WMSIC Electronic Components

BORN SMCJ22CA

ModelSMCJ22CA
PackageSMC(DO-214AB)
BrandBORN
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
BORN SMCJ22CA
Type
BORN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BORN
Electronic Component
SMCJ22CA
Electronic Component
1
Package
SMC(DO-214AB)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.46g
Electronic Component
1
Electronic Component
BM0264602948
Voltage
35.5V
Current(Ir)
1uA
Voltage(VBR)
24.4V
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.

SMCJ22CA 瞬态抑制二极管(TVS)产品概述

SMCJ22CA是伯恩半导体(BORN)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,专为电路过压保护设计,可有效吸收雷击、静电放电(ESD)、开关瞬态等突发过压脉冲,保护后端敏感电子元件免受损坏。

一、产品定位与核心功能

作为通用型TVS器件,SMCJ22CA的核心作用是**“瞬态过压钳位”**:当电路出现瞬间过压(如充电插头插拔、电机启停、雷击感应等)时,器件快速反向击穿,将过压脉冲钳位在安全范围,同时泄放脉冲能量,避免后端IC、传感器、接口电路被击穿。

其双向极性设计是核心优势——无需区分正负极,安装直接贴装,简化生产流程,降低错装风险。

二、关键电气参数详解

SMCJ22CA的参数经严格测试,覆盖常规过压保护场景,核心参数如下:

参数名称 规格/典型值 意义说明 极性 双向 正反向均能保护,安装无极性要求 反向截止电压(Vrwm) 22V 正常工作可承受的最大反向电压,需匹配电路正常电压(如12V电路适配性强) 击穿电压(Vbr) 24.4V 反向击穿阈值(约为Vrwm的1.1倍),启动保护的临界电压 钳位电压(Vclamp) [email protected] 峰值脉冲电流42.3A时,将电压钳位至35.5V,保护后端元件不超耐压 峰值脉冲电流(Ipp) 42.3A 单次8/20μs标准脉冲可承受的最大电流峰值 峰值脉冲功率(Ppp) 1.5kW 瞬态功率容量,可吸收1.5kW突发脉冲能量 反向漏电流(Ir) 1μA 截止状态漏电流极小,不影响电路正常工作

注:以上数据基于伯恩官方测试(25℃环境)。

三、封装与物理特性

SMCJ22CA采用SMC(DO-214AB)表面贴装封装,具备三大优势:

  1. 尺寸紧凑:约2.5mm×6.0mm×1.0mm,适配高密度PCB,节省电路板空间;
  2. 散热可靠:金属底座快速散发热量,避免脉冲能量积累过热;
  3. 焊接兼容:支持回流焊、波峰焊,焊接后机械强度高,引脚布局与同类SMC器件一致,可直接替换。

四、典型应用场景

SMCJ22CA的参数特性适配多领域:

  1. 消费电子:手机、平板、笔记本充电端口(USB接口)保护,防止充电瞬态过压;
  2. 工业控制:PLC模块、传感器接口、电机驱动电路保护,抵御现场开关瞬态和感应雷击;
  3. 通信设备:路由器、交换机以太网接口、射频模块保护,避免雷击过压损坏;
  4. 家电产品:洗衣机、空调控制电路保护,过滤电源开关瞬态干扰;
  5. 车载辅助保护:非汽车级场景下(如车载显示屏)的过压防护(需确认汽车级认证需求)。

五、可靠性与环境适应性

SMCJ22CA经多项可靠性测试,满足常规场景要求:

  • 工作温度:常规工业级-55℃至+150℃(实际需参考datasheet);
  • 脉冲耐受:可承受数千次8/20μs标准脉冲冲击,重复脉冲性能稳定;
  • ESD防护:符合IEC 61000-4-2标准,抵御接触放电(8kV)、空气放电(15kV)。

六、选型与使用注意事项

确保保护效果需注意:

  1. 参数匹配:Vrwm需大于电路正常电压(如12V电路选22V足够);钳位电压需低于后端元件最大耐压(如元件耐压40V则安全);
  2. 安装位置:靠近被保护电路输入端(如电源接口),减少引线电感,避免过压残留;
  3. 焊接规范:回流焊≤260℃(10秒内)、波峰焊≤240℃(5秒内),避免高温损坏;
  4. 并联注意:如需更大功率,可并联同型号器件,但需确保参数一致性(Vbr偏差≤5%),避免分流不均失效。

总结

SMCJ22CA凭借双向极性、紧凑封装、1.5kW脉冲功率,成为消费电子、工业控制、通信设备的理想过压保护选择。低漏电流、高脉冲耐受能力,可提升电路抗干扰性与可靠性,降低售后故障风险。

如需完整细节,可查阅伯恩半导体官方SMCJ22CA datasheet。

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