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SMT 零件認識一、零件名稱說明：零 件 簡 稱全 名中 文 名 稱C Capacitor電容CNW Capacitor Network排容TAN CAP Tantalum Capacitor鉭質電容Vari CAP Variable Capacitor可變電容Trim CAP Trimmer Capacitor可變電容ALC Aluminum Electrolytic Capacitor鋁質電容（電解電容）C PL／MT film Capacitor Plastic／Metal film塑膠／金屬薄膜電容R Resistor（厚／薄膜）電阻RNW Resistor Network 排阻R Melf Resistor Melf圓柱形電阻／繞線電阻VR Variable Resistor可變電阻R Therm Thermal Resistor熱敏電阻FB Ferrite Bead鐵粉電感FBNW Ferrite Bead Network排列電感Inductor／Coil Inductor／Coil積層／線圈電感Transformer Transformer變壓器Magnetic Magnetic core磁粉鐵心IC Integrated Circuit積體電路SOIC／SOP Small Outline Package縮小型 ICSSOP Shrink Small Outline Package外形縮小包裝 ICTSOP Thin Small Outline Package超薄縮小包裝 ICTSSOP Thin Shrink Small Outline Package超薄且外形縮小包裝 ICSOJ Small Outline J Leads PackageＪ形腳 ICPLCC Plastic leaded Chip Carrier塑膠無引線晶片承載器QFP Quad Flat Package四方平面微細間距包裝TQFP Thin Quad Flat Package薄形 QFPTR Transistor電晶體DI（D）Diode二極體SOT Small Outline Transistor縮小型電晶體Melf Diode Melf（Cylindrical）Diode圓柱形二極體LED發光二極體OSC Oscillator振盪器（有外加電源)X′tal Crystal石英振盪器（無外加電源）VCO Voltage Control Oscillator電壓控制振盪器Resonator Resonator振盪元件SW Switch開關CN Connector連接器BGA Ball Grid Array格狀錫珠（球形陣列包裝）PBGA Plastic Ball Grid Array塑膠 BGACBGA Ceramic Ball Grid Array陶瓷 BGAμBGA Micro BGA微小形 BGA（0.8mm Pitch 以下）CSP Chip Scale ( Size ) Package微小形 BGA（0.8mm Pitch 以下）Fuse Fuse保險絲Filter Filter瀘波器LCF L／C Filter電感電容組合瀘波器Socket Socket IC 插座MPTR Mini Power Transistor迷你功率電晶體CPTR Compact Power Transistor功率電晶體PTR Power Transistor大型功率電晶體RF Radio Frequency高頻Odd shape異形零件TAB Tape Automated Bonding Package帶式承載包裝TCP Tape Carrier Package帶式承載包裝FC Flip Chip覆晶 ( 封裝方式 )COB Chip On BoardLCD Liquid Crystal Display液晶顯示器。
磁珠(Ferrite Bead)什么是磁珠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。
以常用于电源滤波的HH-1H3216-500为例，其型号各字段含义依次为：HH 是其一个系列，主要用于电源滤波，用于信号线是HB系列；1 表示一个组件封装了一个磁珠，若为4则是并排封装四个的；H 表示组成物质，H、C、M为中频应用（50－200MHz），T低频应用（50MHz），S高频应用（200MHz）；3216 封装尺寸，长3.2mm，宽1.6mm，即1206封装；500 阻抗（一般为100MHz时），50 ohm。
Ferrite & 電感常用術語鐵氧體磁芯Ferrite Core鐵氧磁體是一種磁性材料，由鐵及其他元素的氧化物所構成的晶體結構。
這種晶體結構是在高溫及特定的方式、時間下將鐵氧磁體材料燒結而得，其一般的組成為xxFe2O4，其中xx 代表一種或好幾種金屬，最為常見的金屬組合為錳鋅(MnZn) 及鎳鋅(NiZn)，這些金屬都很容易被磁化。
初導磁率Initial Permeability （μi）磁芯的導磁率是指令磁芯具有集中磁通線的能力的特性。
磁芯的材質及磁芯的形狀會影響磁芯的…有效導磁率‟。
對一個已知的磁芯形狀、尺寸及材質和特定的繞組，具較高導磁率的磁性材質與較低導磁率的材質比較起來，會有較高的電感值。
飽和磁束密度（Bm or Bs）：單位Gauss或mT磁化到飽和狀態的磁通密度。
工作頻率範圍殘留磁束密度（Br）：單位Gauss或mT從飽和狀態去除磁場後，剩餘的磁通密度。
保磁力（HC）：單位Oe從飽和狀態去除磁場後，磁芯繼續被反向磁場磁化，直至磁通密度減為零，此時的磁場強度稱為保磁力。
損失係數Loss Factor（Tanδ/μi）溫度係數（αμγ）居里溫度Curie Temperature鐵氧體磁芯失去磁性的溫度。
當溫度接近居里溫度時，磁芯的導磁率劇急上升，引起電感量增加。
但是到了居里溫度，導磁率下降到接近1，導致電感量急遽下降。
居里點是指導磁率下降到室溫導磁率的10% 的溫度。
電感量Inductance此電路元件的特性，能抑制流經元件之電流的改變。
電感之電感量會受磁芯之材質、磁芯之形狀及尺寸、繞線的圈數及線圈的形狀所影響。
電感器的電感量通常用微享（μH）來表示。
電感值的單位換算如下：1 henry (H) = 10 6 μH1 millihenry (mH) = 10 3μH1 microhenry (μH) = 1 μH1 nanohenry (nH) = 10 -3 μH磁芯損耗Core Losses磁芯損耗是由於磁芯材料中的交變磁場引起的。
Dimensions: [mm]detail AAScale - 1:1Cautions and Warnings:The following conditions apply to all goods within the product series of WE-FSFS ofWürth Elektronik eiSos GmbH & Co. KG:General:•This electronic component is designed and manufactured for use in general electronic equipment.•Würth Elektronik must be asked for written approval (following the PPAP procedure) before incorporating the components into any equipment in fields such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network, etc. where higher safety and reliability are especially required and/or if there is the possibility of direct damage or human injury.Electronic components that will be used in safety-critical or high-reliability applications, should be pre-evaluated by the customer.•The component is designed and manufactured to be used within the datasheet specified values. If the usage and operation conditions specified in the datasheet are not met, the wire insulation may be damaged or dissolved.•Do not drop or impact the component, the component may be damaged•Würth Elektronik products are qualified according to international standards, which are listed in each product reliability report. Würth Elektronik does not warrant any customer qualified product characteristics beyond Würth Elektroniks’ specifications, for its validity and sustainability over time.•The responsibility for the applicability of the customer specific products and use in a particular customer design is always within the authority of the customer. All technical specifications for standard products also apply to customer specific products.Product specific:•Cleaning and Washing:•Washing agents used during the production to clean the customer application might damage or change the characteristics of the component, marking or plating. Washing agents may have a negative effect on the long-term functionality of the product. Potting:•If the product is potted in the customer application, the potting material might shrink or expand during and after hardening. Shrinking could lead to an incomplete seal, allowing contaminants into the component. Expansion could damage the component. We recommenda manual inspection after potting to avoid these effects.Storage Conditions:• A storage of Würth Elektronik products for longer than 12 months is not recommended. Within other effects, the terminals may suffer degradation, resulting in bad solderability. Therefore, all products shall be used within the period of 12 months based on the day of shipment.•Do not expose the components to direct sunlight.•The storage conditions in the original packaging are defined according to DIN EN 61760-2.•The storage conditions stated in the original packaging apply to the storage time and not to the transportation time of the components. Packaging:•The packaging specifications apply only to purchase orders comprising whole packaging units. If the ordered quantity exceeds or is lower than the specified packaging unit, packaging in accordance with the packaging specifications cannot be ensured. Handling:•Care must be taken when cutting, bending or pulling the products, as small particles may come off and cracks can be created. •For optimum adhesion properties surface must be clean and dry.•This product is classified as laminate or compound material, as these small non-conductive particles can be released during mechanical stress or handling. Wherever special cleanness or particle contamination requirements are given, please contact Wurth Elektronik technical department during the design in status. In applications where the danger of subsequent damages due to particlecontamination is given, preventive measures must be implemented by the customer.•The temperature rise of the component must be taken into consideration. The operating temperature is comprised of ambient temperature and temperature rise of the component.The operating temperature of the component shall not exceed the maximum temperature specified.These cautions and warnings 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.Würth Elektronik eiSos GmbH & Co. KGEMC & Inductive SolutionsMax-Eyth-Str. 174638 WaldenburgGermanyCHECKED REVISION DATE (YYYY-MM-DD)GENERAL TOLERANCE PROJECTIONMETHODJoV001.0022021-11-23DIN ISO 2768-1mDESCRIPTIONWE-FSFS Flexible Sintered FerriteSheet ORDER CODE374006BUSINESS UNIT STATUS PAGEImportant NotesThe following conditions apply to all goods within the product range of Würth Elektronik eiSos GmbH & Co. KG: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 areas, serve as general guidance and cannot be estimated as binding statements about the suitability for a customer application. The responsibility 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 cannot 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. 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The basic responsibility of the customer as per Section 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 standard 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 expectancy 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. 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KGEMC & Inductive SolutionsMax-Eyth-Str. 174638 WaldenburgGermanyCHECKED REVISION DATE (YYYY-MM-DD)GENERAL TOLERANCE PROJECTIONMETHODJoV001.0022021-11-23DIN ISO 2768-1mDESCRIPTIONWE-FSFS Flexible Sintered FerriteSheet ORDER CODE374006BUSINESS UNIT STATUS PAGE。
