WMSIC Electronic Components

LGE 1N5399

Model1N5399
PackageDO-15
BrandLGE
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LGE 1N5399
Type
LGE
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LGE
Electronic Component
1N5399
Electronic Component
1
Package
DO-15
Electronic Component
General Purpose Diode
Electronic Component
0.371g
Electronic Component
1
Electronic Component
BM0230873939
Current
1.5A
Diode
Electronic Component
Current(Ir)
5uA@1kV
Electronic Component
65℃~+150℃
Electronic Component
Electronic Component
Electronic Component
3000

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

1N5399 通用整流二极管(LGE·鲁光)产品概述

一、产品概述

1N5399 是鲁光(LGE)推出的一款独立式通用整流二极管,适用于中高电压整流与阻断场合。器件采用 DO-15 轴向封装,结构稳固、便于手工装配与波峰/回流焊接。该型号在高达 1kV 的反向电压下仍保持极低的反向漏流,正向压降在中大电流下表现平衡,适合线性电源、高压直流供电与保护电路等场景。

二、主要电气参数

  • 封装:DO-15(轴向玻璃/环氧封装)
  • 额定整流电流:1.5 A(连续)
  • 峰逆向耐压 Vr:1000 V(1 kV)
  • 正向压降 Vf:约 1.1 V @ 1.5 A(典型值)
  • 反向漏流 Ir:约 5 μA @ 1 kV(典型值)

由此可见,1N5399 在高压工况下具有良好的阻断能力和低漏流特性;在 1.5 A 工作点时正向功耗约为 1.65 W(P = Vf × I),需注意散热管理。

三、封装与热管理要点

DO-15 轴向封装体积小、热阻相对较高,器件的结温对寿命和参数影响较大。实务建议:

  • 保持良好通风或在必要时提供散热体/散热翅片;
  • 在高平均功率或狭小封装空间中考虑并联多只或选用更大功率封装;
  • 遵循焊接工艺温度限制并避免过长高温暴露以保护环氧/玻璃封装和焊点可靠性。

四、典型应用场景

  • 交流整流与高压直流电源(整流桥或单枚整流)
  • 高压阻断与逆向保护(如高压电容充放电回路)
  • 仪器仪表、HV 电源模块、医用/工业电源(非高频开关主整流)
  • 作为普通电源滤波与保护元件,特别是在要求高耐压且漏流低的场合

五、使用与安装建议

  • 建议在额定电流下进行热仿真与结温评估,必要时留有 >20% 的电流余量;
  • 避免在高频开关电源的主开关路径上使用本类慢恢复整流二极管,因反向恢复时间较长可能引入开关损耗与电磁干扰;
  • 在高浪涌环境下,考虑配合浪涌吸收器件或选用具有高峰值脉冲能力的型号以保证可靠性;
  • 存储与装配时避免受潮、强震动与机械弯折导线,保持器件良好接地/绝缘距离以适应 1kV 电压等级。

六、对比与选型建议

  • 与肖特基二极管相比:Vf 更高但耐压远优于常见高压肖特基,适合高压场合;
  • 与快速恢复/超快恢复二极管相比:1N5399 更适合工频或低频整流,非高频开关路径;
  • 若工作频率较高或需更低 Vf,可考虑低压大电流肖特基或专用快恢复器件;若需更高电流能力,选择更大封装或并联方案。

七、可靠性与测试要点

  • 关键测试:高压耐压(Hi-Pot)、反向漏流测定、正向压降与温度系数测试;
  • 可靠性验证建议包括温度循环、湿热试验与长期负载老化测试,尤其在高电压/高温环境下;
  • 生产端应关注焊接工艺一致性与轴向应力控制,避免引发封装裂纹或焊点失效。

八、总结

1N5399(LGE/鲁光,DO-15)是一款面向中高电压、低漏流需求的通用整流二极管,额定 1kV 反向耐压与 1.5A 连续整流能力使其在高压直流供电与保护电路中具有明显优势。选型时需兼顾散热、工作频率与浪涌要求,合理的热设计与测试验证可确保长期稳定可靠运行。若需替代或扩展应用,可根据电压、频率与功率要求选择相应的快恢复或肖特基器件。

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