WMSIC Electronic Components

Littelfuse AQ05-02HTG AQ05

ModelAQ05-02HTG
PackageSOT-23-3
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 24+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
Littelfuse AQ05-02HTG
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
AQ05-02HTG
Electronic Component
1
Package
SOT-23-3
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.047g
Electronic Component
1
Cj- Capacitor
290pF
Electronic Component
BM0257277428
Operating Temperature
40℃~+150℃
Voltage
13V
Electronic Component
IEC 61000-4-4;IEC 61000-4-5;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.

AQ05-02HTG 产品概述

一、产品简介

AQ05-02HTG 是 Littelfuse(美国力特)的一款 SOT-23-3 封装 TVS 二极管阵列,针对 5V 工作电压的瞬态过压与静电放电保护而设计。器件在正常工作电压下具有极低的泄漏电流,同时能在雷击、浪涌和电快速瞬变场景中提供高效的瞬态能量吸收,适用于受限空间的电源和信号防护。

二、主要电气参数

  • 额定反向工作电压 (Vrwm):5V
  • 击穿电压 (Vbr):约 7V
  • 钳位电压 (Vcl):13V(在规定 8/20µs 测试波形下)
  • 峰值脉冲电流 (Ipp):33A @ 8/20µs
  • 峰值脉冲功率 (Ppp):500W @ 8/20µs
  • 反向漏电流 (Ir):1µA(典型,常温)
  • 结电容 (Cj):约 290pF
  • 工作温度范围:-40℃ ~ +150℃
  • 封装:SOT-23-3

三、防护能力与符合标准

AQ05-02HTG 符合常见瞬态干扰测试标准,覆盖以下 IEC 规范:

  • IEC 61000-4-2(静电放电,ESD)
  • IEC 61000-4-4(电快速瞬变脉冲,EFT)
  • IEC 61000-4-5(浪涌,Surge)
    器件在 8/20µs 测试条件下能承受 33A 的峰值脉冲电流和 500W 的瞬态功率,能有效钳位到约 13V,保护下游器件免受过电压损害。

四、典型应用场景

  • 5V 电源总线保护(USB、外设供电)
  • 工业控制与传感接口的瞬态防护
  • 受限空间或板载保护模块,需小型封装且高功率吸收能力的场合
  • 中低速信号线或电源线防护(注意结电容对高速信号的影响)

五、封装与使用建议

SOT-23-3 小型封装利于板面密集布置,但在布局上建议:

  • 将 TVS 靠近被保护引脚或连接器放置,走短且粗的接地回流路径;
  • 使用多点接地或低感抗铜箔,减少感性电压升高;
  • 对于对速度敏感的通信线,注意 290pF 的结电容可能影响信号完整性,必要时选择低电容型号。
    器件宽温度范围和低泄漏特性使其适合工业级长期运行。

六、选型要点与对比提醒

选择 AQ05-02HTG 时,应确认系统最大允许钳位电压(约 13V)与被保护器件耐受电压匹配;若系统对结电容敏感(如高速差分对、高清接口),需评估 290pF 带来的信号衰减或寻求低Cj 替代品。与此同时,其 5V Vrwm 与 7V 击穿设定,适合典型 5V 电源轨的保护需求。

七、小结

AQ05-02HTG 以 Littelfuse 的工艺为基础,在小体积 SOT-23-3 封装中提供了可靠的 5V 级瞬态保护能力。其高峰值脉冲吸收能力、低漏电和宽温度范围使其在工业与消费领域的电源与信号防护中具有较高实用价值。使用时注意结电容对高速信号的影响并优化接地布局,可获得最佳防护效果。

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