WMSIC Electronic Components

Jingdao Microelectronics SMCJ20CA

ModelSMCJ20CA
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 SMCJ20CA
Type
Jingdao Microelectronics
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
SMCJ20CA
Electronic Component
1
Package
SMC
Electronic Component
Electronic Component
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.381g
Electronic Component
1
Channel Count
Electronic Component
Electronic Component
BM0264991288
Operating Temperature
55℃~+150℃
Voltage
32.4V
Current(Ir)
1uA
Voltage(VBR)
24.5V
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.

晶导微电子SMCJ20CA TVS二极管产品概述

SMCJ20CA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)贴片封装,专为电路瞬态过压防护设计,具备宽温适应、高功率密度等特点,广泛覆盖电源、通信、工业控制等应用场景。

一、产品基本识别

  1. 品牌与型号定义:由国内半导体厂商晶导微电子生产,型号中“SMCJ”标识TVS瞬态抑制二极管及SMC封装;“20”对应反向截止电压20V;“CA”明确双向保护特性(无正负极性要求)。
  2. 封装形式:采用SMC(DO-214AB)贴片封装,尺寸紧凑(典型值:长3.0mm×宽2.5mm×高1.0mm),支持自动贴装(SMT)工艺,适合高密度PCB布局,焊接可靠性高。
  3. 通道结构:单路双向设计,可同时防护正、反向瞬态过压,简化电路设计流程。

二、核心电参数深度解析

SMCJ20CA的关键参数针对瞬态防护需求优化,核心指标如下:

  • 反向截止电压(Vrwm):20V,正常工作时允许施加的最大反向直流电压,此状态下器件截止,无明显导通电流,不影响电路正常运行。
  • 击穿电压(Vbr):24.5V,反向电压超过此值时,器件进入雪崩击穿状态,快速响应瞬态过压。
  • 钳位电压(Vc):32.4V(对应峰值脉冲电流下),是瞬态过压时器件能将电压限制的最高值,确保后级敏感电路(如MCU、传感器)不受过压损坏。
  • 峰值脉冲电流(Ipp):46.3A@10/1000μs波形(模拟雷击、静电放电等瞬态脉冲),是器件能承受的最大瞬态电流,防护能力突出。
  • 峰值脉冲功率(Ppp):1.5kW@10/1000μs,直接体现瞬态能量吸收能力,可有效应对常见浪涌干扰。
  • 反向漏电流(Ir):1μA(反向截止电压下),漏电流极小,不会增加电路功耗,适合低功耗场景。

三、工作环境与可靠性

SMCJ20CA具备出色的环境适应性与可靠性:

  • 宽温范围:工作温度覆盖**-55℃~+150℃**,满足工业级、汽车级等严苛环境要求(如户外设备、车载电子)。
  • 双向防护可靠性:无极性设计降低安装错误率;雪崩击穿过程可逆,多次瞬态冲击后仍保持防护性能。
  • 封装可靠性:SMC封装采用塑料封装工艺,抗机械应力、耐湿热,符合RoHS环保标准,长期使用稳定性高。

四、典型应用场景

SMCJ20CA的防护特性使其适用于多种电路场景:

  1. 电源电路防护:直流电源输入端(12V/24V电源)的浪涌保护,防止雷击、开关切换过压损坏电源模块。
  2. 通信接口防护:RS485、CAN总线、以太网等接口的ESD与浪涌防护,保障数据传输稳定。
  3. 工业控制设备:PLC、传感器、执行器的过压防护,适应工业现场宽温与干扰环境。
  4. 汽车电子:车载仪表盘、通信模块、车身控制器的瞬态保护,满足汽车级温度与可靠性要求。
  5. 消费电子:智能家居、小型家电的电源与信号端口防护,提升产品抗干扰能力。

五、产品优势总结

相比同类器件,SMCJ20CA具备以下优势:

  • 高功率密度:1.5kW峰值功率集成于小体积SMC封装,兼顾防护能力与PCB空间。
  • 宽温适配:-55℃~+150℃宽温范围,覆盖多数应用场景。
  • 设计简化:双向无极性,无需额外匹配电路,降低设计成本。
  • 低功耗:1μA反向漏电流,不影响电路正常功耗。
  • 成熟可靠:晶导微电子成熟工艺,SMC封装可靠性高,适合批量应用。

综上,SMCJ20CA是一款性能均衡、适用广泛的双向TVS二极管,可有效为各类电路提供瞬态过压防护,是电源、通信、工业等领域的理想选择。

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