WMSIC Electronic Components

Littelfuse SMAJ20A

Littelfuse SMAJ20A
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Product image

ModelSMAJ20A
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 Electronic Component

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Technical data

Product details

20 specifications

Core information

Product name
Littelfuse SMAJ20A
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
SMAJ20A
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
BM0265802940
Operating Temperature
65℃~+150℃
Voltage
32.4V
Electronic Component
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.

SMAJ20A 产品概述

1. 引言

SMAJ20A是一款高性能的齐纳二极管，专为电路的瞬态过电压保护设计。它的主要应用领域包括电源保护、信号线保护以及各种电子设备中的ESD（静电放电）防护。由知名品牌Littelfuse（美国力特）生产，该型号采用表面贴装型DO-214AC（SMA）封装，具备优异的热稳定性和可靠性，广泛应用于消费电子和工业设备中。

2. 主要特点

  • 齐纳类型：SMAJ20A属于齐纳二极管，能够在反向击穿时有效保护后续电路，防止电压超过其额定值。
  • 电压范围：该型号的反向断态电压为20V，最小击穿电压为22.2V，确保在正常工作电压下能够发挥稳定的保护效能。
  • 笼统电压钳位：在不同的峰值电流（Ipp）条件下，SMAJ20A的钳位电压最高可达到32.4V，这在面对瞬态过电压时，能够快速将多余的电压导入地，从而保护后端电路。
  • 脉冲电流承受能力：该二极管能够承受最大12.3A的峰值脉冲电流（按10/1000µs脉冲波形测试），其峰值脉冲功率可达400W，这使其在处理瞬态电压时表现出色。
  • 广泛的工作温度范围：SMAJ20A的工作温度能够在-65°C至150°C之间波动，适用于高温、低温环境下的稳定工作，更加适合各种严苛的应用环境。

3. 封装与安装

SMAJ20A采用DO-214AC（SMA）封装，表面贴装设计使其更易于自动化生产，符合广泛使用的表面安装技术（SMT）。小巧的尺寸与高效的热传导特性，使其具有更高的布局灵活性和整体系统的集成度。

4. 应用场景

SMAJ20A广泛应用于：

  • 消费电子：用于智能手机、平板电脑、个人计算机等设备的电源线和信号线保护，防止诸如电源浪涌、静电放电等带来的损害。
  • 工业设备：在PLC控制系统、传感器和仪器仪表中，为信号线提供过电压保护，确保设备的安全稳定运行。
  • 汽车电子：在汽车电路中，用于防止电源瞬态电压对控制单元和电子元件的影响，增加了耐用性和安全性。
  • 通信设备：在网络设备、路由器和基站中保护信号链路，降低因电压波动导致的信号干扰或设备故障。

5. 性能优势

  • 高可靠性：Littelfuse作为行业领导者，以其卓越的产品质量和稳定性而著称，SMAJ20A经过严格测试，具有长寿命和高可靠性。
  • 经济性：在满足电路保护需求的前提下，SMAJ20A的成本效益相对较高，是设计师在选择过电压保护元件时的优选方案。
  • 易于整合：小巧的封装和高效的电气性能，便于在各种电路设计中进行集成，无需额外的散热处理。

6. 结论

总而言之，SMAJ20A二极管是一款集高性能、高可靠性和经济性于一体的电路保护元件，能够有效应对各种瞬态过电压挑战。无论是在消费电子、工业设备、汽车电子还是通信设备中，SMAJ20A都是理想的选择。选择Littelfuse的SMAJ20A，确保您的电路在多种应用场合下的安全与稳定运作。

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