WMSIC Electronic Components

YANGJIE SMA4733A

ModelSMA4733A
PackageSMA(DO-214AC)
BrandYANGJIE
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

13 specifications

Core information

Product name
YANGJIE SMA4733A
Type
SMA(DO-214AC)
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
YANGJIE
Electronic Component
SMA4733A
Electronic Component
1
Package
SMA(DO-214AC)
Electronic Component
0.12g
Electronic Component
1
Electronic Component
BM0264397967
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.

SMA4733A 产品概述

一、产品简介

SMA4733A 是扬杰(YANGJIE)推出的一款单体稳压二极管,采用SMA (DO-214AC) 低外形封装,标准稳压值为5.1V(标称)。该器件为玻璃钝化芯片结结构,具有高正向浪涌能力和优秀的焊接可靠性,适用于自动贴装的表面贴装工艺(SMT)。符合J-STD-020的MSL 1级,最高峰值回流温度可达260℃,便于工业化量产与可靠装配。

二、主要电气参数

  • 稳压值(标称):5.1V
  • 稳压值范围:4.85V ~ 5.36V
  • 反向电流 Ir:10μA @ 1V
  • 稳态阻抗 Zzt:7Ω(在标准测试条件下)
  • 脉冲/斜率阻抗 Zzk:550Ω
  • 二极管配置:1个独立式

这些参数表明 SMA4733A 在小功率稳压场合具有较低的动态阻抗和可预测的电压特性,适合用于需要一定稳定性的精密偏置或参考电压场合。

三、封装与机械特性

  • 封装形式:SMA (DO-214AC)
  • 低外形设计,适合自动贴装(SMT)生产线
  • 玻璃钝化芯片结提高了器件的长期稳定性与抗环境影响能力
  • 符合J-STD-020 MSL1,LF峰值回流温度260℃,支持常规回流焊工艺

SMA封装在占板面积与散热能力之间取得平衡,适合空间受限而又需一定功耗处理的应用。

四、可靠性与工艺兼容性

  • 玻璃钝化工艺提升结面稳定性,降低漏电与噪声漂移
  • 高正向浪涌能力,增强瞬态冲击承受能力,适合含瞬态负载或电源波动的环境
  • MSL1等级表明器件在常规储存与贴装条件下不需特别干燥箱或回流前烘烤处理,便于物料管理与生产节拍

五、典型应用场景

  • 低功耗电路的基准/稳压源(如传感器供电、模拟前端偏置)
  • 保护与钳位电路(限制电压尖峰、保护敏感器件)
  • 工业与消费类电子的局部稳压与参考电压电路
  • 通信设备、测量仪器及电源管理模块中的过压/稳压子电路

六、使用建议与PCB布局要点

  • 作为基准或并联稳压元件时,建议将二极管靠近被保护或供电节点布置,以减少走线引入的压降与寄生阻抗。
  • 采用合适的串联限流电阻以控制稳压工作电流,避免长期工作在高功耗应力下。
  • 考虑SMA封装的热阻与散热路径,必要时在PCB上增加铜箔散热区域以提高热能力。
  • 遵循器件的推荐回流焊曲线(峰值≤260℃)进行贴片焊接,避免超过热应力极限以确保长期可靠性。

七、总结

SMA4733A(YANGJIE)是一款面向小功耗稳压与保护应用的高可靠SMA封装稳压二极管,具有稳定的5.1V标称电压、低稳态阻抗(Zzt=7Ω)和良好的工艺兼容性(MSL1,260℃回流峰值)。其玻璃钝化工艺与高正向浪涌能力,使其在工业、通信及消费电子的局部稳压与保护电路中具备较高的适用性与可靠性。若需进一步选型建议或电路匹配计算,可提供具体工作电流与温度条件以获得更精确的应用指导。

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