WMSIC Electronic Components

Jingdao Microelectronics BAV19W

ModelBAV19W
PackageSOD-123
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Electronic BAV19W
Type
Jingdao Microelectronics
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
BAV19W
Electronic Component
1
Package
SOD-123
Electronic Component
Switch Diode
Electronic Component
0.036g
Electronic Component
1
Electronic Component
BM0265390935
Current
250mA
Diode
Electronic Component
Current(Ir)
100nA@120V
(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.

BAV19W 高速开关二极管产品概述

BAV19W是晶导微电子推出的独立式高速开关二极管,采用SOD-123小型表面贴装封装,凭借短反向恢复时间、低漏电流、宽温适应性等核心特性,广泛应用于高频开关、整流及信号调理场景,是消费电子、汽车电子及工业控制领域的高性价比器件。

一、核心电气参数详解

BAV19W的电气性能围绕“高速切换”与“低损耗”设计,关键参数如下:

1. 正向导通特性

  • 正向压降(Vf):1.25V(典型值,测试条件:200mA正向电流)—— 中等电流下保持低损耗,减少电路发热;
  • 最大整流电流(IF):250mA(直流)—— 可稳定承载250mA以内的持续正向电流,满足中小功率需求;
  • 最大耗散功率(Pd):500mW—— 实际功耗需控制在此范围内,避免器件过热损坏。

2. 反向截止特性

  • 直流反向耐压(Vr):120V—— 可承受120V以内反向电压,防止反向击穿;
  • 反向漏电流(Ir):100nA(典型值,测试条件:120V反向电压)—— 漏电流极低,反向截止性能优异,降低待机功耗;
  • 反向恢复时间(Trr):50ns(典型值)—— 高速开关核心指标,短恢复时间可减少高频切换损耗,适配10MHz以下电路。

3. 温度适应性

  • 工作结温范围(Tj):-55℃~+150℃—— 覆盖工业级与汽车级环境,可在极端温度下稳定工作。

二、封装与品牌背景

1. SOD-123封装优势

BAV19W采用SOD-123小型表面贴装封装,尺寸约2.9mm×1.6mm×1.0mm,具备:

  • 体积小:节省PCB空间,适合高密度电路设计;
  • 贴装便捷:兼容回流焊、波峰焊工艺,生产效率高;
  • 散热性:通过PCB铜箔可有效导出结热,配合500mW功率限制满足中小功率需求。

2. 晶导微电子品牌说明

晶导微电子是国内功率半导体领域的专业厂商,产品覆盖二极管、三极管、MOS管等,BAV19W遵循工业级标准,品质可靠,可替代同类进口器件。

三、关键特性与技术优势

BAV19W的核心优势体现在:

  1. 高速开关性能:50ns反向恢复时间,快速完成“导通-截止”切换,降低高频电路损耗;
  2. 低损耗设计:1.25V正向压降+100nA反向漏电流,减少正向导通与反向待机损耗;
  3. 宽温适应性:-55℃~+150℃结温范围,适配汽车电子、工业控制等极端环境;
  4. 高可靠性:低漏电流、高反向耐压,配合SOD-123封装稳定性,长期工作故障率低;
  5. 成本效益:国产替代进口,性价比高,适合批量应用。

四、典型应用场景

BAV19W适用于以下场景:

  1. 开关电源续流:DC-DC转换器、AC-DC适配器的续流回路,利用高速特性降低损耗;
  2. 高频信号整流:射频电路小信号整流、通信设备信号调理;
  3. 电池管理(BMS):反向截止二极管,防止电池反向放电,保护电路;
  4. 汽车电子:车载充电器、仪表盘电路,适配汽车级温度;
  5. 消费电子:手机、平板、智能穿戴的充电电路、电源管理模块;
  6. 工业控制:传感器信号处理、小型继电器驱动电路。

五、选型与使用注意事项

为保证可靠工作,需注意:

  1. 电流限制:持续正向电流≤250mA,峰值电流需控制占空比(短暂可承受~1A);
  2. 电压限制:反向电压≤120V,避免击穿;
  3. 温度控制:结温≤150℃,高功耗场景需增加PCB散热铜箔;
  4. 焊接工艺:回流焊峰值温度≤260℃(时间≤10秒),避免损坏器件;
  5. 静电防护:二极管为ESD敏感器件,生产/使用需采取防护措施。

总结:BAV19W以高速切换、低损耗、宽温适应性及小型封装,成为中小功率高频电路的理想选择,尤其适合对成本敏感且需要高可靠性的应用场景。

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