WMSIC Electronic Components

RUILON SMBJ43CA

ModelSMBJ43CA
PackageSMB(DO-214AA)
BrandRUILON
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
RUILON SMBJ43CA
Type
RUILON
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
SMBJ43CA
Electronic Component
1
Package
SMB(DO-214AA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.232g
Electronic Component
1
Electronic Component
BM0265279345
Operating Temperature
55℃~+150℃
Voltage
69.4V
Electronic Component
IEC 61000-4-4;IEC 61000-4-2
Current(Ir)
1uA
Voltage(VBR)
54.9V

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

SMBJ43CA(RUILON)瞬态抑制二极管产品概述

SMBJ43CA是瑞隆源(RUILON)推出的双向瞬态抑制二极管(TVS),采用SMB(DO-214AA)表面贴装封装,专为电子设备的瞬态过压防护设计,可有效抑制静电放电(ESD)、电快速瞬变脉冲群(EFT)等干扰,保障电路稳定运行。

一、产品基本信息

  • 品牌型号:RUILON(瑞隆源)SMBJ43CA
  • 产品类型:双向瞬态抑制二极管(TVS)
  • 封装形式:SMB(DO-214AA),表面贴装结构,体积紧凑
  • 核心功能:吸收瞬态过压,钳位电压至安全范围,保护后级电路

二、核心电气参数详解

SMBJ43CA的电气参数针对瞬态防护场景优化,关键参数及意义如下:

  1. 反向截止电压(Vrwm):43V
    器件反向截止时的最大持续工作电压,此时处于高阻态,仅存在微小漏电流,不影响电路正常工作。
  2. 击穿电压(Vbr):54.9V
    反向电压超过该值时,器件进入雪崩击穿状态,快速导通泄放瞬态电流,是实现防护的核心机制。
  3. 钳位电压(Vc):69.4V
    器件导通后限制的最高电压(峰值脉冲下测得),确保后级电路电压不超安全阈值。
  4. 峰值脉冲电流(Ipp):8.6A
    10/1000us波形下可承受的最大峰值脉冲电流,反映瞬态电流泄放能力。
  5. 峰值脉冲功率(Ppp):600W(10/1000us波形)
    衡量防护能力的核心指标,10/1000us波形模拟实际环境中的瞬态干扰(如雷击、开关浪涌)。
  6. 反向漏电流(Ir):1uA
    反向截止时的漏电流,数值极小,说明截止性能优异,无额外功耗或发热。

三、封装与典型应用场景

SMB(DO-214AA)封装具有体积小、易贴装特点,尺寸约3.5×2.5×1.5mm,兼容自动化生产,适合小型化设备。

典型应用场景:

  1. 消费电子:手机、平板、智能穿戴的电源/信号端口防护;
  2. 通信设备:路由器、交换机、基站的接口瞬态防护;
  3. 工业控制:PLC、传感器、变频器的过压防护;
  4. 车载电子:部分汽车模块(如仪表盘、传感器)的温度适应性防护(工作温度覆盖-55~150℃)。

四、防护性能与标准认证

SMBJ43CA符合IEC 61000-4-2(ESD防护) 和 IEC 61000-4-4(EFT防护) 标准,可应对:

  • 静电放电:人体接触(±8kV)、空气(±15kV)放电的瞬态过压;
  • 电快速瞬变脉冲群:开关操作、雷电感应产生的快速脉冲干扰(±2kV/5kHz)。

双向极性设计无需区分正负极,可直接用于电源、差分信号等双向防护电路,简化设计。

五、工作环境与可靠性

SMBJ43CA的可靠性满足多数场景需求:

  • 温度范围:-55℃+150℃,覆盖工业级(-4085℃)及高温环境(如汽车舱内);
  • 稳定性:全温区反向漏电流低、击穿电压变化小,防护性能一致;
  • 抗冲击:600W峰值脉冲功率可承受多次瞬态冲击,无性能衰减(符合脉冲重复频率要求)。

总结:SMBJ43CA凭借紧凑封装、宽温范围、优异瞬态防护能力,是消费电子、通信、工业等领域常用的过压防护器件,性价比突出。

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