【应用】TVS P4SMA12CA应用于智能家居报警主机电源端口，浪涌差模达±1KV、ESD空气放电达15KV/-8KV

时间： 2020-06-29 来源：世强

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Littlefuse 的P4SMA系列瞬态抑制二极管是专门用于保护敏感电子设备，使其免受雷击和其他瞬态事件引起的瞬态电压侵害。本文主要介绍了Littlefuse P4SMA12CA在智能家居报警主机产品电源端口上的应用，解决了产品的ESD和浪涌问题。

TVS瞬态抑制二极管的选型指南如下：

1)首先，要确定被保护电路中的最大直流电流或连续工作电压，电路的额定标准电压和“高端”容限；

2) TVS管的额定瞬态功率要大于电路中可能出现的最大瞬态浪涌功率；

3)TVS管的截止电压要大于被保护电路的最高工作电压；

4) TVS管的最大钳位电压要小于后级被保护电路中的损坏电压，特别要注意芯片的最大输入电压；

5) 确定好TVS管最大箝位电压后，其峰值脉冲电流要大于瞬态浪涌电流；

6) 对于数据接口的电路保护，还需注意选取具有合适电容的TVS二极管。比如：当信号频率或传输速率较高时，应选用低电容系列的TVS管。

智能家居报警主机的输入电源为9V的直流电源适配器，最大工作电流为2A，后端芯片的最大输入电压为22V。P4SMA12CA的截止电压为10.2V；最大钳位电压为16.7V；击穿电压在测试电流为1mA时，最小值为11.4V，最大值为12.6V；最大峰值脉冲电流为24.6A；漏电流为5uA。因此，P4SMA12CA满足选型要求。该产品需要支持端子连接和电源Jack连接，因此PCB板上需要给每个电源端子都放一颗TVS管。原理图设计如图1所示：

图1 电源端子原理图设计

在TVS管进行PCB布局布线时，一定要将TVS管靠近接口放置，走线粗而短，先过TVS管，再进芯片或者其他元器件。如图2所示，电源信号经过电源端子，然后经过TVS管，然后给系统供电。

图2 PCB设计

经过测试，该电源端子surge能过差模正负1KV，ESD空气放电最高能过15KV，-8KV，接触放电能过正负6KV，满足系统设计需求。该产品已经大批量生产出售。Littlefuse 的TVS瞬态抑制二极管起到了很好的浪涌和ESD保护作用。

P4SMA系列瞬态抑制二极管功能与特色如下：表面贴装可优化面板空间；小尺寸封装；内置式应力消除；玻璃钝化结；低电感；无卤素，且符合ROHS标准；出色的箝位能力；重复频率（工作循环）0.01%；快速的响应时间从0伏特至V_BR的单向最小值通常小于1.0p；标准IR小于1μA，高于10V；高温焊接，接线端250°C./10秒。

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型号- P4SMA16A,SMAJ6.0CA,1.5SMB39CA,SMAJ40CA,SMA6J78CA,1KSMB110A,SMBJ8.5CA,SMBJ51A,SMBJ45CA-SA-GT3,SMBJ75A,P6SMB56A,SMAJ60CA-N,SMBJ100CA-N,SMBJ8.0A-23-TR70,SMAJ48CA-23-TR70,SMBJ12CA-SA-GT3,SMAJ120A,SMAJ110CA,SMAJ51CA,SMBJ400A-37,P6SMB30A,SMBJ5.0A-012,P6SMB62CA,SMAJ250A,P4SMA,SMAJ350CA,P4SMA530CA,P4SMA8.2CA,SMAJ13CA-23-RG70,SMAJ64CA,1KSMB7.6A,P4SMA18A,SMA6J54CA,1KSMB8.2CA,SMA6J7.0A,SMAJ8.0A,P4SMA16CA,SMBJ8.5CA-KF,P6SMB100A,SMBJ48CA-23-TR70,SMBJ300A,SMBJ150CA,P4SMA91CA,SMAJ70A,SMBJ6.0CA-SA-GT3,SMAJ75CA,P6SMB400CA,SMA6J43CA,1KSMB9.1A,SMBJ15CA-KF,SMA6J40A,SMBJ16CA,SMA6J64A,SMBJ6.0CA-37,P4SMA27CA,P6SMB170CA,SMBJ120A-23-TR70,SMAJ10CA-23-TR70,SMBJ33A-T7,SMA6J45A,SMBJ7.5CA-23-TR70,P6SMB75A,P6SMB51A,1KSMB160CA,SMA6J5.0A,P6SMB75CA,SMBJ170CA,SMA6J22A,SMBJ16A-23-TR70,P6SMB9.1CA,SMAJ100A,1KSMB27A,1KSMB7.5A,P4SMA300A,SMAJ30A-N,P6SMB250A,SMAJ5.0A-23-TR70,SACB7.0,P4SMA160CA,1KSMB130A,P6SMB7.5CA,SMA6J43A,P4SMA82CA,SMAJ7.0CA-23-RG70,SMAJ18A-23-RG70,SMAJ150A-L,SMBJ400CA,SMBJ36A-GT3,P6SMB120A,SMA6J10CA,P6SMB51CA,SMBJ7.5CA-SA-GT3R,P4SMA18CA,P6SMB6.8A,P4SMA540A,P6SMB300CA,SMAJ90A,SMBJ14CA,SMBJ70A,SMA6J45CA,P6SMB8.2A,SMA6J20A,SMAJ7.0CA,SMBJ48A-23-RG70,SMAJ8.5A,1KSMB30CA,P4SMA550CA,P4SMA56A,P6SMB,SMBJ33CA-MN,P6SMB540CA,SMA6J36CA,SMAJ18CA-23-TR70,P6SMB16A,P6SMB300A,1KSMB22A,SMBJ130CA,1KSMB62CA-N,1.5SMB39A,1KSMB43CA,SMAJ18CA,SMBJ45CA-SA-GT3R,P4SMA33A,SMAJ28A-23-TR70,SMBJ36CA,P4SMA170A,SMBJ5.0A-23-TR70,P6SMB39A,P6SMB15A,SMAJ250CA,1KSMB150A,P6SMA440CA-L,1KSMB47A,SMBJ7.5CA-GT3,SMBJ15CA-ER,P4SMA10A,P6SMB27CA,SMAJ60CA,SMA6J7.5CA,SMA6J58CA,P6SMB91CA,SMA6J12CA,P6SMB200CA,P4SMA12CA,P4SMA480CA,1KSMB24A,P6SMB16CA,P4SMA11A,SMBJ14CA-23-TR70,SMBJ90A,SMBJ12CA,SMBJ58CA,P6SMB13A,SMBJ17CA-23-TR70,SMBJ36A-23-RG70,SMAJ130CA,SMBJ350CA,SMBJ100A-ER,SMBJ5.0A,P4SMA12A,P4SMA36A,P6SMB75A-N,SMA6J85A,P6SMB36A,SMAJ16CA,P6SMB12A,P4SMA36CA,SMAJ5.0CA,SMBJ11CA-54,P6SMA440A-IE,P4SMA13A,SMAJ14A-,P6SMB10A,1KSMB170A,P4SMA47CA,P6SMB11A,SMAJ150CA,1KSMB56CA,P4SMA250A-SF,1KSMB10CA,1KSMB43A,P6SMB100CA,SMAJ8.0CA-23-TR70,SMBJ45CA,P6SMB58A,1KSMB180CA,SMA6J8.5CA,SMBJ170A,SMA6J14CA,SMBJ10CA,P6SMB540A,1KSMB68A,SMBJ6.0CA-23-RG70,SMBJ58A-ER,1KSMB20A,P6SMB18CA,P4SMA15A,SMAJ300A,SMAJ36CA-LC,P4SMA39A,SMAJ150A-23-RG70,SMA6J60A,SMBJ250CA,P6SMB82CA,P6SMB33A,P6SMB400A-102,P4SMA20CA-54,SMAJ6.5CA-23-TR70,P6SMB440CA,1KSMB7.6CA,1KSMB6.8CA,SMAJ36CA-54T7,1KSMB18CA-DH,SMBJ5.0CA,P6SMB47CA,1.5SMB43A,SMBJ220CA,P4SMA480A,SMAJ200CA-54T7,SMAJ14A-23-TR70,P6SMB220CA,SMBJ48A-SA-GT3,SMAJ16A,1KSMB24CA,1KSMB62A,P4SMA130A,P6SMB36CA,SMBJ78CA,SMA6J18CA,1.5SMB20CA,SMAJ48CA,SMBJ43CA,SMBJ170A-SA-GT3R,SMBJ5.0CA-KF,SMAJ17A,SMBJ440CA-23-RG70,SMAJ7.5CA,SMAJ22A-23-TR70,SMAJ13CA-23-TR70,SMBJ45CA-23-TR70,P4SMA110CA,1KSMB110CA,SMBJ9.0A-23-TR70,SMBJ33CA-0028,SMBJ7.0A,SMAJ400A,SMA6J16CA,1.5SMB100CA,SMBJ54CA,SMAJ15CA,SMBJ18A,SMAJ14A,SMBJ150A,SMAJ90CA,SMAJ24A-N,P6SMB12CA,P6SMB58CA,1.5SMB20A,SMAJ300CA,SMAJ15A-54T7,P6SMB440A-101,P4SMA30CA,SMAJ26CA,SMBJ100CA,1.5SMB68A,SMA6J7.0CA,SMAJ15A,1KSMB13CA,1KSMB,SMA6J100A,P6SMB120CA,1.5SMB23A,SMBJ26A-23-TR70,MSMBJSAC5.0,1KSMB82A,1.5SMB33CA,SMBJ16A,SMBJ30CA,1.5SMB47A,SMAJ36A,SMAJ12A,P4SMA51A,P4SMA75A,1.5SMB22A,SMA6J90A,SMAJ8.5CA,SMBJ10A-23-TR70,SMAJ180A,P4SMA150A,SMBJ440CA,1.5SMB68CA,1.5SMB22CA,P4SMA43CA,SMBJ17A,SMAJ15CA-23-TR70,SMAJ13A,SMBJ120CA,SMBJ70CA-ER,SMAJ18A-23-TR70,SMBJ18CA-23-TR70,SMBJ14A,SMBJ5.0CA-23-TR70,P6SMB18A,SMAJ13CA,P4SMA10CA,SMAJ100CA-23-TR70,P4SMA56CA,SMAJ7.0A-23-TR70,SMAJ15A-23-TR70,SMBJ28CA-ER,SMAJ58A,SMBJ130A,SMAJ10A,SMA6J60CA,1KSMB15CA,SMBJ7.5A,SMBJ7.0CA-23-TR70,SMA6J8.0CA,SMBJ15A,SMAJ24CA,SMAJ400CA,SMAJ170CA,1.5SMB24A,P6SMB440CA-L,SMAJ11A,P4SMA30A,P4SMA440A,SMA6J120A,SMA6J51CA,SMBJ9.0A,SMBJ6.0A-54,SMA6J6.0CA,SMBJ58CA-37,SMBJ12A,SMBJ16CA-23-RG70,SMAJ200CA,SMAJ8.5CA-23-TR70,SMBJ36A,P6SMB150A,SMBJ24CA-23-TR70,SMAJ6.0A,SMAJ33CA,SMBJ6.0CA-SA-GT3R,SMBJ350A,1.5SMB82A,SMBJ6.5CA,P4SMA550A,SMA6J26A,SMA6J40CA,1KSMB39CA,P6SMB82A,1.5SMB24CA,SMAJ160A,SMBJ13A,SMBJ85CA,SACB5.0,P6SMB43CA,1KSMB150CA,SMAJ33CA-54T7,SMAJ33A,P4SMA220A,SMBJ6.0A-23-TR70,SMAJ40CA-23-TR70,SMBJ58A,SMBJ22CA-23-TR70,SMAJ85A-L,SMAJ11CA,SMBJ110A,P6SMB30CA,SMBJ220A-L,SMBJ75CA-23-TR70,SMAJ78A,SMBJ300CA,SMAJ54A,SMAJ30A,SMA6J24A,SMBJ5.0A-54,SMA6J48A,SMBJ11CA-SA-GT3R,SMBJ10A,SMBJ36A-23-TR70,SMA6J8.5A,P6SMB8V2CA,SMAJ440CA,SMBJ11A,P6SMB480CA,SMAJ36CA-23-TR70,HTVSB7.0CA-100,SMAJ22CA,SMBJ220A,SMAJ75A,SMBJ51CA-23-TR70,SMAJ51A,SMBJ33A-014,SMAJ100CA,P4SMA510CA,P4SMA9.1A,SMBJ7.5CA,SMA6J5.0CA,P4SMA91A,P6SMB10CA,P6SMB170A,SMBJ12CA-N,P4SMA110A,1.5SMB62A,SMAJ188A,SMA6J6.5A,SMBJ33A,SMAJ6.5A,SMBJ440A,SMA6J75CA,SMAJ20CA,SMAJ6.0CA-23-TR70,SMAJ6.5CA,SMBJ200CA,SMBJ78A,P4SMA7.5A,SMAJ28A-37,P4SMA350A,SMAJ150A-23-TR70,P6SMB56CA,SMA6J64CA,SMA6J28A,SMBJ30A,SMBJ54A,P4SMA6.8CA,SMA6J8.0A,P4SMA180CA,1KSMB130CA,SMBJ200A,SMBJ5.0CA-MD,P6SMB15CA-HW,P6SMB400A-SCH,SMBJ,P4SMA400A,1KSMB18A,P4SMA9.1CA,P6SMB160CA,P6SMB43A,P4SMA15CA,P6SMB68A,SMBJ20CA-SA-GT3,SMBJ70CA,SMBJ170A-SA-GT3,P6SMB110A,P4SMA170CA,SMBJ24A-37,1KSMB9.1CA,SMBJ6.5A-37,P4SMA7.5CA,SMAJ7.5A,1KSMB62CA,SMA6J54A,SMAJ350A,SMA6J78A,SMBJ13A-C,SMAJ60A,SMAJ,P4SMA510A,SMAJ12CA-23-TR70,SMBJ17CA,SMBJ40A,P

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LITTELFUSE P4SMA系列瞬态抑制二极管选型表

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产品型号	品类	厂牌	Reverse Stand off Voltage Vʀ (Volts)	Breakdown Voltage Vʙʀ (Volts) @ Iᴛ MIN	Breakdown Voltage Vʙʀ (Volts) @ Iᴛ MAX	Test Current Iᴛ (mA)	Maximum Clamping Voltage Vᴄ @ Iᴘᴘ (V)	Maximum Peak Pulse Current Iᴘᴘ (A)	Maximum Reverse Leakage Iʀ @ Vʀ (µA)	Maximum Temperature Coefficient of Vʙʀ (%/C)
P4SMA6.8A	TVS Diodes	LITTELFUSE	5.8	6.45	7.14	10	10.5	39	1000	0.041

选型表 - LITTELFUSE 立即选型

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【EOL】废弃的TVS标准零件号，无后缀A，Vbr范围+/-10%（LFPCN 41327）

描述- Littelfuse公司宣布将淘汰Vbr ±10%范围的TVS STD元器件型号，并替换为Vbr ±5%型号。这些新型号具有更严格的公差，并已在全球范围内广泛应用。受影响的系列包括SMAJ、P4SMA、SMBJ、P6SMB、SMCJ、1.5SMC、SMDJ、5.0SMDJ、1KSMB、P4KE、P6KE、1.5KE、SA、LCE、5KP、15KPA、20KPA和30KPA。最后购买日期为2020年10月16日，最后发货日期为2020年12月16日。

型号- P4SMA16C,P4SMA16A,SMAJ6.0CA,SMAJ40CA,30KPA90-B,20KPA180,20KPA232C-B,30KPA170CA,P4SMA160,P6KE62C-B,20KPA20,SA18-B,20KPA172,SMDJ78CA,P4SMA170,SA54C-B,1.5SMC13CA,P4KE540-B,SMCJ14CA,P4SMA18C,20KPA36,20KPA88C-B,P4SMA18A,SA7.5-B,SMDJ58C,SMCJ300,P4SMA16CA,SA6.5C-B,5KP120-B,SMCJ100CA,20KPA44,P6KE68C,SA30C-B,P4SMA180,SMBJ300C,20KPA48CA,5KP30C,P4KE18-B,SMBJ300A,20KPA40,5KP30A,SMBJ150CA,20KPA28,SMDJ170A,20KPA26,SMAJ70A,20KPA24,SMAJ70C,15KPA36-B,20KPA192,SMDJ170C,SMDJ58A,20KPA34,SMCJ30C,20KPA32,20KPA30,SA48CA,SMCJ30A,SA180C,20KPA40C-B,SA180A,5KP9.0C-B,1.5KE24-B,30KPA216C-B,1.5SMC9.1,LCE13-B,20KPA144,SMAJ7.0,20KPA64,SMAJ7.5,20KPA60,SA22CA,SMAJ100C,20KPA48,P6KE8.2CA,SMAJ100A,30KPA260-B,P6KE550C-B,20KPA132,1KSMB130A,P4KE180A,1KSMB130C,P4KE180C,20KPA56,SA110CA,20KPA52,20KPA180C,30KPA54CA,P4SMA82CA,P6KE13C-B,SMDJ54A,20KPA160,30KPA198A,SMDJ160CA,30KPA198C,20KPA180A,SMDJ54C,SMBJ400CA,20KPA80,5KP SERIES,20KPA88,P6SMB51CA,P4KE22CA,P4KE6.8C-B,P4KE12C-B,20KPA68,SMCJ220CA,1.5KE510,15KPA40CA,1.5KE51A,1KSMB30CA,1.5SMC39CA,1.5KE11-B,1.5KE51C,20KPA72,15KPA240C-B,P6SMB,P6SMB160,SA70CA,1.5KE36CA,5KP36C,P6SMB16C,20KPA104,15KPA100A,5KP36A,15KPA100C,1.5KE550,P6SMB16A,1.5KE33C-B,30KPA,1KSMB43CA,SMAJ18CA,SA17CA,1.5KE170CA,P6SMB150,5KP90CA,P4SMA170C,1.5KE530,SMDJ51C,SMDJ51A,P4SMA170A,30KPA72-B,P6SMB15C,SA40-B,1.5KE540,LCE7.0-B,15KPA54-B,P6SMB15A,P4SMA10A,1.5KE56A,1.5SMC440A,1.5SMC440C,P4SMA100,20KPA120,SA5.0CA,1.5KE56C,P4SMA480CA,P6KE150-B,5KP24CA,P6SMB130,P6SMB16CA,P4SMA11A,SMBJ90C,SMBJ90A,SMBJ12CA,P6SMB12C,P4KE530C,5KP60-B,P4KE530A,P6SMB13A,20KPA112,P4SMA110,P6SMB13C,P4SMA10C,P4SMA12C,SMBJ5.0A,P6SMB120,SMBJ5.0C,P4SMA12A,P6SMB11C,LCE6.5,P6SMB12A,P4SMA120,20KPA40-B,SMBJ9.0,SA78C-B,P4KE170-B,P4SMA11C,P4SMA13C,P6SMB110,P4SMA13A,P6KE180CA,30KPA102C-B,P6SMB10A,P6SMB10C,P4SMA47CA,15KPA150-B,P6SMB11A,P4SMA130,1KSMB56CA,SMDJ5.0,P6SMB100CA,P6SMB100,15KPA18CA,P4KE400A,P4KE400C,1.5KE10CA,1KSMB68C,1KSMB68A,P4KE300-B,30KPA84C,P4SMA15C,P4SMA15A,15KPA30A,15KPA30C,P6KE27CA,30KPA84A,5KP33A,P6SMB82CA,15KPA180CA,5KP18C-B,P4SMA150,1KSMB6.8CA,5KP11CA,30KPA36CA,5KP33C,P4KE6.8CA,20KPA52CA,P4KE6.8C,P6SMB47CA,1.5SMC250CA,30KPA33C-B,P4KE15C-B,P4SMA480C,P4SMA480A,P6SMB220CA,15KPA240,1KSMB62C,1.5KE540A,1KSMB62A,P4KE220,SA9.0,1.5KE540C,15KPA24A,30KPA90A,30KPA90C,P6KE7.5,P4KE20C,P4KE20A,15KPA24C,SA10-B,SMAJ48CA,SMBJ43CA,30KPA45C-B,SMCJ7.5C,SMAJ400C,SMCJ7.5A,SMAJ400A,30KPA71CA,SMBJ180,LCE7.0,SA90A,SA90C,LCE7.5,1.5KE12C-B,30KPA102A,P4KE10-B,15KPA40-B,30KPA102C,SMBJ18C,SMBJ18A,P4KE200,15KPA220,1.5SMC75CA,1.5KE350-B,P6KE220CA,SMAJ300CA,SA40CA,30KPA54-B,15KPA22A,15KPA22C,P4KE27C-B,1KSMB13CA,1.5KE82C-B,P6KE180-B,20KPA96CA,SMBJ160,SMDJ90,SA26C-B,1.5KE510CA,SA100C,P6KE550-B,SMBJ16C,P6KE100CA,SMBJ16A,30KPA108C,5KP28C,20KPA240CA,15KPA280,SMBJ30CA,5KP28A,1KSMB6.8,30KPA108A,5KP130C-B,15KPA28C,SMDJ85,SMBJ170,15KPA28A,SMAJ180C,SMAJ8.5CA,15KPA18-B,SA54-B,SMAJ180A,P4KE100A,P4KE39C-B,P4KE100C,5KP43C-B,SMBJ17C,P6KE27-B,SMBJ17A,1.5KE6.8C-B,SMBJ120CA,SMDJ78,SMDJ75,20KPA120CA,5KP8.0C,SMDJ70,5KP8.0A,1.5SMC110,15KPA58C-B,1.5SMC10A,5KP250A,1.5SMC10C,P6SMB180,15KPA260,SMBJ14C,SMBJ14A,5KP12-B,5KP250C,P6SMB18A,P6SMB18C,SMDJ16CA,1.5SMC100,SMBJ130C,SMBJ130A,1.5SMC130CA,SMDJ64,15KPA26A,15KPA48CA,15KPA26C,P6SMB170,SMBJ150,SMDJ60,5KP120CA,SMBJ15C,SA100A,SMBJ15A,SMAJ170CA,SA14C-B,SMDJ58,SMDJ54,P6KE75,SMBJ120,SMDJ51,P4SMA9.1,15KPA180A,15KPA180C,30KPA260CA,P4KE220C-B,SMBJ11C,SMBJ12A,SMAJ6.0A,P6KE62CA,SMAJ6.0C,SMDJ48,SA51C-B,P6KE68,SMDJ45,1.5KE250C-B,SMDJ43,1.5SMC91A,1.5SMC91C,SMBJ130,SA7.5CA,SMDJ40,P6KE82,1KSMB39CA,SMCJ7.0C,SMCJ7.0A,SMDJ51CA,15KPA22CA,SMBJ12C,SMBJ13C,SMBJ13A,LCE26-B,P6KE75A,P6KE75C,SMDJ36,1.5KE10-B,SMDJ33,5KP210-B,SMBJ100,P4SMA220A,SMDJ30,P4SMA220C,P4KE480CA,P6KE91,SMCJ150C,30KPA70C-B,SMCJ150A,20KPA172A,20KPA172C,P4KE27C,SA6.0C,SA6.0A,5KP8.5C,SMDJ28,SMDJ26,5KP8.5A,SMDJ24,SMAJ78A,SMAJ78C,SMDJ22,SMBJ110,SMDJ20,5KP120A,5KP120C,SMBJ10C,SMBJ10A,P4KE27A,SMBJ11A,SMAJ22CA,SMDJ18,SMDJ17,SMDJ16,SMDJ15,SMCJ6.5CA,SMDJ14,SMDJ13,SMDJ12,SMDJ11,SMDJ10,SMAJ75A,SMCJ36A,P6KE30,SMAJ75C,SMCJ36C,20KPA48-B,P4SMA9.1A,P4SMA9.1C,P4KE36-B,P4SMA91C,P4SMA91A,P6KE27,1.5KE100A,1.5KE100C,P6SMB170A,P6KE24,P6SMB170C,P6KE22,P4KE250,P6KE43,SMCJ45CA,30KPA84CA,P4KE24C,P6KE75CA,P4KE24A,SMAJ6.5C,P6KE39,SMBJ440C,P6KE36,P6KE33,SMAJ6.5A,SMBJ440A,P4KE350C-B,P6KE51,SMCJ58CA,15KPA22C-B,SMDJ7.5CA,P6KE600C-B,P6KE8.2-B,1.5KE18CA,5KP60CA,1.5KE170-B,P6KE47,SMCJ33A,SMCJ33C,P4SMA350A,P6KE62,SA36-B,P4KE22C,5KP43-B,P4KE22A,P4SMA350C,P4SMA6.8CA,SMCJ350,1.5KE30C-B,SA6.5C,P4KE6.8A,SA6.5A,P6KE56,SMAJ60,SA36CA,1.5KE6.8,SMBJ,5KP30-B,SMDJ20CA,SMCJ200,P4SMA15CA,30KPA108,SMAJ58,30KPA102,P6SMB200,SMAJ54,SMAJ51,SMDJ160A,P4SMA510C,SMAJ60A,SMAJ,SMAJ60C,P4SMA510A,SMDJ160C,SMDJ48C,SMDJ48A,SMCJ20C,SMAJ45,SMCJ7.0CA,SMAJ48,P4KE36CA,SMCJ20A,30KPA198-B,SMAJ43,SMAJ40,P6KE200A,20KPA36CA,SMDJ,SA160-B,15KPA48-B,SMBJ85C,SMBJ85A,P4KE9.1,P4KE120CA,SMAJ6.0,P4SMA400CA,30KPA120,SMAJ6.5,SMAJ36,P6KE200C,SMAJ30,SMAJ33,SMCJ,SMDJ45C,SMDJ33CA,SMDJ45A,1.5SMC8.2CA,20KPA72-B,SMAJ28,1KSMB120A,1KSMB120C,SMAJ24,30KPA132,SMAJ26,SMAJ20,SMAJ22,SMCJ13CA,SMDJ64CA,5KP180CA,SMAJ17,SMAJ16,15

September 4th, 2020 - LITTELFUSE - 产品变更通知及停产信息代理服务技术支持批量订货