WMSIC Electronic Components

BELLING BL8503-30PSM BL8503

ModelBL8503-30PSM
PackageSOT-89
BrandBELLING
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
BELLING BL8503-30PSM
Type
BELLING
Minimum package
1000 卷

Technical parameters

Electronic Component
Electronic Component
Electronic Component
500mV@(200mA)
Electronic Component
BELLING
Electronic Component
BL8503-30PSM
Electronic Component
1
Package
SOT-89
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.153g
Electronic Component
1
Features
Electronic Component
Electronic Component
BM0211405069
Operating Temperature
40℃~+125℃@(Ta)
Operating Voltage
8V
Output
Electronic Component
Output Voltage
3V
Output Current
250mA

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

BL8503-30PSM线性稳压器产品概述

一、产品定位与核心功能

BL8503-30PSM是贝岭(BELLING) 推出的一款固定输出线性稳压器(LDO),采用SOT-89贴片封装,核心功能为将输入电压稳定输出为3V固定值,同时内置过流保护电路,可满足低功耗、小型化电子设备的稳压需求。该器件针对静态电流、压差及工作温度范围的严格要求设计,是便携式设备、工业传感器及汽车电子辅助电路的常用稳压方案。

二、关键电气参数详解

该器件的核心电气参数直接决定应用边界,关键参数如下:

  • 输入输出特性:工作电压(输入电压)典型值为8V,输出电压固定为3V,最大输出电流可达250mA,可满足中小功率电子模块的供电需求;
  • 低压差性能:在200mA典型负载下,压差仅为500mV(即输入电压仅需高于输出电压0.5V即可正常稳压),适配输入电压接近输出电压的场景(如输入3.5V可稳定输出3V);
  • 超低静态电流:静态电流(Iq)仅3uA,远低于常规LDO水平,可大幅降低设备待机功耗,延长电池供电产品的续航时间;
  • 过流保护:内置限流电路,输出电流超额定值时自动切断或限流,避免负载短路/过载损坏器件及后端电路;
  • 宽温工作范围:环境温度(Ta)覆盖-40℃~+125℃,符合工业级及部分汽车电子的温度要求,极端环境下仍稳定工作。

三、封装与可靠性设计

BL8503-30PSM采用SOT-89贴片封装,具备以下优势:

  • 小型化:典型尺寸约2.9mm×2.5mm×1.1mm,适合对空间要求严格的小型设备(如智能手环、无线传感器节点);
  • 散热性:引脚布局利于热量散发,额定电流范围内无过热风险,长期工作稳定性高;
  • 工业级可靠性:封装材料及工艺符合工业标准,配合宽温范围,可在高低温、湿度变化等恶劣环境下长期可靠运行。

四、典型应用场景

结合参数特性,该器件的典型应用包括:

  1. 便携式电池设备:智能穿戴(手环、手表)、无线耳机、便携式医疗仪器等,3uA静态电流延长纽扣电池/小型锂电池续航;
  2. 工业传感器模块:温度/压力传感器的信号调理电路,宽温范围适配工业现场极端温度,低压差适配低输入电压场景;
  3. 汽车电子辅助电路:车载USB接口、仪表盘辅助模块等,宽温及过流保护符合汽车电子可靠性要求;
  4. 低功耗物联网终端:智能门锁、环境监测节点等,低静态电流支持长期待机,稳定3V输出为MCU、无线模块供电。

五、产品优势总结

BL8503-30PSM的核心优势可归纳为“三低一宽”:

  • 低静态电流:3uA待机功耗,适配电池供电产品;
  • 低压差:200mA负载下仅500mV,适配输入接近输出的场景;
  • 小封装:SOT-89贴片封装,满足小型化设计;
  • 宽温范围:-40℃~+125℃,覆盖工业级及部分汽车电子应用。

该器件凭借稳定稳压、完善保护及高可靠性,成为中小功率电子设备的优选稳压方案。

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.