WMSIC Electronic Components

Leiditech SS34A

ModelSS34A
PackageSMA
BrandLeiditech
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
Leiditech SS34A
Type
LEIDITECH
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LEIDITECH
Electronic Component
SS34A
Electronic Component
1
Package
SMA
Electronic Component
Schottky Diode
Electronic Component
0.085g
Electronic Component
1
Electronic Component
BM0229921456
Current
3A
Diode
1
Current(Ir)
500uA@40V
(Vf)
550mV@3A
Electronic Component
65℃~+125℃
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.

SS34A 产品概述

一、产品简介

SS34A 是一款由 Leiditech(雷卯电子)提供的肖特基(Schottky)整流二极管,SMA 表面贴装封装,额定直流整流电流为 3A,最大反向耐压 40V。该器件具有低正向压降(Vf = 0.55V @ 3A)、较高的抗浪涌能力(非重复峰值浪涌电流 Ifsm = 100A),适用于需要低压降、快速整流的电源和保护电路。

二、主要电气参数

  • 正向压降:550mV @ 3A(典型)
  • 直流反向耐压:40V(Vr)
  • 额定整流电流:3A(Io)
  • 反向漏电流:500µA @ 40V(Ir)
  • 非重复峰值浪涌电流:100A(Ifsm,数据以厂方规格为准)
  • 工作结温范围:-65℃ ~ +125℃

这些参数表明 SS34A 在高电流、低压降场合具有良好的能效表现,但在高温或高反向电压下需注意漏电流增长与热管理。

三、封装与引脚

  • 封装类型:SMA(常见为 DO-214AC 区域型 SMT 封装)
  • 引脚标识:带环的一端为阴极(K),另一端为阳极(A)
    SMA 封装适合自动贴片与回流焊工艺,便于在空间受限的功率电路中使用。

四、典型应用场景

  • 开关电源(整流与续流)
  • DC–DC 转换器输入/输出整流
  • 逆向保护与电池管理(低压降保护电路)
  • 电源轨二次整流、噪声抑制场合
  • 工业与消费类电子需要 40V 以内电压的功率路径

五、布局与热管理建议

  • 为保证 3A 连续工作能力,应在 PCB 上提供较宽的铜箔导线与散热面;必要时在封装下方或附近使用散热铜柱与过孔将热量传导到内层或底层散热平面。
  • 采用适当的焊盘尺寸与丝网膏量,遵循厂方推荐的 PCB 封装图。
  • 注意反向漏电流随温度上升而显著增加,若工作环境温度较高,应评估漏电影响并考虑器件降额使用。

六、使用注意事项

  • Ifsm 为非重复峰值浪涌电流,具体测试条件(波形、时长)请参照产品 Datasheet,避免重复或长期超限冲击。
  • 对于高环境温度或长时间满载应用,建议对结温进行仿真或测试,必要时采用器件并联或选择更大额定电流器件。
  • 在高阻抗或敏感信号路径使用时,考虑反向漏电流对系统待机功耗的影响。

七、采购与质量

Leiditech(雷卯电子)品牌提供的 SS34A 适用于大批量 SMT 生产,购买时建议索取完整 Datasheet、可靠性报告和 RoHS/合规证书以便质量验证。对关键应用可要求样品并进行实际电气与热性能测试。

八、总结

SS34A 是一款性能均衡的低压降肖特基整流器件,凭借 0.55V 的低正向压降和 3A 的整流能力,适合多种 40V 以内的电源与保护场景。合理的 PCB 布局与热管理、遵循厂方浪涌与温度限制,能保证其长期可靠运行。

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