WMSIC Electronic Components

DOWO SM24CANB-02HTG SM24CANB

ModelSM24CANB-02HTG
PackageSOT-23
BrandDOWO
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
DOWO SM24CANB-02HTG
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SM24CANB-02HTG
Electronic Component
1
Package
SOT-23
Electronic Component
Electronic Component
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.034g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
30pF
Electronic Component
BM0264866288
Voltage
58V
Electronic Component
IEC 61000-4-4;IEC 61000-4-5;IEC 61000-4-2
Current(Ir)
500nA

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

SM24CANB-02HTG 双向ESD防护器件产品概述

SM24CANB-02HTG是东沃(DOWO)推出的一款双路双向ESD/浪涌防护器件,专为电子线路的过压防护设计,可有效抑制静电放电(ESD)、电快速瞬变脉冲群(EFT)及浪涌脉冲对敏感元器件的损害,适配高密度PCB布局与高速通信接口场景。

一、产品定位与核心价值

该器件聚焦双路信号线路防护,解决单一器件无法同时防护多路信号的痛点,通过紧凑封装实现“一路器件,两路防护”,降低系统BOM成本与布局复杂度。核心价值体现在:

  • 低漏电流+低结电容:不影响线路静态功耗与高速信号完整性;
  • 宽脉冲耐受范围:覆盖ESD、EFT、浪涌等多类电磁干扰;
  • 标准化 compliance:满足工业与汽车电子常用电磁兼容要求。

二、关键电气参数解析

SM24CANB-02HTG的参数设计精准匹配通信接口防护需求,核心参数意义如下:

1. 电压与极性参数

  • 双向极性:可同时防护正负脉冲(如CAN总线的CAN_H/CAN_L正负过压),无需额外反向器件;
  • 反向截止电压(Vrwm=24V):正常工作电压下(如12V汽车系统、24V工业系统)保持高阻态,不干扰线路;
  • 击穿电压(Vbr=28.5V):过压超过28.5V时开始导通,触发防护机制;
  • 钳位电压(Vc=58V):峰值脉冲下将电压钳位至58V以内,远低于后端IC的耐压阈值(通常3.3V/5V系统的IC耐压不超过20V),有效保护敏感器件。

2. 脉冲耐受能力

  • 峰值脉冲电流(Ipp=9A@8/20us):8/20us浪涌波形下可承受9A峰值电流(对应IEC 61000-4-5标准浪涌等级);
  • 峰值脉冲功率(Ppp=420W@8/20us):对应浪涌功率耐受,确保强脉冲下不损坏器件。

3. 寄生与静态参数

  • 反向漏电流(Ir=500nA):低漏电流设计,避免静态功耗增加,适配低功耗设备;
  • 结电容(Cj=30pF):双路结构下的结电容,适配1Mbps-10Mbps速率的通信接口(如CAN、RS485),信号衰减与反射可忽略。

4. 通道数

  • 双路设计:内置2个独立防护通道,可同时防护两路差分信号(如CAN_H/CAN_L)或两路单端信号,节省PCB空间。

三、防护性能与国际标准 compliance

该器件严格遵循三大核心电磁兼容标准,确保在恶劣环境下可靠工作:

  • IEC 61000-4-2(ESD抗扰度):支持接触放电±8kV、空气放电±15kV(行业主流测试等级),可抵御人体静电与设备间静电干扰;
  • IEC 61000-4-4(EFT抗扰度):应对电快速瞬变脉冲群(如开关切换产生的脉冲),防护脉冲重复频率达1MHz;
  • IEC 61000-4-5(浪涌抗扰度):8/20us浪涌波形下耐受9A电流,覆盖电源与信号线路的浪涌防护需求。

四、封装与可靠性设计

  • 封装类型:SOT-23:体积仅约2.9×1.3×1.1mm,适配高密度PCB(如汽车电子控制器、小型工业模块),表面贴装工艺兼容自动化生产;
  • 品牌可靠性:东沃(DOWO)作为国内防护器件主流品牌,产品经过批量可靠性测试(如温度循环、湿度老化),参数一致性与稳定性满足工业级要求。

五、典型应用场景

SM24CANB-02HTG的参数与封装特性,使其适配多类场景:

  1. 汽车电子:CAN总线接口防护(CAN_H/CAN_L双路)、车载传感器信号防护;
  2. 工业控制:PLC通信接口(RS485、CAN)、现场总线节点防护;
  3. 消费电子:便携设备(如智能手表、蓝牙耳机)的接口防护(双路音频/数据接口);
  4. 物联网终端:低功耗物联网节点的信号线路防护(低漏电流适配电池供电)。

综上,SM24CANB-02HTG通过双路设计、低寄生参数与宽脉冲耐受能力,成为通信接口过压防护的高性价比选择,可满足工业、汽车、消费电子等领域的电磁兼容需求。

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