter 喷溅scale 废料lateral translation侧向平移weld joint 焊缝, 焊接接头plug.塞fusion 熔融base material基底材料lead foil 铅箔intensifying screen 增光屏, 光增强屏pressure test.压力试验film density.影片密度line number行数leak test漏泄试验plate thickness 筛板厚度restoration修理field fabricated 工地制造的,现场装配的junction box.接线盒flow sheet 流程图vent 放气孔, 通风孔drain 排水管instrument air仪表气源blind挡板pipe arrangement 管配置civil engineer.土木工程师bus duct 母线槽substation分站flow instrument 流量计power distribution panel 配电盘level instrument 位面计, 水平仪pressure instrument 压力仪表/压力计level switch (信号)电平开关,gage glass 液位玻璃管pilot tube指示灯line check 小检修recalibration.复校,重新校准blinding plate盲板expansion joint 伸缩接头hydrostatic pressure test静水压试验pneumatic pressure 气压scaffolding脚手架check valve止回阀liquid penetrant examination液体渗透探伤test pump试验泵witnessed inspections 现场检测hanger吊架control valve控制阀,fabrication drawing 制造图纸,制作图schedule number表示管壁厚度系列的号码hydrostatic test .流体静力学试验,水压试验design pressure 设计压力disposition notice 处罚通知书pipe stanchion 管支柱bellow type 波纹管式expansion joint 伸缩接头vibration stopper：减震器subcontractor 转包商WPS Works Process Specification 典型工艺规程piping.管道系统flange.凸缘sleeve 套筒ferritic .铁素体的identification mark 识别标志stencil.模绘片版,镂花模板stamping .冲压silicone paint硅树脂油漆weld bead 焊缝automatic temperature recorder 温度自动记录器penetrameter 透度计film viewer底片观察用光源civil works土建工程，建筑工程lump sum price 混合价格,统包价格scrap material废料caulking metal填隙合金[金属](材料) application drawing操作图, 应用图cable routing电缆路由选择channel bases沟渠基底vertical panel竖直面板local panel 现场配电盘power distribution panel 配电盘gauge board样板, 模板规准尺anchor bolt 锚定螺栓expansion bolt 伸缩栓, 扩开螺栓field instrument.携带式仪表instrument rack 计测器支架,计测器框架tank gauge 油箱液位计guide wire 尺度[定距]索,准绳name plate名牌, 商标lead pipe铅管take-off valve输出阀sub-header分联箱air header 集气管pneumatic signal气动信号steam trace 加热蒸汽管道electric heat tracing.电伴随加热cable trunk 电缆管道stop end封端fire barriers防火间隔bonding wire 接合线, 焊线conduit box [电]导管分线匣rigid conduits 刚性导管flexible conduit软管conduit entry 导管引入装置road crossing duct bank平交道口管道组Capping ends顶盖末端cable armor电缆铠装Cable sheath电缆包皮层sealing compound电缆膏coaxial cable同轴电缆loop test环路测试sequence test.联锁顺序试验lintel beam 水平横楣梁flash plate闪熔镀层anchor bolt 地脚螺栓expansion bolt伸缩栓, 扩开螺栓shim plate 垫板push button station按钮式控制站logic diagram逻辑图calculation sheet计算书flow instrument流量计level instrument 位面计, 水平仪layout drawing 布置图tie band捆扎用带材Heating boxes加热室cutting opening切孔control valve actuator 阀控传动机构air set空气中凝固, 常温自硬自然硬化solenoid valve.螺线管阀,电磁阀calorimeter热量计odometer历程标tachometer转速计chronometer精密计时表机械工具词汇中英文对照扳子spanner (美作:wrench)双头扳子double-ended spanner活扳子,活络扳手adjustable spanner, monkey wrench 管钳子box spanner (美作:socket wrench)卡规calipers夹钳pincers, tongs剪子shears钢锯hacksaw剪线钳wire cutters万能手钳multipurpose pliers, universal pliers可调手钳adjustable pliers冲子punch钻drill卡盘chuck三角刮刀scraper扩孔钻reamer孔径规calliper gauge铆钉rivet螺母nut自锁螺母,防松螺母locknut螺栓bolt销钉pin, peg, dowel垫圈washerU形钉staple油壶oil can工作服jack注油枪grease gun机械加工抛光polishing安装to assemble衬套bushing半机械化semi-mechanization; semi-mechanized 半自动滚刀磨床semi-automatic hob grinder半自动化semi-automation; semi-automatic扳手wrench备件spare parts边刨床side planer变速箱transmission gear柄轴arbor部件units; assembly parts插床slotting machine拆卸to disassemble超高速内圆磨床ultra-high-speed internal grinder 车床lathe; turning lathe车刀lathe tool车轮车床car wheel lathe车削turning车轴axle模具工程常用词汇die 模具figure file, chart file图档cutting die, blanking die冲裁模progressive die, follow (-on)die连续模compound die复合模punched hole冲孔panel board镶块to cutedges=side cut=side scrap切边to bending折弯to pull, to stretch拉伸Line streching, line pulling线拉伸engraving, to engrave刻印upsiding down edges翻边to stake铆合designing, to design设计design modification设计变化die block模块folded block折弯块sliding block滑块location pin定位销lifting pin顶料销die plate, front board模板padding block垫块stepping bar垫条upper die base上模座lower die base下模座upper supporting blank上承板upper padding plate blank上垫板spare dies模具备品spring 弹簧bolt螺栓document folder文件夹file folder资料夹to put file in order整理资料spare tools location手工备品仓first count初盘人first check初盘复棹人second count 复盘人second check复盘复核人equipment设备waste materials废料work in progress product在制品casing = containerazation装箱quantity of physical invetory second count 复盘点数量quantity of customs count会计师盘,点数量the first page第一联filed by accounting department for reference会计部存查end-user/using unit(department)使用单位summary of year-end physical inventory bills年终盘点截止单据汇总表bill name单据名称This sheet and physical inventory list will be sent to accounting department together (Those of NHK will be sent to financial department)本表请与盘点清册一起送会计部－(NHK厂区送财会部)Application status records of year-end physical inventory List and physical inventory card 年终盘点卡与清册使用－状况明细表blank and waste sheet NO.空白与作废单号plate电镀mold成型material for engineering mold testing工程试模材料not included in physical inventory不列入盘点sample样品incoming material to be inspected进货待验description品名steel/rolled steel钢材material statistics sheet物料统计明细表meeting minutes会议记录meeting type 会别distribution department分发单位location地点chairman主席present members出席人员subject主题conclusion结论decision items决议事项responsible department负责单位pre-fixed finishing date预定完成日approved by / checked by / prepared by核准/审核/承办PCE assembly production schedule sheetPCE组装厂生产排配表model机锺work order工令revision版次remark备注production control confirmation生产确认checked by初审approved by核准department部门stock age analysis sheet库存货龄分析表on-hand inventory现有库存available material良品可使用obsolete material良品已呆滞to be inspected or reworked待验或重工total合计cause description原因说明part number/ P/N 料号type形态item/group/class类别quality品质prepared by制表notes说明year-end physical inventory difference analysis sheet年终盘点差异分析表physical inventory盘点数量physical count quantity帐面数量difference quantity差异量cause analysis原因分析raw materials原料materials物料finished product成品semi-finished product半成品packing materials包材good product/accepted goods/ accepted parts/good parts良品defective product/non-good parts不良品disposed goods处理品warehouse/hub仓库on way location在途仓oversea location海外仓spare parts physical inventory list备品盘点清单spare molds location模具备品仓skid/pallet栈板tox machine自铆机wire EDM线割EDM放电机coil stock卷料sheet stock片料tolerance工差score=groove压线cam block滑块pilot导正筒trim剪外边pierce剪内边drag form压锻差pocket for the punch head挂钩槽slug hole废料孔feature die公母模expansion dwg展开图radius半径shim(wedge)楔子torch-flame cut火焰切割set screw止付螺丝form block折刀stop pin定位销round pierce punch=die button圆冲子shape punch=die insert异形子stock locater block定位块under cut=scrap chopper清角active plate活动板baffle plate挡块cover plate盖板male die公模female die母模groove punch压线冲子air-cushion eject-rod气垫顶杆spring-box eject-plate弹簧箱顶板bushing block衬套insert 入块club car高尔夫球车capability能力parameter参数factor系数phosphate皮膜化成viscosity涂料粘度alkalidipping脱脂main manifold主集流脉bezel斜视规blanking穿落模dejecting顶固模demagnetization去磁;消磁high-speed transmission高速传递heat dissipation热传rack上料degrease脱脂rinse水洗alkaline etch龄咬desmut剥黑膜D.I. rinse纯水次Chromate铬酸处理Anodize阳性处理seal封孔revision版次part number/P/N料号good products良品scraped products报放心品defective products不良品finished products成品disposed products处理品barcode条码flow chart流程表单assembly组装stamping冲压molding成型spare parts=buffer备品coordinate座标dismantle the die折模auxiliary fuction辅助功能poly-line多义线heater band 加热片thermocouple热电偶sand blasting喷沙grit 砂砾derusting machine除锈机degate打浇口dryer烘干机induction感应induction light感应光response=reaction=interaction感应ram连杆edge finder巡边器concave凸convex凹short射料不足nick缺口speck瑕??shine亮班splay 银纹gas mark焦痕delamination起鳞cold slug冷块blush 导色gouge沟槽;凿槽satin texture段面咬花witness line证示线patent专利grit沙砾granule=peuet=grain细粒grit maker抽粒机cushion缓冲magnalium镁铝合金magnesium镁金metal plate钣金lathe车mill锉plane刨grind磨drill钻boring镗blinster气泡fillet镶;嵌边through-hole form通孔形式voller pin formality滚针形式cam driver铡楔shank摸柄crank shaft曲柄轴augular 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(总称)人员,员工 2. 人事部门;人事课(或室等)production department生产部门planning department企划部QC Section品管科stamping factory冲压厂painting factory烤漆厂molding factory成型厂common equipment常用设备uncoiler and straightener整平机punching machine 冲床robot机械手hydraulic machine油压机lathe车床planer |'plein|刨床miller铣床grinder磨床driller??床linear cutting线切割electrical sparkle电火花welder电焊机staker=reviting machine铆合机position职务president董事长general manager总经理special assistant manager特助factory director厂长department director部长deputy manager | =vice manager副理section supervisor课长deputy section supervisor =vice section superisor副课长group leader/supervisor组长line supervisor线长assistant manager助理to move, to carry, to handle搬运be put in storage入库pack packing包装to apply oil擦油to file burr 锉毛刺final inspection终检to connect material接料to reverse material 翻料wet station沾湿台Tiana天那水cleaning cloth抹布to load material上料to unload material卸料to return material/stock to退料scraped |'skræpid|报废scrape ..v.刮;削deficient purchase来料不良manufacture procedure制程deficient manufacturing procedure制程不良oxidation |' ksi'dei n|氧化scratch刮伤dents压痕defective upsiding down抽芽不良defective to staking铆合不良embedded lump镶块feeding is not in place送料不到位stamping-missing漏冲production capacity生产力education and training教育与训练proposal improvement提案改善spare parts=buffer备件forklift叉车trailer=long vehicle拖板车compound die合模die locker锁模器pressure plate=plate pinch压板bolt螺栓name of a department部门名称administration/general affairs dept总务部automatic screwdriver电动启子thickness gauge厚薄规gauge(or jig)治具power wire电源线buzzle蜂鸣器defective product label不良标签identifying sheet list标示单screwdriver holder起子插座pedal踩踏板stopper阻挡器flow board流水板hydraulic handjack油压板车forklift叉车pallet栈板glove(s)手套glove(s) with exposed fingers割手套thumb大拇指forefinger食指midfinger中指ring finger无名指little finger小指band-aid创可贴iudustrial alcohol工业酒精alcohol container沾湿台head of screwdriver起子头sweeper扫把mop拖把vaccum cleaner吸尘器rag 抹布garbage container灰箕garbage can垃圾箱garbage bag垃圾袋chain链条jack升降机production line流水线chain链条槽magnetizer加磁器lamp holder灯架to mop the floor拖地to clean the floor扫地to clean a table擦桌子air pipe 气管packaging tool打包机packaging打包missing part漏件wrong part错件excessive defects过多的缺陷critical defect极严重缺陷major defect主要缺陷minor defect次要缺陷not up to standard不合规格dimension/size is a little bigger尺寸偏大(小) cosmetic defect外观不良slipped screwhead/slippery screw head螺丝滑头slipped screwhead/shippery screw thread滑手speckle斑点mildewed=moldy=mouldy发霉rust生锈deformation变形burr(金属)flash(塑件)毛边poor staking铆合不良excesssive gap间隙过大grease/oil stains油污inclusion杂质painting peel off脏污shrinking/shrinkage缩水mixed color杂色scratch划伤poor processing 制程不良poor incoming part事件不良fold of pakaging belt打包带折皱painting make-up补漆discoloration羿色water spots水渍polishing/surface processing表面处理exposed metal/bare metal金属裸露lack of painting烤漆不到位safety安全quality品质delivery deadline交货期cost成本engineering工程die repair模修enterprise plan = enterprise expansion projects企划QC品管die worker模工production, to produce生产equipment设备to start a press开机stop/switch off a press关机classification整理regulation整顿cleanness清扫conservation清洁culture教养qualified products, up-to-grade products良品defective products, not up-to-grade products不良品waste废料board看板feeder送料机sliding rack滑料架defective product box不良品箱die change 换模to fix a die装模to take apart a die拆模to repair a die修模packing material包材basket蝴蝶竺plastic basket胶筐isolating plate baffle plate; barricade隔板carton box纸箱to pull and stretch拉深to put material in place, to cut material, to input落料to impose lines压线to compress, compressing压缩character die字模to feed, feeding送料transportation运输(be)qualfied, up to grade合格not up to grade, not qualified不合格material change, stock change材料变更feature change 特性变更evaluation评估prepare for, make preparations for 准备parameters参数rotating speed, revolution转速manufacture management制造管理abnormal handling异常处理production unit生产单位lots of production生产批量steel plate钢板roll material卷料manufacture procedure制程operation procedure作业流程to revise, modify修订to switch over to, switch---to throw--over switching over切换engineering, project difficulty工程瓶颈stage die工程模automation自动化to stake, staking, reviting铆合add lubricating oil加润滑油shut die架模shut height of a die架模高度analog-mode device类模器die lifter举模器argon welding氩焊vocabulary for stamping冲压常词汇stamping, press冲压punch press, dieing out press冲床uncoiler & strainghtener整平机feeder送料机rack, shelf, stack料架cylinder油缸robot机械手taker取料机conveyer belt输送带transmission rack输送架top stop上死点bottom stop下死点one stroke一行程inch寸动to continue, cont.连动to grip(material)吸料location lump, locating piece, block stop 定位块reset复位smoothly顺利dent压痕scratch刮伤deformation变形filings铁削to draw holes抽孔inquiry, search for查寻to stock, storage, in stock库存receive领取approval examine and verify审核processing, to process加工delivery, to deliver 交货to return delivenry to.to send delinery backto retrn of goods退货registration登记registration card登记卡to control管制to put forward and hand in提报safe stock安全库存acceptance = receive验收to notice通知application form for purchase请购单consume, consumption消耗to fill in填写abrasion磨损reverse angle = chamfer倒角character die字模to collect, to gather收集failure, trouble故障statistics统计demand and supply需求career card履历卡to take apart a die卸下模具to load a die装上模具to tight a bolt拧紧螺栓to looser a bolt拧松螺栓to move away a die plate移走模板easily damaged parts易损件standard parts标准件breaking.(be)broken,(be)cracked 断裂to lubricate润滑common vocabulary for die engineering 金属切削metal cutting机床machine tool金属工艺学technology of metals刀具cutter电路circuit半导体元件semiconductor element反馈feedback发生器generator直流电源DC electrical source门电路gate circuit逻辑代数logic algebra逻辑电路logic circuit触发器flip-flop脉冲波形pulse shape数模digital analogy液压传动机构fluid drive mechanism 机械零件mechanical parts摩擦friction联结link传动drive/transmission轴shaft弹性elasticity频率特性frequency characteristic误差error响应response定位allocation机床夹具jig动力学dynamic运动学kinematic静力学static分析力学analyse mechanics拉伸pulling压缩hitting剪切shear扭转twist弯曲应力bending stress强度intensity三相交流电three-phase AC磁路magnetic circles变压器transformer异步电动机asynchronous motor几何形状geometrical精度precision正弦形的sinusoid交流电路AC circuit机械加工余量machining allowance 变形力deforming force变形deformation应力stress硬度rigidity热处理heat treatment退火anneal正火normalizing脱碳decarburization渗碳carburization淬火冷却quench淬火hardening回火tempering调质hardening and tempering 磨粒abrasive grain结合剂bonding agent砂轮grinding wheel外圆磨削external grinding内圆磨削internal grinding平面磨削plane grinding变速箱gearbox离合器clutch绞孔fraising绞刀reamer螺纹加工thread processing螺钉screw铣削mill铣刀milling cutter功率power工件workpiece齿轮加工gear mechining齿轮gear主运动main movement主运动方向direction of main movement进给方向direction of feed进给运动feed movement合成进给运动resultant movement of feed合成切削运动resultant movement of cutting合成切削运动方向direction of resultant movement of cutting 切削深度cutting depth前刀面rake face刀尖nose of tool前角rake angle后角clearance angle龙门刨削planing主轴spindle主轴箱headstock卡盘chuck加工中心machining center车刀lathe tool车床lathe钻削镗削bore车削turning磨床grinder基准benchmark钳工locksmith锻forge压模stamping焊weld拉床broaching machine拉孔broaching装配assembling铸造found流体动力学fluid dynamics流体力学fluid mechanics加工machining液压hydraulic pressure切线tangent机电一体化mechanotronics mechanical-electrical integration 气压air pressure pneumatic pressure稳定性stability介质medium液压驱动泵fluid clutch液压泵hydraulic pump阀门valve失效invalidation强度intensity载荷load应力stress安全系数safty factor可靠性reliability螺纹thread螺旋helix键spline销pin滚动轴承rolling bearing滑动轴承sliding bearing弹簧spring制动器arrester brake十字结联轴节crosshead联轴器coupling链chain皮带strap精加工finish machining粗加工rough machining变速箱体gearbox casing腐蚀rust氧化oxidation磨损wear耐用度durability随机信号random signal离散信号discrete signal超声传感器ultrasonic sensor 集成电路integrate circuit挡板orifice plate。

说说磁珠(Ferrite Bead)第一次使用磁珠还是在实习的时候，但是看原理图发现有个元件写着”Bea d”，单位是100欧姆，用万用表测，导通，电阻约为0。

当时就很奇怪，是什么有什么用？后来问了师兄，才知道，这个是磁珠，相当于电感，通直流阻交流(不准确)。

这就是我当初对磁珠的印象。

磁珠全称为铁氧体磁珠，Ferrite Bead，简写FB。

磁珠的单位是欧姆，而不是亨特，这一点要特别注意。

因为磁珠的单位是按照它在某一频率产生的阻抗来标称的，阻抗的单位也是欧姆。

磁珠的 DATASH EET上一般会提供频率和阻抗的特性曲线图，一般以100MHz为标准，比如60 0R@100MHz，意思就是在100MHz频率的时候磁珠的阻抗相当于600欧姆。

磁珠的结构X射线下的结构(真的活像线圈)磁珠的等效模型R bead是磁珠的直流电阻；L bead是磁珠的等效电感；Cpar和Rpar是并联电容和电阻。

在低频的时候，Cpar开路，L bead短路，只有直流电阻R bead。

当频率增加的时候，阻抗(JwL bead)随着L bead的增加线性增加，阻抗(1/jwCpar)随着Cpar的减小而相反增长。

磁珠的阻抗频率曲线图上升斜率主要由电感L bead决定。

在高频到达一定频率点时，Cpar的阻抗开始起主要作用。

磁珠的阻抗开始减小。

阻抗频率曲线的斜率下降主要由磁珠的寄生电容Cpar所决定。

Rpar对抑制品质因素(Q-factor)有作用，无论如何，Rpar和Cpar的值增长过大会增加磁珠的品质因素和减小磁珠的有效带宽。

高品质因素(Q)可能导致电源输送网络瞬态频率响应不想要的抬升。

Z=R+jxZ：阻抗R：电阻X：电抗磁珠的电性参数Z(阻抗) [Z]@100MHz (ohm)磁珠的阻抗是指在电流下所有阻抗的总和，包括交流与直流部分。

阻抗的直流部分仅仅是绕线的直流电阻，交流部分包括电感电抗。

下面的公式计算了一个理想电感在正弦交流信号下的电感电抗。

什么是磁珠？（Ferrite['ferait] bead[bi:d]）磁珠有很高的电阻率和磁导率，他等效于电阻和电感串联，但电阻值和电感值都随频率变化。

他比普通的电感有更好的高频滤波特性，在高频时呈现阻性，所以能在相当宽的频率范围内保持较高的阻抗，从而提高调频滤波效果。

作为电源滤波，可以使用电感。

磁珠的电路符号就是电感但是型号上可以看出使用的是磁珠在电路功能上，磁珠和电感是原理相同的，只是频率特性不同罢了磁珠由氧磁体组成，电感由磁心和线圈组成，磁珠把交流信号转化为热能，电感把交流存储起来，缓慢的释放出去。

磁珠对高频信号才有较大阻碍作用，一般规格有100欧/100mMHZ ,它在低频时电阻比电感小得多。

铁氧体磁珠(Ferrite Bead) 是目前应用发展很快的一种抗干扰组件，廉价、易用，滤除高频噪声效果显着。

在电路中只要导线穿过它即可（我用的都是象普通电阻模样的，导线已穿过并胶合，也有表面贴装的形式，但很少见到卖的）。

当导线中电流穿过时，铁氧体对低频电流几乎没有什么阻抗，而对较高频率的电流会产生较大衰减作用。

高频电流在其中以热量形式散发，其等效电路为一个电感和一个电阻串联，两个组件的值都与磁珠的长度成比例。

磁珠种类很多，制造商应提供技术指标说明，特别是磁珠的阻抗与频率关系的曲线。

有的磁珠上有多个孔洞，用导线穿过可增加组件阻抗（穿过磁珠次数的平方），不过在高频时所增加的抑制噪声能力不可能如预期的多，而用多串联几个磁珠的办法会好些。

铁氧体是磁性材料，会因通过电流过大而产生磁饱和，导磁率急剧下降。

大电流滤波应采用结构上专门设计的磁珠，还要注意其散热措施。

铁氧体磁珠不仅可用于电源电路中滤除高频噪声（可用于直流和交流输出），还可广泛应用于其它电路，其体积可以做得很小。

特别是在数字电路中，由于脉冲信号含有频率很高的高次谐波，也是电路高频辐射的主要根源，所以可在这种场合发挥磁珠的作用。

铁氧体磁珠还广泛应用于信号电缆的噪声滤除。

PAM8301中文资料Key FeaturesApplications1.5W Output at 10%THD with a 8Loadand 5V Power SupplyFilterless,Low Quiescent Current and LowEMIHigh Efficiency up to 88%Superior Low Noise Short Circuit Protection Thermal ShutdownFew External Components to Save Spaceand CostTiny SOT23-6Package PMP/MP4GPSPortable Speakers Walkie TalkieHandsfree phones/Speaker Phones Cellular Phonesdirectly system cost It can optimize battery life thus is ideal for portable applications.Ωn n n n n nGeneral DescriptionThe PAM8301is a 1.5W class-D mono audio amplifier.Its low THD+N feature offers high-quality sound reproduction.The new filterless architecture allows the device to drive speaker instead of using low-pass output filters,therefore save and PCB area.With the same number of external components,the efficiency of the PAM8301is much better than that of class-AB cousins.The PAM8301is available in SOT23-6package.n n n n n n n n n Pb-Free PackageTypical ApplicationShutdownAudioBlock DiagramPin Configuration &Marking InformationTOP VIEW SOT23-6654123FPXYWFP:Product Code of PAM8301X:Internal Code Y:Year W:WeekINSD-OUT+OUT GNDVDDAbsolute Maximum RatingsThese are stress ratings only and functional operation is not implied Exposure to absolute maximum ratings for prolonged time periods may affect device reliability All voltages are with respect to ground ...Supply Voltage at no Input Signal...................6.6V Storage Temperature.....................-65to 150Soldering Temperature......................Input Voltage.............................-0.3V to V +0.3VMaximum Junction Temperature..................150°C °C °C 300°C,5secDD Recommended Operating ConditionsSupply voltage Range........................Operation Temperature Range........-40to 85Junction Temperature Range.........-40to 1252.5V to 5.5V Max.Supply Voltage (for Max.duration of30minutes)................................................6.0V°C °C °C °CThermal InformationElectrical CharacteristicV =5V,Gain =24dB,R =8T =25unless otherwise noted. DD L A Ω,，°CTypical Performance CharacteristicT =25°C,unless otherwise noted.A 3.Efficiency VS Output Power5.THD+N VS Output Power60%65%70%75%80%85%90%95%100%020040060080010001200Output Pow er(m W)E f f i c i e n c y000%20m350m 100m 200m500m 12W% 050100150200250300350020406080100120140T em p eratu reF r e q u e n c y (k H z )1.Frequency VS Supply Voltage2.Frequency VS Temperature 238 240242244246248250252 25425625823456Supply Voltage (V)F r e q u e n c y (k H z )4.Efficiency VS Output Power 6.THD+N VS Output Power20m350m 100m 200m500m 12W50%55%60%65%70%75%80%85%90%200400600800100012001400160018002000Output P ow er (m W)E f f i c i e n c yTypical Performance Characteristic T =25°C,unless otherwise noted.A 7.THD+N VS Frequency2020k501002005001k2k5k10kHz11.Frequency Response12.Noise Floord BV 2020k501002005001k 2k 5k 10k Hz %2020k501002005001k 2k 5k 10k Hz8.THD+N VS Frequency9.THD+N VS Frequency10.THD+N VS Frequency2020k501002005001k 2k 5k 10k Hz+++++++++d B r A2020k501002005001k 2k 5k 10k Hz%2020k501002005001k 2k 5k 10k HzTypical Performance CharacteristicT =25°C unless otherwise noted.A 13.PSRR14.EMI vs Frequency.-+0---------d B2010k501002005001k 2k 5k HzR =8L Ω,Gain=23dB,V =5V,Po=500DD mW Test Setup for Performance Testing1.The AP AUX-0025low pass filter is necessary for every class-D amplifier measurement with AP analyzer.2.Two 22μH inductors are used in series with load resistor to emulate the small speaker for efficiency measurement.PAM8301Demo BoardApplication InformationMaximum GainAs shown in block diagram (page 2),the PAM8301has two internal amplifier stages.The first stage's gain is externally configurable,while the second stage's is internally fixed.The closed-loop gain of the first stage is set by selecting the ratio of R to R while the second stage's gain is fixed at 2x.The output of amplifier 1serves as the input to amplifier 2,thus the two amplifiers produce signals identical in magnitude,but different in phase by 180°.Consequently,the differential gain for the IC isA =20*log [2*(R /R )]The PAM8301sets maximum R =80k ,minimum R =10k ,so the maximum closed-gain is 24dB.f i VD f i f i ΩΩInput Capacitors (Ci)Power Supply Decoupling (Cs)Shutdown OperationFor the best power on/off pop performance,the amplifier should be set in the shutdown mode prior to power on/off operation.Under Voltage Lock-out (UVLO)In typical application,an input capacitor,Ci,is required to allow the amplifier to bias input signals to a proper DC level for optimum operation.In this case,Ci and the minimum input impedance Ri (10k internal)form a high pass filter with a corner frequency determined by the following equation:It is important to choose the value of Ci as it directly affectslow frequency performance of the circuit,for example,when an application requires a flat bass response as low as 100Hz.Equation is reconfigured as follows:As the input resistance is variable,for the Ci value of 0.16F,one should actually choose the Ci within the range of 0.1F to 0.22 F.A further consideration for this capacitor is the leakage path from the input source through the input network (Ri,RF,Ci)to the load.This leakage current creates a DC offset voltage at the input to the amplifier that reduces useful headroom,especially in high gain application.For this reason,a low leakage tantalum or ceramiccapacitor is the best choice.When a polarized capacitor is used,the positive side of the capacitor should face the amplifier input in most applications as the DC level is held at VDD/2,which is likely higher than the source DC level.Please note that it is important to confirm the capacitor polarity in the application.The PAM8301is a high-performance CMOS audio amplifier that requires adequate power supply decoupling to ensure the output THD and PSRR as low as possible.Power supply decoupling affects low frequency response.Optimum decoupling is achieved by using two capacitors of different types that target different types of noise on the power supply leads.For higher frequency transients,spikes,or digital hash on the line,a good low equivalent-series-resistance (ESR)ceramic capacitor,typically 1.0μF is good,placing it as close as possible to the device VDD terminal.For filtering lower-frequency noise signals,a capacitor of 10μF orlarger,closely located to near the audio power amplifier is recommended.In order to reduce shutdown power consumption,the PAM8301contains shutdown circuitry for turnoff the amplifier.This shutdown feature turns the amplifier off when a logic low is applied on the SHDOWN pin.By switching the shutdown pin over to GND,the PAM8301supply current draw will be minimized in idle mode.The PAM8301incorporates circuitry to detect low on or off voltage.When the supply voltage drops to 2.1V or below,the PAM8301goes into a state of shutdown,and the device comes out of its shutdown state and starts to normal operation by reset the power supply or pin.μμμSD ()C 1f 2RiCi p =()i c 1Ci 2R f p =How to Reduce EMI (Electro Magnetic Interference)A simple solution is to put an additional capacitor 1000F at power supply terminal for power line coupling if the traces from amplifier to speakers are short (<20cm).Most applications require a ferrite bead filter as shown at Figure 1.The ferrite filter depresses EMI of around 1MHz and higher.When selecting a ferrite bead,choose one with high impedance at high frequencies and low impedance at low frequencies.Figure 1:Ferrite Bead Filter to Reduce EMIμOrdering InformationPAM8301Pin ConfigurationNumber of pins Pin TypeSOT23-6Outline DimensionsGAUGE PLANE SEATING PLANE PLANTINGBASE SECTION A-ASEE VIEWSUnit:Millimeter。