WMSIC Electronic Components

YANGJIE 1N4937

Model1N4937
PackageDO-41
BrandYANGJIE
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

13 specifications

Core information

Product name
YANGJIE 1N4937
Type
DO-41
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
YANGJIE
Electronic Component
1N4937
Electronic Component
1
Package
DO-41
Electronic Component
0.3g
Electronic Component
1
Electronic Component
BM0229463316
Electronic Component
Electronic Component
Electronic Component
5000

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

1N4937 产品概述

一、产品简介

1N4937 是一款独立式快恢复(Fast Recovery)整流二极管,常用于开关电源、功率整流与钳位场合。该器件由扬杰(YANGJIE)生产,封装为常见的 DO-41 轴向引线封装,便于穿孔安装与手工或波峰焊接。典型电气参数包括:正向压降 Vf = 1.2V @ 1A,直流反向耐压 Vr = 600V,额定整流电流 1A,反向恢复时间 Trr ≈ 150ns,适合中高压、较高速开关环境使用。

二、主要特性

  • 高电压耐受:直流反向耐压 600V,适合离线电源或高压整流场合。
  • 快速恢复:典型反向恢复时间 150ns,比一般慢恢复二极管切换损耗更低,有助于提高转换效率并减少开关损耗。
  • 低反向泄漏:反向电流 Ir = 2.5µA @ 600V,减少高压待机时的漏电损耗。
  • 中等正向压降:1.2V @ 1A,正向功耗适中,需在热设计时考虑。
  • 瞬态能力:非重复峰值浪涌电流 Ifsm = 30A(短时峰值),用于承受开机或故障瞬态冲击。
  • 宽温度范围:结温工作范围 -55°C ~ +150°C,适合工业级环境。

三、典型应用场景

  • 开关电源(SMPS)中的输出或回收整流。
  • 反激/正激电源的钳位与续流二极管。
  • 工业高压整流、功率因数校正电路中的高压路径。
  • 逆变器与电机驱动的保护回路。
  • 需要在高压下兼顾较快开关特性的通用整流场合。

四、电气与热设计要点

  • 额定整流电流 1A,若长期工作接近该值,应留有裕量并做好散热(轴向 DO-41 封装散热主要通过管体与引线传导)。
  • 正向压降 1.2V 在高电流下造成的功耗 P = Vf × I 需要在电路热预算中计算并考虑散热路径。
  • 反向恢复时间 150ns 在高频开关时会产生恢复电流峰值和能量损耗,必要时可配合RC缓冲或采用更快的肖特基二极管替代以降低开关损耗。
  • Ifsm = 30A 为非重复峰值浪涌能力,适用于短时冲击,但不可作为长期过载依据。
  • 在高压工作时注意爬电距离与绝缘设计,保持合适的引线间距和封装固定。

五、封装与安装

  • 封装:DO-41 轴向玻璃或环氧封装,便于穿孔安装和维修更换。
  • 安装建议:避免在高温区直接靠近热源进行焊接,焊接时采用合适的焊接工艺以免损伤器件;装配时保持良好机械支撑以减少振动对引线的应力。
  • 贮存与运输:避免潮湿、高温及强烈机械冲击,必要时按元器件防潮要求处理。

六、选型与使用建议

  • 若目标电路开关频率较高(数百 kHz 以上)并需最低正向压降或更短恢复时间,可考虑肖特基或更高速恢复二极管替代。
  • 对于 1A 连续工作且要求高耐压与较低反向泄漏的场合,1N4937 是性价比较高的选择。
  • 在并联使用以提升电流能力时,应注意电流均分问题并匹配热阻与封装条件。
  • 设计保护回路(如RC缓冲、TVS)以限制尖峰电压和抑制反向恢复导致的过冲。

七、可靠性与测试要点

  • 建议在来料检验中测试正向压降 Vf@1A、反向电流 Ir@Vr、以及 Trr 测试以验证器件开关行为。
  • 做好高温存储和温循环测试以验证焊接与封装可靠性;在实际应用中建议留取一定的安全余量以提高长期可靠性。

总结:YANGJIE(扬杰)生产的 1N4937(DO-41)是一款面向高压整流与中速开关场合的快恢复二极管,具备 600V 耐压、1A 整流能力、150ns 恢复时间和较低反向泄漏的组合特性,适合多种工业和消费类电源应用。在使用时应综合考虑散热、开关损耗与电路保护措施以获得最佳性能与可靠性。

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