WMSIC Electronic Components

YANGJIE 1N5819

Model1N5819
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 Date code within 2 years

Available for RFQ

Technical data

Product details

13 specifications

Core information

Product name
YANGJIE 1N5819
Type
DO-41
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
YANGJIE
Electronic Component
1N5819
Electronic Component
1
Package
DO-41
Electronic Component
0.28g
Electronic Component
1
Electronic Component
BM0230005010
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.

1N5819(YANGJIE 扬杰)产品概述

一、产品简介

1N5819 是一款通用肖特基(Schottky)整流二极管,扬杰(YANGJIE)提供的该型号采用 DO‑41 轴向穿孔封装,面向整流、保护与开关电源等应用。其主要特点是正向压降较低、回复速度快、抗浪涌能力良好,适合中等电流的电源与保护电路。

主要标称参数(按提供数据):

  • 二极管数量:1 个独立式
  • 正向压降 Vf:600 mV @ 1 A
  • 直流反向耐压 Vr:40 V
  • 额定整流电流 If(AV):1 A
  • 反向漏电流 Ir:200 μA @ 40 V
  • 非重复峰值浪涌电流 Ifsm:30 A
  • 工作结温范围:-55 ℃ ~ +125 ℃
  • 封装:DO‑41(轴向)

二、关键电气特性解读

  • 正向压降(Vf):600 mV 在 1 A 条件下属于典型肖特基特性,比普通硅整流器低,能减少整流损耗和发热。实际电路中 Vf 会随温度与电流变化,低温时略高,高温时略低。
  • 反向耐压(Vr):40 V,适合 12V/24V 等常见电源环节的整流与保护,但不宜用于高压应用(如 >40V 的系统)。
  • 反向漏电流(Ir):200 μA @ 40 V,此值在肖特基中偏大,需注意在高温或高阻抗电路(例如电池检测、传感器前端)中产生的漏耗与偏置误差。
  • 浪涌能力(Ifsm):30 A,能承受一定的非重复峰值浪涌(如上电突发浪涌或整流器短时冲击),具体测试波形与时长以厂方资料为准。
  • 功率与热:在 1 A 工作点,器件功耗约为 P = Vf × I = 0.6 W,持续工作需关注封装散热与环境温度,避免结温超限。

三、封装与机械特性

DO‑41 为轴向引线的穿孔封装,易于手工焊接与波峰/选择性焊接安装,适合中小批量或维修场景。封装尺寸允许在 PCB 或面包板上灵活布局。引脚极性通常在器件一端有标记(注:装配时注意确认阳极/阴极方向)。

四、典型应用场景

  • 开关电源(降压/升压)整流与续流二极管(尤其对快速恢复与低压降有利)
  • 反向极性保护(汽车、工业电源输入端)
  • 功率整流(12V/24V 电源)
  • 二极管保护/钳位(抑制反向尖峰、快速钳位开关节点)
  • 充电与逆变器小电流回路

五、设计与使用注意事项

  • 漏电流影响:200 μA 的反向漏电在某些高阻抗或低功耗电路中可能不可忽视,设计时需评估漏电对电平检测与功耗的影响。
  • 温度影响:肖特基的漏电流随温度迅速上升,若工作环境高温,反向漏电会显著增加,应留裕量或选用更低漏电型号。
  • 散热管理:连续 1 A 工作并伴随 0.6 W 发热,若设备长期高功率运行,应考虑增强散热(加散热铜箔、降低环境温度或选用更大功率封装)。
  • 浪涌与保护:Ifsm 为非重复峰值,不能作为持续脉冲或重复浪涌的保证。对频繁冲击场景,应考虑并联或选型更高浪涌能力的器件,并结合熔断器/浪涌抑制器使用。
  • 极性与布局:DO‑41 封装引线较长,布局时注意最短路径与合理走线以减少寄生电感与接触电阻。

六、可靠性与环境适应

工作结温范围 -55 ℃ ~ +125 ℃ 适用于工业级应用。肖特基结构对高温更为敏感,长期高温会影响反向漏电与可靠性。对潮湿与温度循环的应力测试应参考扬杰供货的完整可靠性报告(如 HTRB、温度循环、湿热等)。

七、选型与替代建议

  • 若系统电压低于 20 V,可考虑 1N5817(20 V 级)以获得更低 Vf/更低漏电。若需要更高耐压,1N5818(30 V)与 1N5819(40 V)为系列选项(按具体型号参数确认)。
  • 对漏电敏感的应用,优先选用低漏电肖特基或考虑使用普通硅肖特基取舍(但注意 Vf 变化)。
  • 若需要更高的持续电流或更低 Vf,可选更大封装或功率级肖特基(如 SMC/DO‑214 等)。

八、储存与焊接建议

  • 储存:避光、干燥、常温保存,防止潮湿导致焊接缺陷或长期参数漂移。
  • 焊接:DO‑41 支持手工及波峰焊,注意不要长时间高温加热半导体结,若无厂方焊接曲线,建议使用常规温度/时间(快速加热、短时间回流)并避免直接焊接到结体上以减少热损伤。

总结:扬杰 1N5819(DO‑41)是一款面向中等电流、40 V 级别的通用肖特基整流器,低正向压降和较好的浪涌能力使其在电源整流、反接保护和续流等场景中具有良好性价比。选型时请结合实际工作温度、漏电容忍度与散热条件,并参照厂方完整 datasheet 以获得全部测试条件和限制说明。

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