WMSIC Electronic Components

ST 1N5231BPF Zener diode 1N5231BPF

Model1N5231BPF
PackageDO-35
BrandST
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
ST 1N5231BPF
Type
ST
Minimum package
500 未知

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ST
Electronic Component
1N5231BPF
Electronic Component
1
Package
DO-35
Electronic Component
Zener Diode
Electronic Component
0.085g
Electronic Component
1
(Zzk)
1.6kΩ
(Zzt)
17Ω
Electronic Component
BM0264780368
Diode
1
Current(Ir)
5uA@2V
Power Dissipation(Pd)
500mW
Electronic Component
4.85V~5.35V
Electronic Component
Electronic Component

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

1N5231BPF稳压二极管产品概述

一、产品核心定位与应用场景

1N5231BPF是一款小功率轴向稳压二极管,核心功能为提供稳定的5.1V基准电压,定位偏向「低成本、小体积、低功耗」的通用稳压场景,适配多领域需求:

  • 消费电子:手机充电器辅助稳压、蓝牙耳机/智能手环的待机电路;
  • 工业控制:PLC模块输入基准、温湿度传感器偏置电压;
  • 电池供电设备:无线传感器节点的低功耗稳压;
  • 过压保护:单片机、蓝牙模块等敏感电路的过压钳位辅助。

二、关键电气参数深度解析

参数直接决定性能边界,需结合应用理解:

  1. 稳压值(标称/范围):标称5.1V,实际工作4.85V~5.35V。属于通用精度等级,满足无需亚毫伏级精度的场景(如传感器偏置),避免高精度基准管的成本溢价。
  2. 反向漏电流(Ir):2V反向电压下仅5μA,漏电流极低。反向截止时几乎不耗电,适配电池供电的低功耗电路(如待机传感器节点)。
  3. 耗散功率(Pd):500mW,换算稳压电流≈98mA(Pd=Vz×Iz)。仅适配小电流负载(如单片机IO口),超100mA需并联或换大功率器件(如1N4733)。
  4. 动态阻抗(Zzt/Zzk):测试电流下Zzt≤17Ω,零温度系数点Zzk≤1.6kΩ。动态阻抗越小,电压随负载电流波动越小——17Ω可保证50mA电流波动时,电压变化仅≈0.85V,满足一般稳压需求。

三、封装与可靠性设计

采用DO-35轴向玻璃封装,具备三大优势:

  • 体积小巧:直径2.5mm、长度4.5mm,适配高密度PCB(如穿戴设备电路板);
  • 环保合规:无铅封装符合RoHS标准,可用于出口或环保要求场景;
  • 可靠性强:玻璃钝化工艺提升温度稳定性(-55℃~+150℃),抗潮湿、抗冲击优于塑料封装,适配工业或户外场景。

四、品牌与品质保障

由ST(先科) 生产,国内知名半导体厂商,产品具备:

  • 参数一致性:批量稳压值偏差控制在规格内,避免批次波动;
  • 供货稳定:产能充足,满足百万级量产需求(如消费电子订单);
  • 质量认证:通过ISO9001,部分批次符合AEC-Q101汽车级标准(需确认批次)。

五、典型应用电路参考

1. USB升压稳压电路

  • 结构:7V输入(USB升压)→ 100Ω限流电阻 → 1N5231BPF反向接地 → 输出5.1V;
  • 逻辑:限流电阻限制稳压电流(≈19mA),保证输出稳定;
  • 适用:单片机基准、蓝牙模块供电。

2. 电池过压保护电路

  • 结构:3.7V锂电池 → 串联保护电阻 → 并联1N5231BPF至负载;
  • 逻辑:过充时(电压>5.1V),稳压管击穿钳位电压,保护传感器;
  • 适用:智能手环、无线节点防护。

六、选型注意事项

  1. 负载电流≤98mA,超量需并联或换大功率器件;
  2. 需高精度(±0.1%内)选基准管(如LM385-5.0),而非稳压二极管;
  3. 工业高温场景需确认工作温度范围(部分批次支持-55℃~+150℃)。

1N5231BPF凭借成本、体积优势,成为通用小功率稳压场景的高性价比选择,适用于对精度要求中等、低功耗的电路设计。

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