WMSIC Electronic Components

LUTE 1812L075/48GR 1812L075

Model1812L075/48GR
Package1812
BrandLUTE
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
LUTE 1812L075 / 48GR
Type
LUTE
Minimum package
1500 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LUTE
Electronic Component
1812L075/48GR
Electronic Component
1
Electronic Component
3.41mm
Package
1812
Electronic Component
Resettable Fuse
Electronic Component
0.114g
Electronic Component
4.73mm
Electronic Component
2mm
Electronic Component
1
Electronic Component
200ms
Electronic Component
BM0264548606
Operating Temperature
40℃~+85℃
Voltage Rating(Vmax)
48V
Power(Pd)
1.2W

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

1812L075/48GR自恢复保险丝产品概述

1812L075/48GR是陆特(LUTE)推出的一款1812贴片封装自恢复保险丝,针对48V以下低压直流电路的过流保护需求设计,兼具低内阻、快速动作、宽温适应性等特点,可广泛应用于消费电子、工业控制、通信设备等领域,是替代传统一次性保险丝的高性价比方案。

一、核心性能参数深度解析

该产品的参数设计精准匹配中低功率电路的保护需求,关键参数解读如下:

  • 耐压(Vmax=48V):覆盖12V/24V/48V等主流低压直流系统,避免过压击穿风险,适配多数消费电子及工业设备电源;
  • 电流参数:
    • 保持电流(Ihold=750mA):电路正常工作电流≤750mA时保持导通,不影响设备功能(如智能手机充电电流一般在500mA-1A内,符合要求);
    • 跳闸电流(Itrip=1.5A):电流超过1.5A时200ms内快速动作,切断故障电路(如短路时能及时保护电池/芯片);
    • 最大电流(Imax=40A):可承受瞬间浪涌(如开机冲击、静电放电),不损坏器件;
  • 电阻特性:
    • 初始阻值(Rmin=90mΩ):低内阻大幅降低正常工作功耗(Pd=1.2W),减少发热(避免影响周边器件);
    • 跳断后阻值(R1max=500mΩ):动作后阻值稳定上升,确保故障状态下无大电流通过;
  • 工作温度(-40℃~+85℃):覆盖工业级宽温范围,适应严寒(如户外传感器)或高温(如车载设备)环境。

二、封装与物理特性

采用1812标准贴片封装,尺寸为4.73mm(长)×3.41mm(宽)×1.3mm(高),具备以下优势:

  • 体积紧凑:适配高密度PCB设计(如无线耳机充电盒、智能手表),不占用额外空间;
  • 贴片式结构:支持SMT自动化焊接,生产效率高,且焊接可靠性强(减少虚焊风险);
  • 行业兼容性:1812封装为通用规格,可直接替换同封装其他保险丝,无需修改PCB设计。

三、典型适用场景

结合参数特性,该产品主要应用于以下场景:

  1. 消费电子:
    • 智能手机/平板电池保护电路(防止过充/过放短路);
    • 无线耳机充电盒、智能手表电源输入保护;
    • 便携式电源(充电宝)输出过流防护(避免短路损坏电池);
  2. 工业控制:
    • 小型PLC的I/O端口保护(防止传感器短路损坏控制器);
    • 工业传感器模块(温度、压力传感器)电源保护;
  3. 通信设备:
    • 路由器、交换机48V电源输入模块;
    • 光纤收发器、无线AP过流防护;
  4. 车载电子(低压场景):
    • 车载USB充电口(12V系统);
    • 行车记录仪、氛围灯等小功率设备电源保护。

四、品牌与可靠性保障

陆特(LUTE)作为专注过流保护器件的品牌,1812L075/48GR的可靠性体现在:

  • 参数一致性:批量生产中阻值、动作时间波动极小,每颗器件性能稳定;
  • 循环寿命:多次动作后仍能自恢复,工业级应用循环次数可达数千次;
  • 环境验证:通过高低温、湿热、振动测试,适应严苛工况;
  • 环保合规:符合RoHS标准,满足出口及绿色制造要求。

五、选型与应用注意事项

为确保保护效果,需注意以下几点:

  1. 电流匹配:正常工作电流≤750mA,故障电流≥1.5A,避免误动作或保护延迟;
  2. 电压匹配:电路最大电压≤48V,严禁超压使用;
  3. 散热设计:虽功耗仅1.2W,但长时间高负载时需预留散热空间(避免与发热器件相邻);
  4. 焊接工艺:回流焊峰值温度≤230℃,防止损坏器件;
  5. 自恢复特性:故障排除后自动导通,但多次动作后阻值略有上升,需评估循环寿命是否满足需求。

六、产品价值总结

1812L075/48GR以“高性价比、小体积、宽适应性”为核心优势,解决了传统保险丝“故障后需更换”的痛点,同时平衡了低功耗与快速保护的需求。无论是消费电子的小型化设计,还是工业设备的宽温可靠性要求,均能提供稳定可靠的过流保护方案,是该领域的优选器件之一。

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