WMSIC Electronic Components

BORN SS34SMC

ModelSS34SMC
PackageSMC
BrandBORN
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
BORN SS34SMC
Type
BORN
Minimum package
3000

Technical parameters

Electronic Component
BORN
Electronic Component
SS34SMC
Electronic Component
1
Package
SMC
Electronic Component
Schottky Diode
Electronic Component
0.351g
Electronic Component
1
Electronic Component
BM0227656411
Current
3A
Diode
1
Current(Ir)
500uA@40V
(Vf)
550mV@3A
Electronic Component
65℃~+150℃
Electronic Component
3000
Voltage Rating(Vr)
40V
Surge Current (Ifsm)
150A

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

SS34SMC 产品概述

一、产品简介

SS34SMC 是伯恩半导体(BORN)推出的一款肖特基整流二极管,面向中等功率整流与保护场景。器件在大电流工作点下具有较低的正向压降和快速的开关特性,适用于开关电源、DC-DC 转换、反向保护及续流回路等应用。封装为 SMC,便于散热并能承受较高的环境应力。

二、主要参数

  • 型号:SS34SMC(BORN / 伯恩半导体)
  • 正向压降 (Vf):0.55 V @ 3 A
  • 直流反向耐压 (Vr):40 V
  • 连续整流电流:3 A
  • 反向漏电流 (Ir):500 μA @ 40 V
  • 非重复峰值浪涌电流 (Ifsm):150 A
  • 工作结温范围:-65 ℃ ~ +150 ℃
  • 封装:SMC

三、关键特性与优势

  • 低正向压降:0.55 V 在 3 A 条件下,有助于降低整流损耗和发热,提升转换效率。
  • 快速恢复/肖特基特性:开关损耗小,适合高频开关电源和快速脉冲环境。
  • 高浪涌承受力:150 A 的非重复峰值浪涌电流,可以在启动、短时过载或冲击电流情况下提供保护能力。
  • 宽工作温度:-65 ℃ 至 +150 ℃,适应工业级和严苛环境使用。

四、典型应用场景

  • 开关电源输出整流(SMPS)与续流二极管
  • DC-DC 转换器的降压/升压整流
  • 电池管理与反向保护电路
  • 车载电子(在满足温度和漏电流要求的前提下)
  • 工业控制与通信电源模块

五、封装与热管理建议

  • SMC 封装具有较好的导热面积,但在 3 A 连续工作时器件自身功耗为约 0.55 V × 3 A = 1.65 W,需做好散热设计。
  • PCB 布局建议:增大焊盘铜箔面积、添加散热层或多层热通孔(thermal vias),尽量缩短电流回路走线以减小寄生阻抗。
  • 若长期在高温或接近额定电流下工作,应适当降额(derating),以延长可靠性寿命。

六、可靠性与使用注意事项

  • 反向漏电流在高温下会显著增加,设计时需评估最大工作温度下的 Ir 对系统静态损耗或待机电流的影响。
  • 非重复峰值浪涌为脉冲能力指标,不能作为长期过流运行依据;频繁浪涌会加速老化。
  • 避免长期在接近最大结温(+150 ℃)工作,推荐在系统温升预算内控制结温。
  • 在感性负载和高 dV/dt 场景,应配合压敏元件或吸收电路以抑制超压和反向尖峰。

七、替代型号与选型建议

  • 若需要更低正向压降或更高反向耐压,可参考同类肖特基系列中更高 Vr 或更低 Vf 的型号;若封装或散热受限,可考虑更大封装(如 DPAK)以降低结温。
  • 选型时关注:最大连续电流、正向压降在工作电流点的实际值、反向漏电流随温度的变化、浪涌承受能力及封装热阻等。

八、采购与质量保证

  • 采购时请确认供应商为伯恩半导体授权渠道,索取原始器件数据手册和可靠性测试报告。
  • 对关键应用建议进行样片验证(包括热测试、浪涌测试和长期老化测试),并在量产前完成 PCB 实装验证与环境应力筛选(ESS)流程。

以上为 SS34SMC 的产品概述与实用建议。如需进一步的电气特性曲线、封装尺寸图或参考电路布局示意,可提供以便补充。

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