WMSIC Electronic Components

Littelfuse TPSMA6L28A

ModelTPSMA6L28A
PackageDO-221AC
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

20 specifications

Core information

Product name
Littelfuse TPSMA6L28A
Type
LITTELFUSE
Unit
Electronic Component
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
LITTELFUSE
Electronic Component
TPSMA6L28A
Electronic Component
1
Package
DO-221AC
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.061g
Electronic Component
1
Electronic Component
BM0229304938
Operating Temperature
65℃~+150℃
Voltage
45.4V
Electronic Component
IEC 61000-4-4;IEC 61000-4-2
Current(Ir)
1uA

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

TPSMA6L28A 产品概述

一、产品简介

TPSMA6L28A 是 Littelfuse(美国力特)推出的一款汽车级单向瞬态抑制二极管(TVS),用于抑制瞬态过电压和浪涌事件,保护车载电子、电源线和通信接口不被高能瞬变损坏。器件遵循 AEC‑Q101 汽车级可靠性要求,并满足常见的电磁兼容抗扰度标准(IEC 61000‑4‑2、IEC 61000‑4‑4),适合严苛环境下长期使用。

二、主要参数

  • 钳位电压(VC):45.4 V(在指定测试条件下)
  • 击穿电压(VBR):31.1 V
  • 反向额定工作电压(Vrwm):28 V
  • 峰值脉冲功率(Ppp):600 W(脉冲测试条件)
  • 峰值脉冲电流(Ipp):13.3 A
  • 反向漏电流(IR):1 μA(常温)
  • 极性:单向(适用于直流系统)
  • 工作温度范围:-65 ℃ 至 +150 ℃
  • 封装:2 引脚 DO‑221AC
  • 防护/认证:AEC‑Q101(汽车级)、IEC 61000‑4‑2(ESD)、IEC 61000‑4‑4(EFT)

三、典型应用场景

  • 汽车电子系统:ECU、车身控制模块、车灯驱动等电源与信号线防护。
  • 通信接口保护:CAN/LIN 总线、传感器信号线、USB/数据端口的瞬态抑制。
  • 电源分配与电池管理:电池反接、负载开关产生的浪涌吸收与钳位。
  • 工业设备和仪表:需要满足高能脉冲和静电放电保护的堆栈。

四、封装与可靠性

DO‑221AC 两引脚封装适合通孔安装,便于机械固定与散热。器件经过汽车级认证(AEC‑Q101),工作温度范围宽,适合高温、低温及振动环境。设计时应关注封装导热路径,采用较大铜面积或散热片以改善能量耗散能力,延长在连续或重复浪涌场合下的寿命。

五、安装与使用建议

  • 放置位置:尽量靠近被保护的连接器或器件,缩短引线与回路环路,降低寄生电感。
  • 走线与接地:保护器到地的回流路径应尽可能短、宽,使用多层板时优先连接到参考地或车体地的大铜箔。
  • 热管理:在持续或重复能量事件下,应考虑热耗散与器件温升,必要时增加散热铜箔或使用多器件并联(需按制造商指导)。
  • 脉冲类型:对长时程(如 10/1000 μs)或特殊波形的能量吸收能力需参考完整数据手册,不同脉冲波形下的钳位与能量能力差异显著。
  • 极性注意:本器件为单向 TVS,适合直流方向的正向抑制;用于交流或双向场合需选用双向型号。

六、选型要点

  • 确认系统工作电压与 Vrwm(28 V)匹配,避免在常态下接近或超过反向额定电压。
  • 根据系统能量与脉冲波形选择合适的 Ppp/能量级别,必要时采用更高功率器件或并联方案。
  • 若应用涉及双向浪涌(交流信号或需双向保护),请选择相应的双向 TVS。
  • 对于严格的汽车认证与长期可靠性要求,优先选择带有 AEC‑Q101 认证与完整可靠性数据的型号。

总结:TPSMA6L28A 提供 28 V 额定工作电压下高达 600 W 的瞬态抑制能力,单向结构、低漏电、宽温度范围和汽车级认证使其成为车用电源与信号线防护的理想选择。使用时应注意布线、散热与脉冲波形匹配,参考完整数据手册以确保在具体工作条件下获得最优保护效果。

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