WMSIC Electronic Components

FOSAN SS54

ModelSS54
PackageSMA
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 SS54
Type
FOSAN
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
FOSAN
Electronic Component
SS54
Electronic Component
1
Package
SMA
Electronic Component
Schottky Diode
Electronic Component
0.12g
Electronic Component
1
Electronic Component
BM0264881638
Current
5A
Diode
1
Current(Ir)
100uA@40V
(Vf)
550mV@5A
Electronic Component
65℃~+150℃
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.

SS54肖特基二极管产品概述

一、产品基本信息

SS54是FOSAN(富信)品牌推出的独立式肖特基整流二极管,型号命名遵循行业通用规则:“SS”标识肖特基二极管(Schottky Rectifier),“5”对应额定整流电流5A,“4”对应直流反向耐压40V。该产品为单管独立封装,无并联/串联配置,便于电路设计灵活调用,是针对低压中等功率场景的通用型器件。

二、核心电性能参数解析

SS54的关键电性能直接决定其适用范围,核心指标及意义如下:

  1. 正向导通特性:额定电流下正向压降仅550mV(@5A),远低于普通硅整流二极管(通常1V以上),可显著降低导通损耗,提升电路效率;
  2. 反向耐压与漏电流:直流反向耐压(Vr)为40V,适配12V/24V等低压系统;额定反向电压下漏电流仅100μA(@40V),反向截止性能稳定,避免反向漏电导致的功耗浪费;
  3. 电流承载能力:额定整流电流(If)为5A,满足中等功率电路的持续电流需求;非重复峰值浪涌电流(Ifsm)达120A,可有效应对开机瞬间、负载突变等突发大电流冲击,提升电路可靠性;
  4. 温度特性:工作结温范围覆盖-65℃至+150℃,符合工业级器件要求,适应高低温环境下的稳定工作。

三、封装与物理特性

SS54采用SMA封装(对应行业标准DO-214AC),属于小型贴片封装:

  • 尺寸紧凑(典型值:长4.5mm×宽2.7mm×高1.2mm),节省PCB空间,适合小型化电子设备;
  • 贴片式设计支持自动化贴装(SMT),生产效率高,适配批量制造;
  • 引脚布局符合行业规范,与同类SMA封装器件兼容,便于电路替换或升级。

四、典型应用场景

基于低Vf、中等电流、低压耐压的特性,SS54主要应用于以下场景:

  1. 低压开关电源:作为输出整流管,用于12V/24V电源的直流输出,低Vf降低电源损耗,提升转换效率;
  2. DC-DC转换器:在降压/升压电路中作为续流二极管,减少续流损耗,优化电路效率;
  3. 电机驱动电路:用于直流电机、步进电机的续流保护,吸收电机关断时的反向电动势,保护驱动芯片;
  4. 低电压电路钳位:在信号电路中作为钳位二极管,限制过压信号,保护敏感元器件;
  5. 小型充电设备:如手机充电器、移动电源的辅助整流,适配低压输出需求。

五、关键优势与设计注意事项

(一)核心优势

  1. 低功耗高效能:550mV@5A的正向压降是核心优势,尤其适合对效率要求较高的电源类产品;
  2. 抗浪涌能力强:120A非重复浪涌电流耐受能力,避免瞬间大电流损坏器件,提升电路可靠性;
  3. 宽温适应性:工业级温度范围满足户外、车载、工业控制等恶劣环境应用;
  4. 兼容性好:SMA封装与同类器件兼容,降低设计替换成本。

(二)设计注意事项

  • 反向耐压40V,需避免电路出现超过40V的反向电压,必要时增加过压保护;
  • 工作结温上限150℃,需确保PCB散热设计合理,避免器件过热;
  • 浪涌电流为非重复值(单次/短时间冲击),不可作为持续电流使用。

SS54凭借低损耗、高可靠性及紧凑封装,成为低压中等功率电路的优选肖特基二极管,适配多种通用电子设备的设计需求。

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