WMSIC Electronic Components

Jingdao Microelectronics SMAJ16A

ModelSMAJ16A
PackageSMA
BrandElectronic
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Electronic SMAJ16A
Type
Jingdao Microelectronics
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
SMAJ16A
Electronic Component
1
Package
SMA
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.12g
Electronic Component
1
Electronic Component
BM0264086074
Operating Temperature
65℃~+150℃
Voltage
26V
Current(Ir)
1uA
Voltage(VBR)
19.7V
Electronic Component
Electronic Component
Electronic Component
5000

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

SMAJ16A TVS二极管产品概述

SMAJ16A是晶导微电子推出的一款表面贴装瞬态抑制二极管(TVS),采用DO-214AC(SMA)封装,专为电子电路的瞬态过压防护设计,可快速吸收浪涌脉冲,有效保护敏感元器件免受静电、雷击或负载切换产生的过压损坏,是消费电子、汽车电子等领域常用的防护器件。

一、核心电性能参数详解

SMAJ16A的关键参数直接决定其防护能力,具体如下:

  • 反向截止电压(Vrwm):16V
    器件正常工作时可承受的最大反向直流电压,低于击穿电压,确保电路常态下稳定运行,不会因漏电流影响信号传输。
  • 钳位电压:26V
    遭遇瞬态浪涌时,器件可将电压快速钳位在26V以内,避免后端芯片、电路因过压击穿损坏。
  • 峰值脉冲电流(Ipp):15.4A@10/1000μs
    以10/1000μs浪涌波形(上升时间10μs、半峰值时间1000μs)为标准,可承受的最大脉冲电流,体现浪涌吸收能力。
  • 峰值脉冲功率(Ppp):400W@10/1000μs
    对应上述脉冲电流下的最大功耗,反映器件对高能量浪涌的耐受能力。
  • 击穿电压:19.7V
    反向电压超过此值时,器件进入雪崩击穿状态,开始持续吸收浪涌能量,保护电路。
  • 反向漏电流(Ir):1μA
    常态下反向漏电流极小,对电路功耗影响可忽略,不干扰正常信号传输。

二、封装与品牌背景

  • 封装:DO-214AC(SMA)
    小型表面贴装封装,尺寸紧凑(约2.7×1.6×1.0mm),适合高密度PCB设计,焊接兼容性好,支持回流焊、波峰焊等常规工艺,便于自动化生产。
  • 品牌:晶导微电子
    国内知名半导体制造商,专注于功率器件、保护器件研发生产,产品符合工业级可靠性要求,广泛应用于消费电子、汽车电子、工业控制等领域,口碑稳定。

三、典型应用场景

SMAJ16A的防护能力适配多种电子设备,核心应用场景包括:

  1. 消费电子:手机、平板、笔记本的电源端口、USB/HDMI数据接口,保护充电电路、接口芯片免受静电或浪涌损坏;
  2. 汽车电子:车载导航、行车记录仪的电源输入、传感器接口,应对汽车点火、负载切换产生的瞬态浪涌;
  3. 工业控制:PLC、传感器模块的信号端口,抵御工业环境中的电磁干扰、浪涌脉冲;
  4. 通信设备:路由器、交换机的以太网接口、电源模块,保护通信芯片免受雷击或电源波动影响。

四、关键性能优势

  • 快速响应:响应时间达ns级,远快于普通稳压管,可瞬间吸收浪涌,避免电路损坏;
  • 低功耗干扰:常态漏电流仅1μA,对电路正常工作无明显影响;
  • 宽温可靠:工作温度覆盖-65℃~+150℃,适应极端环境(如汽车高温、工业低温);
  • 高性价比:紧凑封装+稳定性能,满足多数中低端防护需求,成本可控。

五、使用注意事项

  1. 选型匹配:需根据电路常态工作电压选择Vrwm(如电路电压≤16V),避免Vrwm过高导致防护不足,或过低影响电路稳定;
  2. 焊接工艺:遵循DO-214AC封装的回流焊温度曲线(通常峰值温度260℃左右),避免过热损坏器件;
  3. 布局优化:尽量靠近被保护端口/芯片,减少引线电感,提升防护效果;
  4. 浪涌匹配:结合电路实际浪涌等级(如IEC 61000-4-2静电、IEC 61000-4-5浪涌),确认参数是否适配。

总结

SMAJ16A作为一款高性价比的表面贴装TVS二极管,凭借紧凑封装、快速响应、宽温可靠等优势,成为电子电路过压防护的常用选择,可有效提升设备抗干扰能力与可靠性,适配多种应用场景。

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