WMSIC Electronic Components

Littelfuse TPSMB30CA-VR TPSMB30CA

ModelTPSMB30CA-VR
PackageDO-214AA
BrandLittelfuse
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
Littelfuse TPSMB30CA-VR
Type
LITTELFUSE
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LITTELFUSE
Electronic Component
TPSMB30CA-VR
Electronic Component
1
Package
DO-214AA
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.268g
Electronic Component
1
Electronic Component
BM0229356682
Operating Temperature
65℃~+175℃
Voltage
48.4V
Electronic Component
IEC 61000-4-4;IEC 61000-4-2
Current(Ir)
1uA
Voltage(VBR)
33.3V

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

TPSMB30CA-VR 产品概述

一、产品简述

TPSMB30CA-VR 是 Littelfuse(美国力特)推出的一款双向瞬态电压抑制二极管(TVS),封装为 DO-214AA(SMB),提供对瞬态过电压和静电放电的高效保护。其标称反向工作电压 Vrwm 为 30V,能在汽车和工业环境中为电源线、接口线及敏感器件提供可靠的浪涌防护。

二、主要电气参数

  • 类型:双向 TVS 二极管(Bi-Dir)
  • 反向工作电压(Vrwm):30 V
  • 击穿电压(Vbr,典型):33.3 V
  • 钳位电压(Vc,典型):48.4 V(在峰值脉冲电流条件下)
  • 峰值脉冲功率(Ppp):600 W(10/1000 μs 波形)
  • 峰值脉冲电流(Ipp):12.4 A(对应 Ppp)
  • 反向漏电流(Ir):约 1 μA(在 Vrwm 条件下)
  • 工作温度:-65 ℃ ~ +175 ℃
  • 极性:双向
  • 封装:DO-214AA(SMB),2 引脚

三、关键特性与优势

  • 高能量吸收能力:600 W(10/1000 μs)峰值功率与 12.4 A 峰值电流,使其可应对典型的车辆启动浪涌、开关瞬态和雷击感应脉冲。
  • 双向保护:对正负极性瞬态均提供对称钳位,适合交流耦合或需要双向保护的线路。
  • 宽工作温度范围:-65 ℃ 至 +175 ℃,满足汽车级和严苛工业环境的高温低温可靠性要求。
  • 低漏电流:约 1 μA,利于低功耗系统和待机电路应用。
  • 封装优势:SMB(DO-214AA)封装兼顾功率处理与 PCB 布局便利性,适合自动贴装生产。

四、典型应用场景

  • 汽车电源总线(12V/24V 系统的浪涌和ESD防护)
  • 车载电子控制单元(ECU)输入输出保护
  • 开关电源、DC-DC 转换器输入端防护
  • 通信接口与传感器线路的瞬态抑制(需按信号特性评估是否需双向器件)
  • 工业设备、仪表与控制系统中的浪涌与静电防护

五、布局与使用建议

  • 尽量将 TVS 器件放置在需要保护的引脚或接头的最靠近处,缩短 PCB 引线以减小寄生电感,从而提高钳位效果。
  • 对于高能量冲击,建议配合熔断器、PTC 或限流电阻使用,以避免器件在极端事件下损坏并保护下游电路。
  • 关注热管理与焊盘设计,合理的焊盘和铜箔有助于散热并提升重复冲击承受能力。
  • 在高频或敏感信号线路使用前,评估双向 TVS 的结电容对信号完整性的影响,必要时选择专门的低电容保护器件。

六、可靠性与合规性

TPSMB30CA-VR 设计符合汽车和工业级应用对温度及抗冲击的要求。器件对电快速瞬变(EFT)和静电放电(ESD)具有良好防护能力,满足 IEC 61000-4-4(电快速瞬变)与 IEC 61000-4-2(静电放电)相关抗扰度规范,适合在要求抗电磁干扰的系统中部署。

总结:TPSMB30CA-VR 以其 30V 反向工作电压、600W 冲击功率、双向保护和宽温度范围,提供了对汽车与工业电子系统关键线路的高可靠、低漏电瞬态保护解决方案。在实际应用中,通过合理的 PCB 布局和配套保护元件,可获得长期稳定的防护效果。

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