WMSIC Electronic Components

Jingdao Microelectronics BAV21W

ModelBAV21W
PackageSOD-123FL
BrandElectronic
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+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Electronic BAV21W
Type
Jingdao Microelectronics
Minimum package
3000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
BAV21W
Electronic Component
1
Package
SOD-123FL
Electronic Component
Switch Diode
Electronic Component
0.03g
Electronic Component
1
Electronic Component
BM69416841
Current
250mA
Diode
Electronic Component
Current(Ir)
100nA
(Vf)
1.25V@200mA
Power Dissipation(Pd)
500mW
Electronic Component
55℃~+150℃@(Tj)
Electronic Component
Electronic Component

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

BAV21W开关二极管产品概述

一、产品基本定位与品牌背景

BAV21W是晶导微电子推出的独立式高速开关二极管,针对中小功率高频切换、低功耗整流及过压防护场景优化设计。作为国产高性能开关管代表,其兼顾“高速响应”与“低损耗”特性,采用小型化表面贴装封装,适用于消费电子、工业控制、通信等多领域,可替代同类进口器件。

二、核心电性能参数解析

BAV21W的关键参数围绕“高速开关”与“低功耗”核心需求设计,具体表现为:

  1. 正向导通特性:在200mA典型工作电流下,正向压降稳定在1.25V——这一参数平衡了导通损耗与开关速度,既避免普通低速二极管的损耗过高,又满足中等电流输出需求(如便携设备电源切换)。
  2. 反向耐压与漏电流:直流反向耐压达250V,覆盖多数中低压应用场景;在250V反向电压下,反向漏电流仅100nA,关断状态下反向损耗极小,有效降低电路待机功耗(适合低功耗设计场景)。
  3. 高速开关性能:反向恢复时间(Trr)仅50ns,是其核心优势——可在极短时间内完成“导通→关断”切换,避免因恢复时间过长导致的信号失真或效率下降,支持几十MHz频率的信号处理。
  4. 功率与温度适应性:最大耗散功率500mW,满足中小功率应用;工作结温范围-55℃~+150℃,可适应工业现场低温、高温工况,或汽车电子的温度波动。

三、封装形式与可靠性设计

BAV21W采用SOD-123FL封装,属于小型化表面贴装无引线封装,优势显著:

  • 空间效率:典型尺寸约2.5mm×1.25mm×1.0mm,节省PCB空间,适合智能手机、智能穿戴等高密度布局;
  • 贴装兼容性:无引线设计适配自动化贴装设备,降低生产难度与成本;
  • 可靠性:封装耐焊接高温(≥260℃回流焊),长期使用不易开裂,符合RoHS环保标准;
  • 散热性能:封装结构利于热量传递,配合500mW耗散功率,满足短期过载需求。

四、典型应用场景

结合参数特点,BAV21W的核心应用场景包括:

  1. 高速信号切换:如USB、RS485通信接口的收发器切换,射频电路信号选通,利用50ns响应时间避免信号延迟;
  2. 中小功率整流:小型开关电源次级整流、电池充电辅助整流,250mA电流与250V耐压覆盖低功率电源需求;
  3. 过压防护:作为反向过压保护元件,抵御一定程度浪涌,保护后级电路(如传感器、MCU);
  4. 工业控制:PLC输入输出接口、传感器信号处理,宽温范围适应现场温度变化;
  5. 便携电子:智能手机电源管理模块、智能手表信号切换,小型化封装适配内部空间。

五、产品应用优势总结

BAV21W在同类产品中具有综合竞争优势:

  • 性能平衡:高速开关(50ns)与低漏电流(100nA)兼顾,无“顾此失彼”;
  • 环境适应性:宽结温范围覆盖极端工况,可靠性高于普通消费级器件;
  • 成本可控:晶导微电子量产能力保障性价比,适合批量应用;
  • 替代兼容性:封装与参数匹配同类进口器件(如BAV21系列),可直接替换。

BAV21W凭借稳定的性能、小型化封装与宽温适应性,成为中小功率高速开关/整流场景的优选器件,可满足多领域的实际应用需求。

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