WMSIC Electronic Components

BOURNS MF-R010

ModelMF-R010
PackageThrough-hole
BrandBOURNS
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

20 specifications

Core information

Product name
BOURNS MF-R010
Type
BOURNS
Unit
Electronic Component
Minimum package
500 袋

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
BOURNS
Electronic Component
MF-R010
Electronic Component
1
Package
Through-hole
Electronic Component
Resettable Fuse
Electronic Component
0.493g
Electronic Component
1
Electronic Component
4s
Electronic Component
BM0264532946
Operating Temperature
40℃~+85℃
Voltage Rating(Vmax)
60V
Power(Pd)
380mW
Current(Imax)
40A
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.

BOURNS MF-R010 PTC自恢复保险丝产品概述

一、产品定位与核心功能

BOURNS MF-R010是一款径向插件式聚合物正温度系数(PTC)自恢复保险丝,专为低压小电流电路的过流保护设计。区别于一次性保险丝,其核心优势在于过流故障排除后自动复位,无需手动更换,可长期重复使用,有效降低电路维护成本与 downtime。产品主要用于防止负载、电源模块因过流(如短路、过载)损坏,是消费电子、通信、工业控制等领域的可靠防护器件。

二、关键电气参数详解

MF-R010的核心参数明确了其适用场景与防护边界,具体如下:

参数项 规格值 技术意义 最大耐压(Vmax) 60V 直流/交流电路中允许的最高工作电压,超过则可能被击穿,需严格匹配电路电压 最大浪涌电流(Imax) 40A 瞬间可承受的最大浪涌电流(如开机尖峰、静电放电),不触发保护 保持电流(Ihold) 100mA(25℃) 常温下电路正常工作允许的最大持续电流,低于此值时保险丝保持低阻导通 跳闸电流(Itrip) 200mA(25℃) 触发保护的最小电流,电流达到此值时,保险丝会在规定时间内跳断 动作时间 4s(Itrip下) 电流达到200mA时,4秒内完成电阻急剧增大(跳断),及时切断过流路径 初始态阻值(Rmin) 2.5Ω 常温未触发时的最小电阻,确保电路正常导通时损耗低、压降小 跳断后阻值(R1max) 7.5Ω 触发保护后的最大电阻,将电路电流限制在安全范围(通常<1mA) 消耗功率(Pd) 380mW 正常工作时的功率损耗,低损耗不影响电路整体效率 工作温度范围 -40℃~+85℃ 宽温适应户外、工业、车载等复杂环境,无需额外温控措施

三、封装与物理特性

MF-R010采用径向插件封装,引脚设计符合传统PCB焊接工艺,无需特殊贴装设备,适合批量生产与手工焊接。封装体积小巧(典型尺寸约φ5×10mm,参考同类产品),机械强度可靠,抗振动、冲击性能满足IEC 60068等标准,可适应车载、工业设备的振动环境。

四、工作原理与核心优势

工作原理

PTC材料由聚合物基体与导电填料(如炭黑)复合而成:

  • 常态:常温下导电填料形成连续通路,电阻低(<2.5Ω),允许电路正常电流通过;
  • 过流触发:当电流超过Ihold时,焦耳热使温度升高,超过聚合物居里点后,导电通路断裂,电阻急剧增大(至7.5Ω以上),限制电流至安全范围;
  • 自动复位:故障排除后(如短路移除),温度下降,导电通路恢复,电阻回到低阻态,无需手动操作即可重新导通。

核心优势

  1. 自恢复免维护:多次过流触发后自动复位,减少更换成本与停机时间;
  2. 宽浪涌耐受:40A最大浪涌电流,可应对开机、静电等瞬间尖峰,避免误触发;
  3. 低损耗高效率:380mW功率损耗,对电路正常工作影响极小;
  4. 宽温可靠:-40℃~+85℃覆盖大多数应用场景,长期工作性能稳定;
  5. 快速响应:200mA跳闸电流下4秒内动作,及时保护敏感负载(如IC、传感器)。

五、典型应用场景

MF-R010的参数匹配低压小电流电路,典型应用包括:

  1. 消费电子:手机、平板、智能穿戴的电池保护电路(100mA保持电流匹配小电流负载);
  2. 通信设备:路由器、交换机的端口保护(60V耐压满足通信电源电压);
  3. 工业控制:小型传感器、PLC模块的过流防护(宽温适应工业现场);
  4. 车载低压场景:仪表盘背光、胎压传感器等小功率设备的保护;
  5. 电源适配器:5V/12V小功率适配器的输出端过流保护。

六、使用注意事项

为确保防护效果与可靠性,需注意以下要点:

  1. 电流匹配:电路正常工作电流需小于100mA,避免因持续过载误触发;
  2. 电压匹配:工作电压不超过60V,防止击穿损坏;
  3. 焊接规范:插件焊接温度≤260℃,时间≤3秒,避免高温破坏PTC材料;
  4. 散热要求:安装时需预留散热空间,避免环境温度过高导致误触发;
  5. 浪涌补充:若电路浪涌超过40A(如雷击),需配合TVS管等器件补充防护。

总结

BOURNS MF-R010 PTC自恢复保险丝凭借稳定的电气性能、宽温适应性与自恢复特性,成为低压小电流电路过流保护的高性价比选择。其在消费电子、通信、工业等领域的广泛应用,有效提升了电路的安全性与可靠性,降低了维护成本。

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