WMSIC Electronic Components

Littelfuse(美国力特) SMAJ40A

Littelfuse(美国力特) SMAJ40A
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Product image

ModelSMAJ40A
PackageDO-214AC(SMA)
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 26+

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Technical data

Product details

20 specifications

Core information

Product name
Littelfuse SMAJ40A
Type
LITTELFUSE
Unit
Electronic Component
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
LITTELFUSE
Electronic Component
SMAJ40A
Electronic Component
1
Package
DO-214AC(SMA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.124g
Electronic Component
1
Electronic Component
BM0000285528
Operating Temperature
65℃~+150℃
Voltage
64.5V
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.

SMAJ40A 产品概述

产品简介

SMAJ40A 是一种高性能的瞬态电压抑制器（TVS）二极管，专为保护敏感电子元件而设计。它具有高峰值脉冲电流处理能力和优异的反向电压特性，能够有效抑制瞬态过电压，避免电路设备因电压尖峰而造成的损坏。这种二极管的封装采用 DO-214AC 扁平型表面贴装（SMA），适合于现代电子电路的应用需求。

主要参数

  • 极性：单向 (Unidirectional)
  • 峰值脉冲电流（10/1000µs）：6.2 A
  • 箝位电压：64.5 V
  • 击穿电压（最小值）：44.4 V
  • 反向关断电压（典型值）：40 V
  • 功率 - 峰值脉冲：400 W
  • 工作温度范围：-55°C ~ 150°C

这些参数使得 SMAJ40A 在面对瞬态电压时能够快速反应并有效保护电路，提高电路的可靠性和稳定性。

应用领域

SMAJ40A 主要应用于多个领域和电子设备中，尤其在需要电源线路保护的场合。常见的应用包括：

  • 消费电子产品：智能手机、平板电脑和其他便携式设备。
  • 工业设备：用于控制系统和自动化设备的电源保护。
  • 通信设备：防止瞬态电压对通信线路和数据传输造成影响。
  • 汽车电子：用于汽车的电气系统，如车载信息娱乐系统和导航系统。
  • 医疗设备：保护关键医疗仪器免受瞬态过电压损害。

性能优势

  1. 快速响应时间：SMAJ40A 能够在瞬态过电压事件发生时迅速进入导通状态，有效限制电压上升，保护后端电路。
  2. 高功率承受能力：其高达 400 W 的峰值功率承受能力确保其在极端情况下依然能够提供有效保护。
  3. 宽工作温度范围：该器件的工作温度范围在 -55°C 到 150°C 之间，使其能够适应各种严苛的环境条件。
  4. 小型化设计：采用表面贴装型的封装，适合现代小型化的电路设计，节省电路板空间。

安装建议

SMAJ40A 的安装方式为表面贴装，可直接用回流焊接装配到电路板上。为了确保最佳性能，建议在设计时考虑PCB布局和接地设计，减少寄生电感和电阻，从而进一步提升抑制效果。

总结

SMAJ40A 是一款高效的瞬态电压抑制器，凭借其卓越的电压保护性能和宽广的应用适用性，成为电子设备设计中不可或缺的保护元件。无论是在消费电子、工业、通信还是汽车领域，SMAJ40A 都能为设计者和用户提供卓越的保护方案，有效延长设备的使用寿命和提高可靠性。

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