WMSIC Electronic Components

TWGMC SMAJ12A TVS Diode SMAJ12A

ModelSMAJ12A
PackageDO-214AC
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
TWGMC SMAJ12A
Type
TWGMC
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TWGMC
Electronic Component
SMAJ12A
Electronic Component
1
Package
DO-214AC
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.102g
Electronic Component
1
Electronic Component
BM0265082557
Operating Temperature
65℃~+150℃
Voltage
19.9V
Current(Ir)
1uA
Voltage(VBR)
14.7V
Electronic Component
Electronic Component

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

SMAJ12A 单向TVS管产品概述

一、产品核心定位与应用场景

SMAJ12A是台湾迪嘉(TWGMC)推出的单向瞬态抑制二极管(TVS),核心作用是快速抑制电路中的静电放电(ESD)和浪涌过压,保护后端敏感元器件(如IC、传感器、接口芯片等)免受损坏。其设计兼顾小体积与高防护能力,适配消费电子、汽车电子、工业控制、通信设备等多领域的过压防护需求,尤其适合对空间紧凑性要求较高的设备。

二、关键技术参数深度解析

SMAJ12A的参数围绕“低导通损耗、高浪涌承受、宽温稳定”核心设计,关键参数的应用价值如下:

  1. 极性与截止电压:单向导通,反向截止电压(Vrwm)为12V——正常工作时,TVS处于截止状态,不影响电路12V以内的电压传输,适配低电压电路的防护需求;
  2. 击穿与钳位电压:击穿电压(典型值)14.7V,钳位电压19.9V——当浪涌电压超过14.7V时,TVS快速导通(响应时间ns级),将电路电压钳位在19.9V以下,避免后端器件过压击穿;
  3. 浪涌承受能力:峰值脉冲电流(Ipp)20.1A,峰值脉冲功率(Ppp)400W(10/1000μs波形)——可承受IEC 61000-4-5标准浪涌冲击,有效保护电源、接口等易受浪涌影响的电路;
  4. 低漏电流:反向电流(Ir)仅1μA——截止状态下漏电流极小,不额外增加电路功耗,适配低功耗设备;
  5. 宽温范围:工作温度-65℃~+150℃——可稳定工作在极端环境(如汽车发动机舱、工业高温车间),覆盖汽车级、工业级应用场景。

三、封装与可靠性设计

SMAJ12A采用DO-214AC(SMA)表面贴装封装,具有以下优势:

  • 小体积:尺寸紧凑(约2.7×1.6×1.1mm),适配智能手机、智能穿戴等小型化设备的高密度布局;
  • 散热优化:封装结构提升了热传导效率,结合宽温设计,可长期稳定承受浪涌冲击后的热量累积;
  • 一致性管控:批量生产中击穿电压、钳位电压的离散性控制在±5%以内,降低电路设计的冗余需求。

四、品牌与品质保障

TWGMC(台湾迪嘉)是专注于TVS/ESD防护器件的专业厂商,SMAJ12A的品质符合:

  • 环保合规:通过RoHS 2.0、REACH认证,无铅无卤,适配全球市场;
  • 可靠性测试:完成高低温循环(-65℃~150℃×1000次)、浪涌冲击(400W×10次)、ESD放电(±15kV接触放电)等多项可靠性测试;
  • 量产稳定:采用自动化生产工艺,参数一致性好,适配大规模量产需求。

五、典型应用领域

  1. 消费电子:手机Type-C接口、平板充电端口、笔记本USB接口的ESD/浪涌防护;
  2. 汽车电子:车载显示屏、胎压传感器、ADAS摄像头的过压防护(适配汽车级温度范围);
  3. 工业控制:PLC输入输出端口、工业传感器的静电防护;
  4. 通信设备:路由器、交换机的以太网端口、电源模块的浪涌防护。

六、产品核心优势总结

SMAJ12A凭借小体积DO-214AC封装、宽温稳定、高浪涌承受能力、低漏电流等特点,成为多领域过压防护的高性价比选择,尤其适合对空间和可靠性要求较高的电子设备设计。

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