WMSIC Electronic Components

Jingdao Microelectronics SMCJ24CA

ModelSMCJ24CA
PackageSMC
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Electronic SMCJ24CA
Type
Jingdao Microelectronics
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
SMCJ24CA
Electronic Component
1
Package
SMC
Electronic Component
Electronic Component
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.381g
Electronic Component
1
Electronic Component
BM0264858926
Operating Temperature
55℃~+150℃
Voltage
38.9V
Current(Ir)
1uA
Voltage(VBR)
29.5V
Electronic Component
Electronic Component
Electronic Component
3000

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

晶导微电子SMCJ24CA TVS二极管产品概述

SMCJ24CA是晶导微电子推出的一款双向瞬态抑制二极管(TVS),采用SMC(DO-214AB)表面贴装封装,专为电子线路的过压浪涌保护设计,兼具宽温可靠性与高脉冲耐受能力,适用于工业、汽车、消费电子等多场景应用。

一、产品基本定位与核心功能

作为双向TVS器件,SMCJ24CA无需区分正负极,可同时应对线路中正向/反向瞬态过压冲击(如雷击、静电放电、开关浪涌等),核心功能是快速钳位浪涌电压至安全范围,避免后端敏感器件(MCU、传感器、通信芯片)因过压损坏。其体积小巧,适配高密度PCB布局,是替代传统单向TVS的高性价比选择。

二、关键电气参数详解

SMCJ24CA的参数针对典型浪涌场景优化,核心参数及意义如下:

  1. 反向截止电压(Vrwm):24V
    正常工作时可长期承受的最大反向电压,对应反向漏电流≤1μA,确保线路信号无干扰。
  2. 击穿电压(Vbr):29.5V
    电压超过此值时器件快速导通(响应时间ns级),进入浪涌抑制模式。
  3. 钳位电压(Vc):38.9V(@10/1000μs脉冲)
    符合IEC 61000-4-5标准的浪涌波形下,将电压钳位至38.9V以内,远低于多数敏感器件耐压(如常见MCU耐压≤50V)。
  4. 峰值脉冲电流(Ipp):38.6A(@10/1000μs)
    单次浪涌可承受的最大峰值电流,配合1.5kW峰值脉冲功率(Ppp),有效抑制中等强度浪涌。
  5. 工作温度:-55℃~+150℃
    覆盖工业级与汽车级环境,适合极端温度场景稳定运行。

三、封装特性与可靠性设计

  1. SMC封装优势
    体积仅约2.7mm×5.0mm×1.6mm,表面贴装兼容回流焊/波峰焊,适配高密度PCB;引脚短、寄生电感低,提升浪涌响应速度。
  2. 双向设计简化应用
    无需区分正负极,焊接无极性要求,降低生产出错率,尤其适合差分信号线路(RS485、CAN总线)。
  3. 宽温可靠性
    晶导采用高温稳定芯片材料与封装胶,确保-55℃~+150℃范围内漏电流无漂移,长期可靠性符合工业级标准。

四、典型应用场景

  1. 工业控制:传感器接口、PLC I/O口、电机驱动线路的浪涌抑制(应对开关浪涌、雷击干扰)。
  2. 汽车电子:车载CAN总线、胎压监测传感器、USB接口的过压保护(符合汽车级温度要求)。
  3. 消费电子:USB Type-C、HDMI、音频接口的ESD与浪涌抑制(1.5kW功率应对日常冲击)。
  4. 通信设备:基站射频接口、光纤收发器端口的双向过压保护(适配差分信号传输)。

五、选型与使用注意事项

  1. 选型匹配:Vrwm(24V)需高于线路正常电压(如≤24V适用),钳位电压(38.9V)低于被保护器件耐压(≥40V即可)。
  2. 焊接规范:回流焊峰值≤260℃(≤30s),波峰焊≤245℃(≤5s),避免高温损坏。
  3. 布局建议:靠近被保护器件安装,减少线路寄生电感;直接并联于信号/电源与地之间。

综上,SMCJ24CA以双向保护、宽温可靠、高脉冲耐受为核心优势,是各类电子线路过压保护的高性价比选择,尤其适合对体积、温度要求严格的场景。

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