DESCRIPTIONThe PS2915-1 is an optically coupled isolator containing a GaAs light emitting diode and an NPN silicon phototransistor in one package for high density mounting applications. An ultra small flat lead package has been provided which realizes a reduction in mounting area of about 30% compared with the PS28XX series.FEATURES• ULTRA SMALL FLAT-LEAD PACKAGE: 4.6 (L) x 2.5 (W) x 2.1 (H) mm• HIGH CURRENT TRANSFER RATIO:CTR = 200% TYP @ I F = ±1 mA, V CE = 5 V • HIGH ISOLATION VOLTAGE BV: 2500 V r.m.s.• TAPE AND REEL AVAILABLE: PS2915-F3, F4: 3500 pcs/reelPART NUMBER PS2915-1 SYMBOLSPARAMETERSUNITS MIN TYP MAXV F Forward Voltage, I F = ±1 mAV 0.9 1.1 1.3C T Terminal Capacitance, V = 0, f = 1.0 MHzpF 30 I CEO Collector to Emitter Dark Current, I F = 0 mA, V CE = 40 V nA 100CTR Current Transfer Ratio (I C /I F )1, I F = ±1 mA, V CE = 5 V % 100 200 400 V CE(sat) Collector Saturation Voltage, I F = ±1 mA, I C = 0.2 mA V 0.13 0.3 R I-O Isolation Resistance , V I-O = 1.0 kV DC Ω 1011 C I-O Isolation Capacitance, V = 0 V, f = 1.0 MHz pF 0.4 t r Rise Time 2, V CC = 5 V, I C = 2 mA, R L = 1 k Ω µs 5 t f Fall Time 2, V CC = 5 V, I C = 2 mA, R L = 1 k Ω µs 10 t on On Time, V CC = 5 V, I F = ±1 mA, R L = 5 k Ω µs 40 t s Storage Time 2, V CC = 5 V, I F = ±1 mA, R L = 5 k Ω µs 10 t offOff Time 2, V CC = 5 V, I F = ±1 mA, R L = 5 k Ωµs120ELECTRICAL CHARACTERISTICS (T A = 25°C)Notes:1. CTR RANK: N: 100 to 400 (%)2. Test Circuit for Switching TimeT r a n s i s t o r D i o d e C o u p l e d APPLICATIONS• DC/DC CONVERTER • MODEM/PC CARDPS2915-143Date Published: August 4, 2005元器件交易网SYMBOLS PARAMETERS UNITS RATINGS Diode I F Forward Current mA ±50 ∆I F /˚C Forward Current Derating mW/°C0.5 I F (Peak) Peak Forward Current 2 A ±0.5 P D Power Dissipation mW 60 TransistorV CEOCollector to Emitter Voltage V 40 V ECO Emitter to Collector Voltage V 5 I C Collector CurrentmA 40∆P C /˚C Power Dissipation Derating mW/˚C 1.2 P C Power Dissipation mW120Coupled BV Isolation Voltage 3 V r.m.s. 2500 P T Total Power Dissipation mW 160 T A Operating Ambient Temp. °C -55 to +100 T STG Storage Temperature°C-55 to +150ABSOLUTE MAXIMUM RATINGS 1 (T A= 25°C)Notes:1. Operation in excess of any one of these parameters may result in permanent damage.2. PW = 100 µs, Duty Cycle = 1%.3. AC voltage for 1 minute at T A = 25 °C, RH = 60 % between input and output.OUTLINE DIMENSIONS (Units in mm)OPTOCOUPLER CONSTRUCTIONPARAMETER UNITS (MIN)Air Distance 4 mm Creepage Distance 4 mmIsolation Distance0.4 mmMARKING1. Anode, Cathode2. Cathode, Anode3. Emitter4. CollectorTOP VIEWN15111–Last number of Type No: 15–An initial of "NEC"–Assembly lot No. 1 pin mark (nicked corner)111Week assembled Year assembledPART NUMBER PACKING STYLEPS2915-1-F3 Embossed Tape 3500 pcs/reelPS2915-1-F4ORDERING INFORMATION (Solder Contains Lead)RECOMMENDED MOUNT P AD DIMENSIONS (Units in mm)CAUTIONS REGARDING NOISE:Be aware that when voltage is applied suddenly between the optocoupler's input and outout or between collector-emitters at startup, the output side may enter the on state, even if the voltage is within the absolute maximum ratings.PART NUMBER PACKING STYLEPS2915-1-F3-A Embossed Tape 3500 pcs/reelPS2915-1-F4-AORDERING INFORMATION (Pb-Free)TYPICAL CHARACTERISTICS (T A = 25°C, unless otherwise specified)M a x i m u m F o r w a r d C u r r e n t , I F (m A )Ambient Temperature, T A (°C)Ambient Temperature, T A (°C)T r a n s i s t o r P o w e r D i s s i p a t i o n , P C (m W )Forward Voltage, V F (V)F o r w a r d C u r r e n t , I F (m A )C o l l e c t o r C u r r e n t , I C (m A )Collector to Emitter Voltage, V CE (V)Collector Saturation Voltage, V CE(sat) (V)C o l l e c t o r C u r r e n t , I C (m A )Ambient Temperature, T A (°C)C E O MAXIMUM FORWARD CURRENT TRANSISTOR POWER DISSIPATIONFORWARD CURRENTvs.COLLECTOR CURRENT vs.COLLECTOR TO EMITTER DARK CURRENTCOLLECTOR CURRENT vs.TYPICAL CHARACTERISTICS (T A= 25°C, unless otherwise specified)Time (Hr)C T R (r e l a t i v e V a l u e )Load Resistance, R L (Ω)S w i t c h i n g T i m e , t (µs )N o r m a l i z e d G a i n , G VFrequency, f (kHz)Forward Current, I F (mA)C u r r e n t T r a n s f e r R a t i o , C T R (%)Ambient Temperature, T A (°C)N o r m a l i z e d C u r r e n t T r a n s f e r R a t i o , C T RNORMALIZED CURRENT TRANSFER RATIOSWITCHING TIME FREQUENCY RESPONSERemark: The graphs indicate nominal characteristics.TAPING SPECIFICATIONS (Units in mm)Tape Outline and DimensionsTape DirectionReel Outline and DimensionsflangeN N N NN N N NPS2915-1-F3PS2915-1-F4Life Support ApplicationsThese NEC products are not intended for use in life support devices, appliances, or systems where the malfunction of these products can reasonably be expected to result in personal injury. The customers of CEL using or selling these products for use in such applications do so at their own risk and agree to fully indemnify CEL for all damages resulting from such improper use or sale.Recommended Soldering Conditions(1) Infrared reflow soldering • Peak reflow temperature 260 ˚C or below (package surface temperature) • Time of peak reflow temperature 10 seconds or less • Time of temperature higher than 220 ˚C 60 seconds or less • Time to preheat temperature from 120 to 180°C 120±30 s • Number of reflows Three• Flux Rosin flux containing small amount of chlorine (The flux with a maximum chlorine content of 0.2 Wt % isrecommended).(2) Wave soldering • Temperature 260 ˚C or below (molten solder temperature) • Time10 seconds or less• Preheating conditions 120°C or below (package surface temperature)• Number of times One (Allowed to be dipped in solder including plastic mold portion.) • Flux Rosin flux containing small amount of chlorine (The fluxwith a maximum chlorine content of 0.2 Wt % is recommended).(3) Cautions • Fluxes Avoid removing the residual flux with chlorine-based cleaning solvent after a reflow process.USAGE CAUTIONS1. Protect against static electricity when handling.2. Avoid storage at a high temperature and high humidity.Recommended Temperature Profile of Infrared ReflowA Business Partner of NEC Compound Semiconductor Devices, Ltd.4590 Patrick Henry Drive Santa Clara, CA 95054-1817Telephone: (408)919-2500Facsimile:(408) 988-0279Subject:Compliance with EU DirectivesCEL certifies, to its knowledge, that semiconductor and laser products detailed below are compliant with the requirements of European Union (EU) Directive 2002/95/EC Restriction on Use of Hazardous Substances in electrical and electronic equipment (RoHS) and the requirements of EU Directive 2003/11/EC Restriction on Penta and Octa BDE.CEL Pb-free products have the same base part number with a suffix added. The suffix –A indicates that the device is Pb-free. The –AZ suffix is used to designate devices containing Pb which areexempted from the requirement of RoHS directive (*). In all cases the devices have Pb-free terminals. All devices with these suffixes meet the requirements of the RoHS directive.This status is based on CEL’s understanding of the EU Directives and knowledge of the materials that go into its products as of the date of disclosure of this information.Restricted Substanceper RoHS Concentration Limit per RoHS (values are not yet fixed)Concentration containedin CEL devices -A-AZ Lead (Pb)< 1000 PPM Not Detected(*)Mercury < 1000 PPM Not Detected Cadmium< 100 PPM Not Detected Hexavalent Chromium < 1000 PPM Not Detected PBB < 1000 PPM Not Detected PBDE< 1000 PPMNot DetectedIf you should have any additional questions regarding our devices and compliance to environmental standards, please do not hesitate to contact your local representative.Important Information and Disclaimer: Information provided by CEL on its website or in other communications concerting the substancecontent of its products represents knowledge and belief as of the date that it is provided. CEL bases its knowledge and belief on information provided by third parties and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. CEL has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. CEL and CEL suppliers consider certain information to be proprietary,and thus CAS numbers and other limited information may not be available for release.In no event shall CEL’s liability arising out of such information exceed the total purchase price of the CEL part(s) at issue sold by CEL to customer on an annual basis.See CEL Terms and Conditions for additional clarification of warranties and liability.元器件交易网。
欧姆龙PLCST语⾔学习ST语⾔ST语⾔（Structured Text）结构化⽂本。
是针对⾃动化系统的⼀种⾼级⽂本编程语⾔，语法类似于：Basic、PASCAL或C。
主要优点是：简化复杂的数学⽅程。
特点：结构化⽂本有以下特点:1)⾼级⽂本编程语⾔2)结构化的编程3)简单的标准结构4)快速⾼效的编程5)使⽤直观灵活6)与PASCAL类似7)有计算机编程经验的⼈可以很容易地使⽤它8)符合IEC61131 -3 标准系统要求：CX-Programmer 5.0 版（和以后的版本）硬件要求：CS/CJ- 系列CS1-H、CJ1-H 和CJ1M CJ2M CPU 单元--3.0 版或以后的版本. 以及CP1H和CP1L系列。
运动控制器FQM1.⼀、变量的⽤法和属性1)内部：在实例中只能使⽤内部变量。
这些内部变量不能直接⽤来传输数据⾄I/O 参数或从I/O 参数中上传数据。
2)输⼊：输⼊变量可以从实例外的输⼊参数中输⼊数据。
默认输⼊变量为传输输⼊条件数据的EN （Enable）变量。
3)输出：输出变量可以输出数据⾄实例外的输出参数。
默认输出变量为传输实例执⾏状态的ENO （Enable Out）变量。
4)外部：外部变量是事先由CX-Programmer 寄存的系统定义变量（例如，条件标志和⼀些辅助区域位）或⽤户定义的全局符号（⽤于每个实例数中）。
变量的⽤法：AT设置（分配实际的地址）将变量设于特殊的I/O 存储地址中⽽⾮系统⾃动分配地址。
在这此属性中，⽤户可输⼊所需的I/O 存储地址以规定特殊地址。
该属性仅为内部变量⽽设。
即使设置了具体的地址，变量名还是必须⽤于算法中。
⼆、ST语⾔语法介绍：1)ST语⾔基础表达式：操作数+操作符操作数可以是变量、常量、函数或其他表达式。
表达式变量的数据类型要求⼀致。
操作符的优先级：函数表：2)布尔逻辑操作3)条件语句1. 简单格式If 逻辑表达式then 语句1 End_if；例：2. 分⽀格式If 逻辑表达式then 语句1Else语句2End_if；例：3. 多重格式If 逻辑表达式1 then 语句1；Elseif 逻辑表达式2 then 语句2；Elseif 逻辑表达式3 then 语句3；…Elseif 逻辑表达式n then 语句n；Else 语句m；End_if；例：4. 嵌套的if语句嵌套对于依赖其它条件的条件测试很有⽤处。
S1U-3X1U 19 inch Power Shelf for D1U Power Supplies
CPS_S1U-3X.D02 www.murata-ps.com
www.murata-ps.com/supportFor full details go towww.murata-ps.com/rohs
FEATURESnRoHS compliantn1U height, 18.3” width, 16” depth powershelfnHolds 3 D1U series power suppliesnHot insertion / removalnBlind-docking connectionnLug DC output connection for 2 AWG cablesnI2
C interface
nSignal connectornOptional shelf to shelf signal connector (up to 2 shelves in parallel)
DESCRIPTIONThe S1U-X3 is a 1U x 19” EIA Rack Mount Power Shelf designed for holding three 12V or 48V D1U Front End Power Supplies in current sharing applications. It is intended for distributed power architecture applications in the Servers, Storage Networking and Data Communications markets. There are two lug terminal connections for #2 AWG cabling for the DC output. System connection through the I2C bus reports the performance status of the power supplies within the power shelf. Two Power Shelves can operate in parallel by an optional Shelf-to-Shelf cable, doubling the power output to the maximum capability of 9.6kW for two 12V power shelves or 12kW for two 48V power shelves.
