WMSIC Electronic Components

DOWO SS1040HEWS

ModelSS1040HEWS
PackageSOD-323HE
BrandDOWO
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
DOWO SS1040HEWS
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SS1040HEWS
Electronic Component
1
Package
SOD-323HE
Electronic Component
Schottky Diode
Electronic Component
0.031g
Electronic Component
1
Electronic Component
BM0258858576
Current
1A
Diode
1
Current(Ir)
100uA@40V
(Vf)
580mV@1A
Electronic Component
40℃~+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.

SS1040HEWS 产品概述

一、简介

SS1040HEWS 是东沃(DOWO)推出的一款小封装肖特基二极管,封装为 SOD-323HE,额定整流电流 1A、反向耐压 40V。凭借肖特基结构固有的低正向压降与快速响应特性,该器件适用于体积受限的电源整流、保护及开关降压电路中,尤其适合便携设备和高密度电路板设计。

二、主要参数

  • 正向压降 (Vf):580 mV @ IF = 1.0 A
  • 直流反向耐压 (Vr):40 V
  • 连续整流电流:1 A
  • 反向漏电流 (Ir):100 µA @ VR = 40 V
  • 工作结温范围:-40 ℃ ~ +150 ℃
  • 非重复峰值浪涌电流 (Ifsm):22 A
  • 封装:SOD-323HE(超小型贴片封装)

以上参数为典型/额定值,具体电气特性应参考厂商完整数据表。

三、核心特性与优势

  • 低正向压降:580 mV@1A 的正向压降在同规格整流电路中有较好的能耗表现,可降低功率损耗与发热,提升系统效率。
  • 小体积封装:SOD-323HE 占用 PCB 面积小,适合高密度布局与便携终端。
  • 快速响应:肖特基二极管固有的低反向恢复特性,适合高频开关电源和快速开关场合,能减少开关损耗与电磁干扰。
  • 宽温度范围:-40 ℃ 到 +150 ℃ 的工作结温使器件在工业级应用和高温环境中具有良好可靠性。
  • 抗浪涌能力:22 A 的单脉冲浪涌能力可应对短时启动电流或浪涌事件。

四、典型应用场景

  • 开关电源的输出整流与二次侧整流
  • 便携式充电器、移动电源的保护/整流元件
  • 反向保护(逆向连接保护)、电源 OR-ing 电路
  • LED 驱动与低压差整流场合
  • 快速钳位与浪涌吸收配合使用

五、热与可靠性注意事项

  • 虽然正向压降较低,但在高电流持续工作时仍会产生功耗(P = Vf × IF),需关注焊盘与周围铜箔的热扩散设计,必要时加大散热铜皮或利用散热 vias。
  • 在频繁浪涌或高温环境下工作时,应按系统热预算选择合适的散热方案,确保结温不超过额定值以延长器件寿命。
  • 反向漏电流随温度上升而增加,若在高温下作为高阻态开路使用(如电路掉电),需评估漏电对系统的影响。

六、封装与安装建议

  • 封装为 SOD-323HE,适合自动贴装与回流焊工艺。
  • 推荐遵循东沃提供的回流焊曲线与 PCB 推荐焊盘尺寸,避免超出回流峰值温度或延长高温时间,以降低焊接应力与封装损伤风险。
  • 在布线时保持正负极走线短而粗,以降低串联电阻与热点产生;焊盘周围留有一定铜皮以利散热。

七、选型与替代建议

  • 若设计对正向压降要求更低或需要更高电流等级,可考虑同厂或其他厂家的更高规格肖特基或低压降功率二极管。
  • 若封装空间允许,可选择封装功率更强的型号以获得更好的散热能力。
  • 在需要更高反向耐压的场合,应选择 Vr 更高的型号;反之在低压应用中可选更低 Vr 的更优化产品。

八、订购与常见问题

  • 型号:SS1040HEWS,品牌:DOWO(东沃),封装:SOD-323HE。
  • 购买前建议向供应商索取最新数据手册以确认所有电气与热参数、包装形式及可靠性测试结果。
  • 常见问题包括:高温下漏电增加、长期大电流工作下的结温控制、以及回流焊工艺兼容性,均可通过合理的热设计与工艺控制来解决。

如需我提供该型号的典型原理图接法示意、与常见替代型号的详细对比表,或在您具体电路中的热分析与布局建议,请告知电路工作条件(最大电流、允许结温、PCB尺寸等)。

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