WMSIC Electronic Components

KUU SS54

ModelSS54
PackageSMA(DO-214AC)
BrandKUU
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
KUU SS54
Type
KUU
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
KUU
Electronic Component
SS54
Electronic Component
1
Package
SMA(DO-214AC)
Electronic Component
Schottky Diode
Electronic Component
0.2g
Electronic Component
1
Electronic Component
BM0234575824
Current
5A
Diode
Electronic Component
Current(Ir)
1mA@40V
(Vf)
550mV@5A
Electronic Component
55℃~+150℃
Electronic Component
Electronic Component
Electronic Component
2000

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

SS54(KUU)肖特基二极管 产品概述

一、产品简介

KUU SS54 为独立式肖特基整流二极管,采用 SMA(DO-214AC)表面贴装封装。该器件针对中低压、大电流整流场合优化,正向压降低、开关速度快,适合开关电源、DC-DC 转换、电池保护与续流等应用。典型工作结温范围宽(-50℃ ~ +125℃),结合较高的冲击能力,可满足一般工业与消费电子的应用需求。

二、主要电气参数

  • 二极管配置:独立式(单只器件)
  • 正向压降(Vf):550 mV @ 5 A
  • 直流反向耐压(Vr):40 V
  • 连续整流电流:5 A
  • 反向漏电流(Ir):500 μA @ 40 V
  • 非重复峰值浪涌电流(Ifsm):150 A(单次冲击)
  • 工作结温范围:-50 ℃ ~ +125 ℃

三、封装与热特性

SS54 使用 SMA(DO-214AC)封装,体积小、便于自动贴装。SMA 封装在中等功率密度下具有良好的机械强度和热传导性能。为了获得最佳散热效果,建议在 PCB 设计时采用宽铜箔引线、必要时添加散热铺铜与过孔直通基板散热层,以降低结温并延长可靠性寿命。

四、典型应用场景

  • 开关电源(SMPS)输出整流
  • 同步/非同步降压转换器续流二极管
  • 电池反向保护与整流
  • 逆变/整流模块的保护与钳位
  • 汽车电子中 12V/24V 低压回路(注意电压裕度)

SS54 的 40 V 反向耐压适合 12V/24V 系统及一般低压电源应用;要求更高耐压场合应选择更高 Vr 的肖特基型号。

五、设计与使用建议

  • 布局:尽量缩短器件到电源回路的走线,增加走线宽度与铜厚,必要时在器件下方铺大面积散热铜箔。
  • 并联使用:若需超过单只 5 A 的连续电流,应谨慎并联;并联时要保证器件 Vf 匹配或使用小阻值均流手段,避免因 Vf 差异产生不均流。
  • 冲击电流:Ifsm=150 A 为非重复峰值浪涌能力,可应对启动或短时浪涌,但频繁冲击会影响寿命;设计时应确保浪涌脉冲受限或使用合适的保护元件。
  • 温度管理:在高温环境或靠近热源时,应考虑电流降额与散热增强,以免超过结温上限。
  • 焊接工艺:支持常见的 SMD 回流焊装配工艺,生产时请遵循器件供应商的焊接曲线与 PCB 预热流程以避免热应力损伤。

六、可靠性与测试要点

常见测试项目包括正向压降 Vf 测量(在 5 A 条件下验证),反向漏电 Ir(在 Vr=40 V 时测量),以及浪涌耐受测试(Ifsm)。出厂批次需关注 Vf 和 Ir 的分散,以保证电路一致性与效率。

七、选型提示

若系统电压或抑制电压高于 40 V,建议选择更高 Vr 等级的肖特基型号;若对效率有更高要求,可比较同功率等级下 Vf 更低的替代品。选型时还应关注封装、可靠性认证与供应稳定性。

总结:KUU SS54 提供了低正向压降与中高瞬时浪涌能力的经济型肖特基解决方案,适用于多种中低压电源整流与保护场合。选用时请结合 PCB 散热设计与电流降额要求,确保长期可靠运行。

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