WMSIC Electronic Components

TECH PUBLIC SMAJ15CA

ModelSMAJ15CA
PackageDO-214AC(SMA)
BrandTECH PUBLIC
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
TECH PUBLIC SMAJ15CA
Type
TECH PUBLIC
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TECH PUBLIC
Electronic Component
SMAJ15CA
Electronic Component
1
Package
DO-214AC(SMA)
Electronic Component
Electronic Component
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.118g
Electronic Component
1
Channel Count
Electronic Component
Electronic Component
BM0257695349
Operating Temperature
55℃~+150℃
Voltage
24.4V
Current(Ir)
1uA
Voltage(VBR)
18.5V
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.

SMAJ15CA 产品概述

一、产品简介

SMAJ15CA 是 TECH PUBLIC(台舟电子)推出的一款单路瞬态抑制二极管(TVS),封装为 DO-214AC(SMA)。器件面向瞬态浪涌与电气冲击保护场景设计,适用于中低电压直流供电系统及信号线防护。其反向截止电压(Vrwm)为 15V,击穿电压约 18.5V,钳位电压 24.4V(在指定冲击条件下),在 10/1000µs 波形下峰值脉冲功率可达 400W,单次脉冲峰值电流为 16.4A,适配常见工业与消费类浪涌抑制需求。

二、主要参数

  • 品牌:TECH PUBLIC(台舟电子)
  • 封装:DO-214AC(SMA),单路(单向)
  • 反向截止电压 Vrwm:15V
  • 击穿电压 Vbr:约 18.5V
  • 钳位电压 Vclamp:24.4V(对应规格条件)
  • 峰值脉冲电流 Ipp:16.4A
  • 峰值脉冲功率 Ppp:400W(10/1000µs 波形)
  • 反向电流 Ir:1µA(标称条件)
  • 工作温度:-55℃ ~ +150℃

三、产品特性与优势

  • 高能量吸收能力:400W(10/1000µs)峰值功率能在常见浪涌条件下有效钳制电压,保护后级器件免受高电压冲击。
  • 低泄漏:典型反向电流仅 1µA,有利于低功耗系统和精密信号链的长期稳定。
  • 宽工作温度范围:-55℃至+150℃,适用于严苛环境和汽车级或工业级应用。
  • 标准 SMA 封装:DO-214AC(SMA)为常用表面贴装封装,便于自动化贴装与替换。

四、典型应用场景

  • 12V 电源总线保护(车载、通信电源、工业电源)
  • 电源模块输入端与开关电源浪涌保护
  • 接口保护:CAN、RS-485 等工业通信接口(需根据信号特性选型)
  • 消费电子、监控设备、楼宇与安防系统中的过压/浪涌防护

五、安装与使用注意事项

  • 尽量将 TVS 器件靠近被保护器件的电源入口或接口布置,减少串联阻抗与走线电感,以提高钳位效率。
  • 注意器件最大冲击能量,避免在超出规格的条件下多次重复冲击。长期频繁承受接近额定峰值的浪涌会影响寿命。
  • 焊接与回流工艺需遵循厂商热冲击与回流曲线,避免超温导致封装或内部结构损伤。
  • 对于双向信号线或对地双向浪涌,应确认单向器件的适配性,必要时选择双向 TVS。

六、可靠性与环境适应

SMA 封装具备较好的散热能力与机械强度,适合常规 SMT 加工流程。器件在推荐温度范围内能保持稳定的防护特性;在高温或高能量冲击下建议进行适当的热管理设计,并按系统级防护策略进行器件并联或级联以分摊能量。

七、选型建议

  • 若系统工作电压接近 12V,则 Vrwm=15V 的型号为常见选择,能在正常工作下不触发而在浪涌时快速钳位。
  • 关注钳位电压是否低于被保护器件的耐压门槛,24.4V 钳位适合多数 12V 线缆与模块保护。
  • 如需更高能量吸收或更低钳位电压,可考虑并联或选用额定能量更高的封装型号。

八、包装与采购信息

此型号封装为 DO-214AC(SMA),便于标准 SMT 生产线批量贴装。采购时请确认 TECH PUBLIC(台舟电子)原厂或授权代理,注意器件批次与 RoHS 等合规性证书以满足项目需求。

总结:SMAJ15CA 是一款面向 12V 级别电源与接口保护的高能量吸收 TVS 二极管,具有低泄漏、宽温度范围与标准 SMA 封装,适合工业、车规与民用电子的脉冲浪涌防护。

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