WMSIC Electronic Components

SHIKUES TL431N

ModelTL431N
PackageSOT-23
BrandSHIKUES
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
SHIKUES TL431N
Type
SHIKUES
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SHIKUES
Electronic Component
TL431N
Electronic Component
1
Package
SOT-23
Electronic Component
Voltage Reference IC
Electronic Component
±0.5%
Electronic Component
0.056g
Electronic Component
1
Electronic Component
BM0228038140
Operating Temperature
25℃~+85℃
Operating Voltage
2.5V~36V
Output Voltage
2.5V~36V
Output Current
150mA
Output Type
Electronic Component
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.

SHIKUES TL431N 可调电压基准芯片产品概述

SHIKUES(时科)TL431N 是一款高精度、可调的并联(分流型)电压基准/可编程稳压器,采用 SOT-23 小型封装,面向精密参考、电源反馈和基准源应用。该器件在宽电压范围内工作,输出电流高达 150mA,基准精度优于 ±0.5%,在空间受限且需稳定基准的系统中具有良好性价比。

一、核心特性

  • 可调输出:参考点可通过外接电阻分压设置,输出电压范围 2.5V ~ 36V,灵活满足不同电源需求。
  • 高输出能力:最大并联(阴极)输出电流 150mA,适用于驱动小功耗负载或作为低功耗稳压器。
  • 高精度:基准电压精度 ±0.5%,适合对基准稳定性要求较高的仪表与控制电路。
  • 最小阴极调节电流:1mA,保证在该电流以上器件进入正常调节区间。
  • 工作电压/温度:工作电压范围 2.5V ~ 36V;工作温度 -25℃ ~ +85℃,适用于工业级但需注意在极端环境下的散热管理。
  • 小封装:SOT-23,便于表面贴装(SMT)和空间受限的电路板设计。

二、电气性能要点

  • 基准类型:并联(阴极型)电压基准,通过外接两个电阻(R1、R2)构成反馈分压网络来设定输出。
  • 参考公式(近似):Vout ≈ Vref × (1 + R1/R2)。在采用高阻值分压时,应考虑调节电流对误差的影响(Iadj × R1)。
  • 功耗与发热:器件以分流方式工作,功耗为 (Vin - Vout) × Ik(Ik 为通过器件的电流),在大电流或高压差情况下需评估和管理封装温升。

三、封装与引脚

  • 封装:SOT-23(3 引脚)——适合 SMT 安装与小型化设计。
  • 常见引脚功能:阴极(K)、阳极(A)、参考/基准(REF),引脚连接和功能请参照厂商数据手册以确保正确接线与散热设计。

四、典型应用场景

  • 可调线性稳压器和分流稳压电路(低成本精密参考)。
  • 开关电源误差放大/参考点(作为反馈元件替代复杂参考电路)。
  • 电池充电与电池管理系统(电压监测与限压)。
  • LED 驱动与恒流源(配合限流电阻实现恒流控制)。
  • 精密测量、AD 前端参考及温度补偿电路。

五、设计与使用建议

  • 保证阴极电流:电路设计时必须确保阴极电流不低于 1mA 才能维持标称精度与稳定调节;若工作电流较小,可并联上拉电阻以提高最低电流。
  • 散热评估:在高电压差或接近 150mA 输出电流工作时,计算功耗并核查 SOT-23 的允许结温;必要时采用大铜箔散热或外部散热方案。
  • 抗干扰与稳定性:在反馈回路中避免过大电容负载,必要时在参考端并联小电容做去耦,确保环路稳定。
  • 精度校准:若追求极限精度,建议在应用电路中加入微调电位器或制造时进行终检校准,补偿温漂与实际误差。

六、环境与可靠性

  • 工作温度范围 -25℃ 至 +85℃,适用于多数民用与工业场景,但在高温或高功耗工作点需注意降额使用。
  • 封装为 SOT-23,小体积便于批量装配,存储与回流焊工艺兼容性良好。具体可靠性测试与寿命数据请参考厂方完整规格书。

七、采购与配套信息

  • 品牌:SHIKUES(时科),型号:TL431N(SOT-23 封装)。
  • 购买时请确认批次规格、封装标识及原厂出货文件,若应用对温漂、噪声或长期稳定性有更高要求,可咨询供应商获取更详细的参数和样片测试报告。

总结:SHIKUES TL431N 是一颗性能均衡、应用广泛的可调并联电压基准器件,凭借 ±0.5% 的高精度、150mA 的输出能力以及 2.5V–36V 的宽工作电压,适合用于多种需要稳定基准电压或低成本调节功能的电子系统。在实际设计中注意最低阴极电流、功耗散热与环路稳定性,可以获得可靠且长期稳定的工作表现。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

Product sourcing intelligence

Model, package, availability, and BOM fit reviewed before quotation.

WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

Sourcing availability signal

Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.

Buyer sourcing scenarios

Examples of how common component sourcing requests are organized.

Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.

The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.