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YANGJIE MUR420
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
13
specifications
Core information
- Product name
- YANGJIE MUR420
- Type
- DO-27
- Minimum package
- 1250 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- YANGJIE
- Electronic Component
- MUR420
- Electronic Component
- 1
- Package
- DO-27
- Electronic Component
- 1.09g
- Electronic Component
- 1
- Electronic Component
- BM0230005024
- Electronic Component
- Electronic Component
- Electronic Component
- 1250
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MUR420 快恢复/高效率二极管 产品概述
一、核心特性
MUR420 为独立式快恢复整流二极管，品牌：YANGJIE（扬杰），封装为 DO-27，专为开关电源与高频整流场合设计。主要电气特性如下：
- 正向压降 Vf = 890 mV @ IF = 4 A（低压降设计，有利于提高整机效率）；
- 直流反向耐压 VR = 200 V；
- 连续整流电流 IF(AV) = 4 A；
- 反向电流 IR = 5 μA @ VR = 200 V（低漏泄，减小待机损耗）；
- 反向恢复时间 Trr ≈ 25 ns（快恢复，提高开关频率兼容性）；
- 非重复峰值浪涌电流 Ifsm = 125 A；
- 工作结温范围 Tj = -55 ℃ 至 +150 ℃。
二、电气参数与应用意义
MUR420 的 200V 反向耐压和 4A 连续整流能力，使其适用于多数中低功率开关电源、适配器与整流场合。890 mV 的典型正向压降在 4A 工作点下能显著降低导通损耗；25 ns 的反向恢复时间保证在高开关频率下仍能维持较低的开关损耗与电磁干扰（相较于普通慢恢复二极管，开关损耗和反激尖峰更小）。
三、热特性与可靠性
器件允许的结温范围宽（-55 ℃ ~ +150 ℃），适应工业级温度要求。实际使用中应关注结-壳与结-环境热阻，4A 连续工作时需设计良好的散热路径。非重复峰值浪涌 125A 可承受开机/故障瞬态，但不宜作为长期过载使用。长期可靠性依赖于正确的散热、避免频繁的大电流浪涌和受潮保存。
四、典型应用场景
- 开关电源输出/续流整流（SMPS 输出二极管、同步替代方案）；
- 功率适配器、LED 驱动电源整流；
- 逆变器/变频器的自由轮回二极管；
- 交流桥式整流中的单个整流元件（需并联或并联模块时注意均流）；
- 反向保护、电气钳位与吸收电路中快速限幅元件。
五、设计与使用建议
- 并联使用时需保证电流均匀分配（串联小阻或独立器件并联并不总能保证均流）；
- 高频开关应用中应与合适的吸收/RC 网络配合，以抑制反冲尖峰；
- 在靠近开关器件或感性负载处布局，缩短走线以减少寄生电感；
- 核对焊接和热循环规范（遵循厂家焊接工艺），避免超温或机械应力导致性能退化；
- 测试时关注 Vf、Trr 与 IR 是否满足设计裕度。
六、封装与订购信息
封装：DO-27（轴向引线，适合通孔插件或波峰/手工焊接组装）；
典型型号标识：YANGJIE MUR420 DO-27。购买时建议向供应商确认批次、出厂测试数据（Vf 测试点、Trr 曲线、IR 测试值）以及是否符合所需的品质与环境标准（如需 RoHS/无铅认证应提前确认）。
总结：MUR420 以其低正向压降、快恢复时间与 200V 耐压在中低功率、高频整流与续流场景中表现均衡，是替代慢恢复二极管以提升效率和减小开关损耗的实用选择。
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