WMSIC Electronic Components

SHIKUES SS56FL Schottky Diode SS56FL

ModelSS56FL
PackageSMAF
BrandSHIKUES
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
SHIKUES SS56FL
Type
SHIKUES
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SHIKUES
Electronic Component
SS56FL
Electronic Component
1
Package
SMAF
Electronic Component
Schottky Diode
Electronic Component
0.053g
Electronic Component
1
Electronic Component
BM0228038145
Current
5A
Diode
Electronic Component
Current(Ir)
1mA@60V
(Vf)
550mV@5A
Electronic Component
Electronic Component
Electronic Component
3000
Voltage Rating(Vr)
60V

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

SS56FL 产品概述

一、产品定位与主要参数

SS56FL(品牌:SHIKUES 时科)是一款独立式肖特基整流二极管,面向需要低正向压降与中等整流电流的开关电源、整流与反向保护场合。主要参数如下:

  • 二极管类型:肖特基二极管(独立式)
  • 正向压降:Vf = 550 mV @ 5 A
  • 直流反向耐压:Vr = 60 V
  • 反向电流:Ir = 1 mA @ 60 V
  • 额定整流电流:If(AV) = 5 A
  • 封装:SMAF
  • 品牌:SHIKUES(时科)

二、核心优势与性能解读

  1. 低正向压降:在满载5 A条件下,正向压降仅约0.55 V,能显著降低导通损耗与发热,提升转换效率,适合对效率和热管理有要求的电源设计。
  2. 快速恢复与低开关损耗:肖特基结构本身不存在传统PN结的明显反向恢复峰值,适合高频开关环境,可减少开关损耗(注意:肖特基仍有反向漏电特性)。
  3. 中等耐压能力:60 V的反向耐压使其可用于12 V/24 V和部分48 V系统的整流与保护应用。
  4. 容许较高整流电流:5 A 的额定整流能力适合小功率至中功率电源、DC-DC转换等场合。

三、典型应用场景

  • 开关电源(SMPS)的输入/输出整流二极管
  • DC-DC降压或升压模块的整流与续流(free-wheeling)二极管
  • 逆向电流保护与反接保护电路
  • 汽车电源及车载电子(在满足温升与浪涌要求的前提下)
  • 工业电源、充电器、适配器等需要高效率整流的电源系统

四、热管理与设计注意事项

  1. 功耗估算:在最大额定电流5 A下的近似导通损耗为 P ≈ Vf × I = 0.55 V × 5 A = 2.75 W(实际损耗随电流分布与温度略有变化)。此热量需通过封装与PCB散出。
  2. 散热建议:
    • 在PCB设计上增加焊盘铜箔面积,使用多层大铜面或散热层以提升导热能力。
    • 在焊盘下或周围布置热通孔(thermal vias)连通内层或底层散热铜箔。
    • 若工作在靠近额定极限或高环境温度下,应进一步降额使用或外加散热片。
  3. 反向漏电与温度影响:给定的反向电流1 mA@60 V相对偏大,且肖特基二极管的漏电随结温显著上升。在高温或长期偏置下应特别注意漏电对静态功耗与系统行为的影响。在低功耗待机或高温环境中,可能需选用漏电更低的器件或采取温控降额。
  4. 冲击与浪涌:在存在大浪涌电流或尖峰电压的应用(如汽车负载切换、浪湧)中,应配合浪涌抑制(如TVS)或在选型时考虑器件的脉冲峰值能力。

五、封装与可靠性

  • 封装形式为SMAF(表面贴装),便于自动贴装与回流焊工艺。SMAF封装尺寸紧凑,适合空间受限的设计。
  • 在用料与工艺方面,建议参考SHIKUES(时科)提供的机械尺寸、焊接曲线与可靠性测试数据,以确保生产与长期可靠性。
  • 对于高循环电流或振动环境,应关注焊点与封装机械疲劳特性,必要时通过加固或底胶工艺提高可靠性。

六、选型建议与结论

  • 若设计目标是中等功率(数十瓦左右)且需要较低导通损耗的整流器件,SS56FL(550 mV@5 A, 60 V)为性价比较高的选择。
  • 在高温、低静态功耗场合或对漏电敏感的应用,应评估1 mA@60 V反向漏电对系统的影响,必要时考虑替代漏电更低的肖特基或PN二极管。
  • 最终选型请以厂商完整数据手册为准,重点查看正向特性随温度的变化曲线、热阻(RθJA/RθJC)、脉冲能力以及封装推荐焊盘与回流温度曲线,以确保在目标应用下的热稳态与可靠性。

总结:SS56FL 是一款面向中小功率电源和保护电路的低压降肖特基整流二极管,特点是低Vf、5 A整流能力与60 V耐压。合理的PCB散热设计与对反向漏电的评估是其在实际应用中获得稳定性能的关键。若需更详细的热阻、脉冲电流能力或机械尺寸,请提供或参考SHIKUES(时科)正式数据手册。

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