WMSIC Electronic Components

FOSAN SS310B

ModelSS310B
PackageSMB
BrandFOSAN
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
FOSAN SS310B
Type
FOSAN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
FOSAN
Electronic Component
SS310B
Electronic Component
1
Package
SMB
Electronic Component
Schottky Diode
Electronic Component
0.181g
Electronic Component
1
Electronic Component
BM0264886266
Current
3A
Diode
1
Current(Ir)
20uA@100V
(Vf)
850mV@3A
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.

SS310B 产品概述

一、产品简介

SS310B 为 FOSAN(富信)出品的肖特基(Schottky)整流二极管,封装为 SMB(常见的 DO-214AA 形式),设计用于中高电流整流及开关电源应用。其主要电气参数为:正向压降 Vf = 0.85V(在 3A 条件下);直流反向耐压 Vr = 100V;额定整流电流 3A;反向漏电流 Ir ≤ 20μA(在 100V);工作结温范围 −65℃ ~ +150℃。该器件兼顾低正向压降与较高反向耐压,适合要求效率与耐压并重的场景。

二、主要特性

  • 肖特基结结构,正向压降低,有利于降低导通损耗和发热。
  • 额定整流电流 3A,适合中功率电源和整流环节。
  • 100V 反向耐压,覆盖大多数 48V 及以下系统的保护与整流需求。
  • 反向电流小(≤20μA@100V),在高压或待机场景下漏电损耗低。
  • 宽工作结温范围(−65℃~+150℃),适应工业级温度环境。
  • SMB 封装,适合自动贴装与较大散热面积的 PCB 设计。

三、电气与热性能注意事项

  • 峰值功耗估算:在最大工作电流 3A 时,单只二极管在导通期间的瞬时功耗约为 P = Vf × I ≈ 0.85V × 3A ≈ 2.55W。长时间工作下需考虑散热。
  • SMB 封装具有一定的散热能力,但在连续大电流工作时建议在 PCB 上扩大铜箔面积、添加散热垫或铺铜,并合理设计热过孔以利于向内层或底层散热。
  • 推荐在实际应用中进行结温计算与降额设计,保证在环境温度升高时不超过器件允许结温上限。

四、典型应用场景

  • 开关电源(SMPS)输出整流及续流二极管
  • DC-DC 转换器、降压/升压模块的肖特基输出
  • 电池供电系统中的反向保护与整流
  • 电源适配器、LED 驱动、电机驱动等中功率电源电路
  • 高频整流与快速恢复场合(肖特基本征具有极快的恢复特性)

五、封装与装配建议

  • 封装:SMB(DO-214AA),兼容常见的 PCB 尺寸与贴装工艺。
  • 安装建议:使用自动贴片工艺(SMT)或波峰/回流焊工艺时注意温度曲线与焊接时间,避免超温导致器件应力。
  • PCB 设计建议:二极管焊盘应设计为较大焊盘并铺铜,必要时在焊盘下方和周边布置热过孔,缩短引线长度,减小电阻与压降。

六、选型与替代

SS310B 适合在需要兼顾较低正向压降与 100V 级耐压的场合使用。选型时若需更低 Vf 可考虑更高性能的肖特基系列;若需更高耐压应选择额定 Vr 更高的型号。替代器件在选用时需匹配关键参数:Vr、If(平均整流电流)、Vf@If、Ir@Vr、封装及工作温度范围。

七、采购与质量

  • 型号:SS310B;品牌:FOSAN(富信);封装:SMB。
  • 采购时建议向正规分销商或厂商直供获取器件数据手册(Datasheet)与产地/批次信息,确认出货符合 RoHS 等质量与环保要求。
  • 在量产前应做样品测试,包括温升、结温测量和长期可靠性测试,确保器件在目标工况下稳定工作。

如需更详细的参数曲线(正向特性随温度变化、反向特性曲线、脉冲测量条件等)或参考电路与封装尺寸图,可提供具体需求,我将为您补充对应的技术资料。

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