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FUXINSEMI SK34A
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- FUXINSEMI SK34A
- Type
- FUXINSEMI
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- FUXINSEMI
- Electronic Component
- SK34A
- Electronic Component
- 1
- Package
- SMA(DO-214AC)
- Electronic Component
- Schottky Diode
- Electronic Component
- 0.101g
- Electronic Component
- 1
- Electronic Component
- BM0227791059
- Current
- 3A
- Diode
- Electronic Component
- Current(Ir)
- 500uA@40V
- (Vf)
- 500mV@3A
- Electronic Component
- Electronic Component
- Electronic Component
- 5000
- Voltage Rating(Vr)
- 40V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SK34A 产品概述
一、概述
SK34A 是富芯森美（FUXINSEMI）推出的一款独立式肖特基整流二极管，封装为 SMA (DO-214AC)。器件以低正向压降和快速恢复特性为优势，适用于开关电源整流、降压/升压转换器、续流保护及极性反接保护等场合。典型电气参数包括：正向压降 Vf = 0.5V @ 3A，直流反向耐压 Vr = 40V，反向电流 Ir = 500µA @ 40V，整流电流 IO = 3A。
二、主要特性
- 低正向压降：Vf≈0.5V（在3A时），减小导通损耗，提高转换效率。
- 低势垒肖特基结构：开关快速、无显著反向恢复峰值，适合高频开关电路。
- 中等耐压等级：Vr = 40V，覆盖多种12V、24V系统及常见开关电源应用。
- 小封装大电流：SMA（DO-214AC）封装在有限空间内实现3A整流能力，适合中功率密度电路板。
- 品牌与可靠性：FUXINSEMI（富芯森美）出品，具备常规工业级制造与质量控制。
三、典型应用
- 开关电源（SMPS）二次整流或同步整流替代件；
- DC-DC 转换器的输出整流与续流二极管；
- 汽车电子、通信电源与工业电源的防反接与保护；
- 电池充放电路径的阻隔与防回灌；
- 高频整流场合需要快速恢复且损耗低的通路。
四、封装与热管理建议
SMA (DO-214AC) 提供较好的焊接强度与热传导路径，但3A持续整流时仍需关注结温。建议：
- 在PCB设计时使用较大铜箔与散热焊盘，必要时在焊盘下方做过孔以连接内层或底层散热铜。
- 在高环境温度或高占空比条件下对整流电流进行降额，实际使用中通过温升试验确定安全工作电流。
- 遵循制造商推荐的回流焊温度曲线与焊盘布局，避免过度应力或焊接缺陷。
五、使用注意事项
- 反向漏电随温度显著上升，40V 时 Ir = 500µA，仅适用于对反向漏电有限制的场合；高温时需额外评估。
- 若用于脉冲或瞬态大电流，应评估峰值脉冲能力与热冲击，必要时选用散热更优或并联/并联+电阻限流的方案。
- 器件为独立式单颗二极管，布局时注意正负极标识与电气隔离要求。
六、结论
SK34A（FUXINSEMI）是一款面向中功率、高频整流场合的肖特基二极管，凭借0.5V @ 3A 的低正向压降与40V耐压特性，适用于开关电源输出整流、续流保护及一般整流用途。设计时应重视热管理与温度对反向漏电的影响，合理降额与优化PCB散热可提升可靠性与效率。若需更详细的电气特性曲线、封装尺寸与回流焊工艺参数，请参考厂商正式数据手册。
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