WMSIC Electronic Components

BORN SMFJ40CA

ModelSMFJ40CA
PackageSOD-123FL
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
BORN SMFJ40CA
Type
BORN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BORN
Electronic Component
SMFJ40CA
Electronic Component
1
Package
SOD-123FL
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.045g
Electronic Component
1
Electronic Component
BM0263572178
Operating Temperature
55℃~+150℃
Voltage
64.5V
Electronic Component
IEC 61000-4-4;IEC 61000-4-2
Current(Ir)
1uA
Voltage(VBR)
44.4V

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

BORN伯恩半导体SMFJ40CA TVS二极管产品概述

一、产品核心定位与典型应用场景

SMFJ40CA是伯恩半导体推出的双向瞬态抑制二极管(TVS),核心功能是为电子电路提供静电放电(ESD)+浪涌脉冲的双重防护,属于小型化贴片防护器件。其设计目标是在紧凑空间内实现高可靠性过压保护,适用于对体积、防护性能要求较高的领域:

  • 消费电子:智能手机、平板电脑、便携式音频设备的USB、音频接口防护;
  • 汽车电子:车载传感器、中控系统低压电路防护(宽温范围适配车载极端环境);
  • 工业控制:PLC、传感器模块的抗干扰防护;
  • 通信设备:路由器、交换机的接口电路防护。

二、关键电气参数深度解析

SMFJ40CA的参数经过优化,平衡了防护能力与电路兼容性,核心参数及意义如下:

1. 电压类参数

  • 反向截止电压(Vrwm):40V
    正常工作电压下器件保持反向截止,不干扰电路信号传输,确保电路稳定运行;
  • 击穿电压(Vbr):44.4V(典型值)
    当电压超过该阈值时,器件快速导通,将过压“钳位”至安全范围;
  • 钳位电压(Vc):64.5V(@Ipp=3.1A)
    脉冲峰值电流下的最高电压,直接决定后端电路的安全阈值,该值越低防护效果越好。

2. 脉冲防护能力

  • 峰值脉冲电流(Ipp):3.1A
    可承受单次峰值浪涌电流,应对强脉冲干扰;
  • 峰值脉冲功率(Ppp):200W(@10/1000μs波形)
    对应国际标准浪涌波形(上升时间10μs、半峰值时间1000μs),能有效抑制典型浪涌冲击。

3. 漏电流与温度特性

  • 反向漏电流(Ir):1μA(@Vrwm=40V)
    极低漏电流避免影响电路正常功耗,适合低功耗设备;
  • 工作温度范围:-55℃~+150℃
    覆盖工业级与汽车级温度要求,适应极端环境(如车载高温、工业低温场景)。

三、封装设计与可靠性保障

SMFJ40CA采用SOD-123FL贴片封装,具有三大优势:

  • 体积紧凑:封装尺寸约2.0×1.25×1.0mm,适合高密度PCB布局,满足小型化电子设备需求;
  • 焊接可靠:表面贴装工艺兼容性好,可通过回流焊、波峰焊实现稳定焊接,降低虚焊风险;
  • 抗冲击设计:封装结构兼顾散热与机械应力,确保脉冲冲击下的长期可靠性。

四、符合的国际标准与认证

产品严格遵循电磁兼容(EMC)核心标准,确保防护性能达标:

  • IEC 61000-4-2:静电放电防护,满足人体放电模型(HBM)、机器放电模型(MM)等ESD要求;
  • IEC 61000-4-4:电快速瞬变脉冲群(EFT)防护,抑制快速脉冲干扰对电路的误触发或损坏。

五、品牌与应用优势总结

伯恩半导体(BORN)作为国内知名半导体厂商,SMFJ40CA继承了品牌可靠性优势:

  1. 双向防护简化设计:无需区分正负极,电路布线更灵活,降低设计复杂度;
  2. 高性价比:小封装下实现200W脉冲功率,平衡性能与成本;
  3. 宽温适配:-55~150℃覆盖汽车、工业等严苛场景,无需额外降额;
  4. 低功耗兼容:1μA漏电流不影响电池供电设备的续航。

SMFJ40CA凭借紧凑封装、双向防护、宽温特性,成为电子设备接口、敏感电路过压保护的优选器件,可有效提升电路抗干扰能力与可靠性。

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