WMSIC Electronic Components

Brightking SMD1812B110TF/24 SMD1812B110TF

ModelSMD1812B110TF/24
Package1812
BrandBrightking
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
Brightking SMD1812B110TF / 24
Type
BRIGHTKING
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
SMD1812B110TF/24
Electronic Component
1
Electronic Component
3.41mm
Package
1812
Electronic Component
Resettable Fuse
Electronic Component
0.287g
Electronic Component
4.73mm
Electronic Component
2mm
Electronic Component
1
Electronic Component
500ms
Electronic Component
BM0257694887
Operating Temperature
40℃~+85℃
Voltage Rating(Vmax)
24V
Power(Pd)
800mW

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

SMD1812B110TF/24 产品概述

一、产品简介

SMD1812B110TF/24 是台湾 Brightking(君耀)出品的自恢复保险丝(PTC resettable fuse),封装为 SMD 1812(尺寸约 4.73 × 3.41 × 2.00 mm),额定耐压 24V。该器件在过流或短路情况下通过材料电阻升高而限制电流,故障解除后能自动冷却恢复初始阻值,适合板级过流保护与重复保护场景。

二、主要电气参数

  • 耐压 Vmax:24 V
  • 持续电流 Ihold:1.10 A(典型保持电流)
  • 跳闸电流 Itrip:1.95 A(典型触发电流)
  • 最大可承受电流 Imax:20 A(瞬态冲击或开断能力)
  • 功耗 Pd:800 mW(稳态耗散或热特性参考)
  • 初始态阻值 Rmin:60 mΩ
  • 跳断后阻值 R1max:200 mΩ
  • 动作时间:≤ 500 ms
  • 工作温度:-40 ℃ ~ +85 ℃

三、主要特点

  • 自动复位:故障恢复后无需更换,维护成本低。
  • 低导通电阻:初始阻值约 60 mΩ,压降小,适用于对电压损耗敏感的电路。
  • 快速响应:典型动作时间 ≤500 ms,可迅速限制过流。
  • 紧凑封装:1812 SMD 体积小,利于高密度 PCB 布局。
  • 宽温适应:-40 ℃ 至 +85 ℃ 的工作温度范围,适用于一般工业与消费类应用。

四、典型应用场景

  • USB/电源管理线路与外设保护(支持 5V/12V/24V 系统)
  • 电池组与充电器过流保护(小电流恒流场合)
  • 工控与通信设备的模块级保护
  • LED 驱动、摄像头、电机控制小电流回路的短路保护

五、选型与使用建议

  • 在选型时以 Ihold 与 Itrip 为主:若正常工作电流接近或大于 Ihold,应选择额定更高的型号以避免不必要的触发。
  • 注意环境温度影响:保持电流 Ihold 通常以 +23 ℃ 测得,环境温度上升将降低有效保持电流,需适当留有裕量。
  • PCB 布局:为减少发热,器件应置于有热扩散路径的铜箔区,考虑焊盘加宽与散热铜皮。
  • 回流焊接:遵循制造商无铅回流工艺建议,避免长时间高温暴露以防材料性能退化。

六、可靠性与安全注意

  • 本器件为自恢复型过流保护元件,不作短路“熔断”替代,无法在极高能量故障下完全替代熔断器或断路器。
  • 对于存在高能量瞬态或持续大电流故障的系统,应与其他保护元件(如熔断器、限流电阻、热断路器)配合使用。
  • 储存与使用时避免潮湿和化学腐蚀性环境,焊接后建议按 IPC/JEDEC 标准完成清洁与可靠性验证。

总结:SMD1812B110TF/24 以其低阻、自动复位与小型 SMD 方案,适用于需重复过流保护且对体积与压降有要求的电子设备。选型时应综合考虑工作电流、环境温度及可能的故障能量,确保系统长期可靠运行。

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.