WMSIC Electronic Components

BORN SMFJ20CA

ModelSMFJ20CA
PackageSOD-123F
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
BORN SMFJ20CA
Type
BORN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BORN
Electronic Component
SMFJ20CA
Electronic Component
1
Package
SOD-123F
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.04g
Electronic Component
1
Electronic Component
BM0258885497
Voltage
32.4V
Current(Ir)
1uA
Voltage(VBR)
22.2V
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.

SMFJ20CA 瞬态抑制二极管产品概述

一、产品简介

SMFJ20CA 是 BORN(伯恩半导体)出品的一款双向瞬态电压抑制器(TVS),封装为 SOD-123F,专为保护敏感电子电路免受瞬态过电压冲击设计。器件在额定反向工作电压(Vrwm)20V 下可提供快速钳位响应与较低的漏电流,适用于直流和交流线路的浪涌防护。

二、主要参数亮点

  • 极性:双向,能同时抑制正负极性瞬态脉冲,适合交流和差分信号保护。
  • 反向工作电压 Vrwm:20V(稳压前的正常工作电压)。
  • 击穿电压 Vbr:22.2V,表示在标准测试电流下进入雪崩状态的电压区间。
  • 钳位电压 Vc:32.4V(在 Ipp=6.2A 条件下),提供有效的过压钳位以保护下游元件。
  • 峰值脉冲电流 Ipp:6.2A,配合峰值脉冲功率 Ppp=200W,可承受工业级浪涌脉冲。
  • 反向漏电流 Ir:典型 1µA,低漏电有利于节能与对高阻电路的保护。

三、典型应用场景

  • 通信接口保护:例如串口、以太网端口及差分信号线的浪涌保护。
  • 电源线与信号线保护:适用于 12V~24V 等中低压直流系统的输入保护。
  • 汽车电子与工业控制:在瞬态干扰频繁的环境中提供可靠防护(需与系统级规范共同验证)。
  • 消费电子与边缘设备:保护充电器、适配器及外设接口免受雷击与开关瞬态影响。

四、封装与安装建议

SOD-123F 小型表贴封装利于高密度电路板布局。建议在受保护端与被保护端之间尽量缩短导线长度,靠近被保护器件放置 TVS 以提高抑制效率。焊接时遵循厂家回流曲线,避免过温损伤器件。

五、性能与可靠性说明

SMFJ20CA 在标准测试条件下能提供快速的瞬态钳位能力与高重复冲击寿命。低漏电流与稳定的击穿、钳位特性,有助于长期稳定工作。对于较高能量需求,可与其他浪涌抑制或限流元件配合使用以提升系统可靠性。

六、使用注意事项

  • 在设计前务必参考完整数据手册,确认脉冲波形、冲击能量等级(如 8/20µs 等)与应用条件是否匹配。
  • 双向型号适合无偏置或交流线路保护;若为单向直流线路,选择单向 TVS 可获得更低的钳位电压。
  • 若用于汽车或高能环境,请按相关汽车/工业标准做系统级验证。

如需该型号的完整电气特性曲线、热阻参数或推荐布局示意图,可提供具体应用场景,我将进一步给出详细建议。

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