WMSIC Electronic Components

LRC FMAF407

ModelFMAF407
PackageSMA-FL
BrandLRC
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
LRC FMAF407
Type
LRC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LRC
Electronic Component
FMAF407
Electronic Component
1
Package
SMA-FL
Electronic Component
General Purpose Diode
Electronic Component
0.059g
Electronic Component
1
Electronic Component
BM0227742070
Current
1A
Diode
Electronic Component
Current(Ir)
5uA
(Vf)
1.1V
Electronic Component
55℃~+150℃
Electronic Component
Electronic Component
Electronic Component
3000

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

FMAF407 产品概述

一、产品简介

FMAF407 是乐山无线电(LRC)推出的一款通用独立式整流二极管,采用 SMA-FL 表面贴装封装。该器件设计用于中高压整流场合,标称正向压降典型值为 1.1V,直流反向耐压达 1kV,连续整流电流 1A,适合开关电源一次侧、高压整流、工业电源及稳压保护等应用场景。

二、主要特性

  • 独立单管封装,方便印制板安装与替换;SMA-FL 适配常见 SMT 工艺。
  • 最高反向耐压 Vr = 1000V,满足高压整流和阻断要求。
  • 正向压降 Vf ≈ 1.1V(在额定工作点),低压降有助于降低整流损耗。
  • 连续整流电流 If = 1A,非重复峰值浪涌电流 Ifsm = 30A,具备较好的冲击承受能力。
  • 低反向漏电 Ir = 5μA(常温),在高电压偏置下漏电控制良好。
  • 工作结温范围宽:-55℃ ~ +150℃,适应工业级温度环境。

三、电气参数要点

  • 反向耐压(Vr):1000V,须注意反向峰值和浪涌保护电路设计。
  • 正向压降(Vf):典型 1.1V(取决于测试电流),高电流时压降和功耗会线性上升。
  • 连续整流电流(If):1A,长时间满载时需评估封装热阻与印制板散热能力。
  • 峰值浪涌(Ifsm):30A,能承受瞬时冲击如启动或雷击浪涌,但不可长期重复使用超限脉冲。
  • 反向电流(Ir):5μA(常温),随温度升高漏电会增加,关键场合请参考温度相关曲线(如需更详细曲线建议向厂家索取详细数据表)。

四、典型应用

  • 开关电源一次侧整流/续流。
  • 高压电源及高压整流模块(例如 CRT/显像器件替代、科学仪器高压电源)。
  • 工业控制电源、继电器驱动电路的保护与整流。
  • 通用电子设备中的整流、反向保护与钳位电路。

五、封装与热管理

SMA-FL 为小型表面贴装封装,便于自动化贴装与回流焊工艺。由于 Vf 在 1A 时约 1.1V,器件在满载时功耗约为 P = Vf × If ≈ 1.1W,需考虑印制板铜箔面积和导热路径以降低结温。建议:

  • 在焊盘周围使用热扩散铜箔或散热通孔(vias)引导至背面散热层。
  • 设计时留有合适的散热裕度并对长期 1A 工作点进行温升验证。
  • 遵循厂家回流焊温度曲线,避免超温造成封装应力或性能退化。

六、可靠性与使用注意事项

  • 避免长期在额定极限附近工作,应有适当的额定裕度;对于频繁出现高浪涌或高温的工况,建议选用更高规格器件或增加并联/保护措施。
  • 反向漏电受温度影响显著,高温环境下需评估电路总体漏电容忍度。
  • 对瞬态过压(如雷击脉冲)应配合压敏电阻、TVS 或 RC 吸收网络进行抑制,以保护器件不被反复冲击而失效。
  • 储存与回流焊过程中按行业标准执行防潮、防静电措施,避免封装表面污染影响焊接质量。

七、总结

FMAF407 在 1kV 的高耐压能力与 1A 的整流电流下,兼具低正向压降与较低漏电的特点,适合多种中高压整流及保护用途。合理的版面热设计与浪涌保护是确保长期可靠运行的关键。如需更详细的电气特性曲线、封装图或焊接说明,建议向 LRC 索取完整数据手册进行最终设计验证。

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