WMSIC Electronic Components

TWGMC SMBJ100A TVS Diode SMBJ100A

ModelSMBJ100A
PackageSMB(DO-214AA)
BrandTWGMC
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration Electronic Component

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
TWGMC SMBJ100A
Type
TWGMC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TWGMC
Electronic Component
SMBJ100A
Electronic Component
1
Package
SMB(DO-214AA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.159g
Electronic Component
1
Cj- Capacitor
390pF
Electronic Component
BM0266045571
Operating Temperature
65℃~+150℃
Voltage
162V
Current(Ir)
1uA
Voltage(VBR)
123V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

SMBJ100A瞬态抑制二极管(TVS)产品概述

SMBJ100A是台湾迪嘉(TWGMC)推出的单向瞬态抑制二极管(TVS),采用SMB(DO-214AA)表面贴装封装,专为电路中的瞬态过压防护设计,可有效抑制静电放电(ESD)、感应雷击、负载突变等产生的尖峰电压,保护敏感电子元器件免受损坏。

一、产品核心定位与典型应用场景

SMBJ100A聚焦中高压电路的瞬态防护,宽温度范围与高功率耐受能力使其适配多种严苛场景:

  1. 工业控制:PLC数字输入输出端口、传感器接口,防护工厂静电与感应浪涌;
  2. 汽车电子:车载12V/24V电源、显示屏、胎压监测传感器,耐受发动机舱-40℃~125℃极端温度;
  3. 消费电子与通信:AC/DC适配器输出端、以太网端口、路由器接口,抑制日常静电与雷击过压;
  4. 户外设备:太阳能逆变器、工业摄像头电源/信号线路,应对户外温度波动与瞬态冲击。

二、关键电性能参数解析

SMBJ100A参数平衡防护能力与电路兼容性,核心参数及意义如下:

  1. 反向工作峰值电压(Vrwm):100V
    电路正常工作时可长期承受的最大反向电压,需匹配电路额定电压(如电路工作电压≤90V时,100V提供安全裕量)。

  2. 击穿电压(Vbr):123V
    反向击穿起始电压,比Vrwm高23%,确保TVS在过压时快速响应(不早于正常电压击穿,不晚于防护电压启动)。

  3. 钳位电压(Vc):162V
    峰值脉冲电流通过时的最大电压(核心防护指标),与Ppp匹配(3.7A×162V≈600W),可确保被保护器件电压不超162V。

  4. 峰值脉冲电流(Ipp)与功率(Ppp)

    • Ipp:3.7A@10/1000μs波形(工业标准脉冲:上升沿10μs,半峰值1000μs);
    • Ppp:600W@10/1000μs;
      覆盖大多数工业与汽车场景的浪涌需求。
  5. 反向漏电流(Ir):1uA@Vrwm
    漏电流极小,不增加电路功耗,避免影响敏感电路信号精度。

  6. 结电容(Cj):390pF
    适合低频电路(电源、数字IO),高频射频电路需选低容TVS替代。

  7. 工作温度:-65℃~+150℃
    宽温设计,满足车载级(-40℃~125℃)与工业级温度要求。

三、封装与可靠性设计

  1. SMB(DO-214AA)封装
    表面贴装尺寸(约2.4mm×1.6mm×1.1mm),体积小、兼容回流焊,色环标记(对应阴极)便于极性识别。

  2. 品牌可靠性
    TWGMC为专业TVS制造商,产品通过RoHS/REACH认证,宽温参数经可靠性测试,长期稳定工作。

四、典型应用电路参考

SMBJ100A采用并联防护,需靠近被保护器件/输入端口安装(减少寄生电感影响),典型电路:

[输入端口] → [保险丝] → [SMBJ100A(并联地)] → [被保护器件(如PLC输入)]
  • 保险丝:配合TVS形成“过压+过流”双重防护;
  • 并联位置:靠近输入端口最快抑制瞬态过压。

五、选型与替换注意事项

  1. 极性确认:SMBJ100A为单向TVS,双向防护选SMBJ100CA;
  2. 电压匹配:Vrwm≥电路正常工作电压(如80V电路选100V更安全);
  3. 功率匹配:Ppp≥电路最大瞬态功率(如500W浪涌选600W满足);
  4. 结电容适配:高频电路(≥10MHz)需选Cj<100pF的TVS。

SMBJ100A凭借高防护能力、宽温范围与小型化封装,成为工业、汽车电子中压电路瞬态防护的优选器件,有效提升电路抗干扰性与可靠性。

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