WMSIC Electronic Components

UMW SS310

ModelSS310
PackageSMB
BrandUMW
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
UMW SS310
Type
UMW
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
UMW
Electronic Component
SS310
Electronic Component
1
Package
SMB
Electronic Component
Schottky Diode
Electronic Component
0g
Electronic Component
1
Electronic Component
BM0229464357
Current
3A
Current(Ir)
200uA@100V
(Vf)
850mV@3A
Electronic Component
65℃~+150℃
Electronic Component
Electronic Component
Electronic Component
3000
Voltage Rating(Vr)
100V

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

UMW SS310 肖特基二极管 产品概述

一、核心参数概览

UMW(友台半导体)SS310 是一款面向中功率整流与保护应用的肖特基二极管,其关键电气和环境参数如下:

  • 正向压降 (Vf):850 mV @ If = 3 A
  • 直流反向耐压 (Vr):100 V
  • 连续整流电流:3 A
  • 反向漏电流 (Ir):200 μA @ Vr = 100 V
  • 工作结温范围:-65 ℃ ~ +150 ℃
  • 封装:SMB(表面贴装,DO-214AA 形态)

以上参数表明 SS310 在 3A 等级的应用中具有较低的正向压降与较高的反向耐压,适合需要效率与体积兼顾的电源与保护电路。

二、产品特性与工作机理

肖特基二极管采用金属—半导体势垒结构,与传统 PN 结二极管相比具备以下典型特性:

  • 低正向压降:在大电流条件下 Vf 仅约 0.85 V,有助于降低导通损耗与热耗散,提升转换效率。
  • 快速切换响应:肖特基结构本征上没有少数载流子储存,开关恢复时间短,适合高频脉动与开关电源场合。
  • 反向漏电流相对较高:在高反向电压和高温下漏电流会增大,SS310 在 Vr=100V 时 Ir=200 μA,为设计时需考虑的项。

这些特性决定了 SS310 在整流、续流(freewheeling)、防反接与高频电源中比较受欢迎,但在高温下漏电及热管理需重点关注。

三、典型应用场景

基于其电气与封装特性,SS310 常见应用包括但不限于:

  • 开关电源的输出整流与续流二极管(中功率 DC-DC 降压、适配器等)。
  • 逆向保护与防反接电路(电池管理、走线保护)。
  • 低压直流电机驱动的续流路径与保护。
  • 太阳能逆变器、小型电源模块、车载电子(需确认额外认证和环境适配)。

其 SMB 封装兼顾散热与 PCB 布局密度,适应自动化贴装与回流焊工艺。

四、热管理与使用建议

为保证长期可靠性和性能,使用 SS310 时应注意以下几点:

  • 热量管理:尽管 Vf 较低,但在 3 A 工作电流下仍会产生显著功耗(P ≈ Vf × I),应在 PCB 设计中通过加宽散热铜箔、增加散热铜面或设计散热通路来降低结温。
  • 漏电随温度上升:反向漏电流会随温度快速增长,在高温环境或高 Vr 条件下应预留足够裕量,必要时增加并联或采用温度补偿措施。
  • 电流与脉冲能力:长期连续 3 A 为器件额定整流能力,短脉冲电流可能超出器件瞬态能力。若电路存在大幅度冲击电流或浪涌,应验证峰值及重复频率是否安全。
  • 工作温度范围广(-65 ℃ ~ +150 ℃),适用于多数工业环境,但在极端温度或严苛振动环境下应进行可靠性验证。

五、封装与 PCB 安装要点

SMB 封装(表面贴装)特点适合自动化生产:

  • 提供良好的机械强度与可焊性,便于高速贴片与回流焊接。
  • 推荐在器件焊盘处设计合理的热散路径,尽量使用多层接地/电源平面或加宽铜箔以降低结温。
  • 焊接工艺应遵循无铅回流焊温度曲线规范,避免局部过热影响封装和材料性能。
  • 为减少热应力与机械应力,组装与检修时应避免过度扭曲和反复热循环。

六、选型建议与注意事项

在选用 SS310 作为设计器件时,请综合考虑以下方面:

  • 若系统工作电压接近 100 V 或存在高温环境,应验证反向漏电对整体系统效率与安全性的影响;必要时选择更高 Vr 或更低 Ir 的器件。
  • 关注器件在目标 PCB 环境下的结温(Tj),做合理的功耗计算与散热设计,避免长期在高结温下工作。
  • 在特定应用(如车规或医疗)需要相关认证时,确认器件是否满足相应规范或选择通过认证的替代型号。
  • 最终设计投入生产前,建议参考生产厂商的完整数据手册(Datasheet),并通过样机测试、热仿真与老化试验验证实际表现。

总结:UMW SS310 在 SMB 封装下以 3A/100V 的规格、低 Vf 与快速开关的肖特基特性,适合中等功率整流与保护场合。合理的热设计与对漏电随温度变化的评估是保证系统稳定运行的关键。若需完整电气特性曲线与机械尺寸,请参考 UMW 官方 Datasheet。

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