WMSIC Electronic Components

DOWO SMAJ5.0CA

ModelSMAJ5.0CA
PackageDO-214AC
BrandDOWO
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
DOWO SMAJ5.0CA
Type
DOWO
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SMAJ5.0CA
Electronic Component
1
Package
DO-214AC
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.12g
Electronic Component
1
Electronic Component
BM0264548675
Voltage
9.2V
Current(Ir)
800uA
Voltage(VBR)
6.4V
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.

SMAJ5.0CA 产品概述

一、产品简介

SMAJ5.0CA 是 DOWO(东沃)推出的一款双向 TVS 晶片二极管,采用玻璃钝化芯片技术,封装为 DO-214AC(SMA)。该器件专为瞬态过压浪涌保护设计,响应速度极快,能在突发脉冲事件中钳位并吸收能量,保护下游电路免受损坏。

二、主要参数与特性

  • 极性:双向
  • 反向截止电压 Vrwm:5V
  • 击穿电压 VBR:6.4V(典型)
  • 钳位电压 Vc:9.2V(在指定脉冲条件下)
  • 峰值脉冲电流 Ipp:43.48A(10/1000µs)
  • 峰值脉冲功率 Ppp:400W(波形 10/1000µs,重复率 0.01%)
  • 反向电流 Ir:800µA(在 Vrwm 条件下)
  • 其它:低泄漏、玻璃钝化、RoHS 合规

三、性能解读

400W(10/1000µs)表明器件能在较长尾部的冲击波形下吸收大量能量,适合雷击感应或工业开关冲击类的浪涌情形。双向结构适用于可能出现正负极性瞬变的电路。9.2V 的钳位电压在 5V 系统中提供可靠保护,但需要注意 800µA 的泄漏在对电量敏感的电池供电设备中可能较高。

四、典型应用场景

适用于 5V 电源总线、USB/外围接口保护、通讯接口(如 RS-485、CAN 总线需评估)、工业控制器、交换机和电源模块的入口级浪涌保护。对于纯直流稳定电源,若对泄漏敏感,可优先考虑单向型号。

五、封装与可靠性

DO-214AC(SMA)封装便于波峰焊或回流焊自动化组装,热耗散能力良好。玻璃钝化工艺提高了结点稳定性与长期可靠性,符合 RoHS 环保要求。重复浪涌能力受功耗及热环境限制,规范使用可获得长期稳定保护效果。

六、使用建议与注意事项

  • 尽量将器件布置在接近入射端(接口或连接器)位置,缩短走线,减小串联电感。
  • 对于频繁或高能量冲击场景,考虑并联多只或增加串联阻尼/电阻以分摊能量。
  • 留意 Vrwm 下的泄漏电流对待机功耗的影响,电池供电设备可考虑单向替代品。
  • 焊接时遵循厂家回流曲线,避免过热损伤封装与内部结构。

七、结论与推荐

SMAJ5.0CA 提供对 5V 级系统的高能量瞬态保护,钳位性能优秀、响应迅速,适合工业与消费类设备的入口防护。设计时应综合评估泄漏、钳位电压与系统容忍度,选择双向或单向型号以满足具体应用需求。若需更高能量吸收能力或更低泄漏,可与厂商讨论更适合的型号或并联/级联保护方案。

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