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Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
Littelfuse MINIASMDC050F-2 MINIASMDC050F
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Littelfuse MINIASMDC050F-2
- Type
- LITTELFUSE
- Minimum package
- 2000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- LITTELFUSE
- Electronic Component
- MINIASMDC050F-2
- Electronic Component
- 1
- Electronic Component
- 3.2mm
- Package
- 1812
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.094g
- Electronic Component
- 5.4mm
- Electronic Component
- 0.62mm
- Electronic Component
- 1
- Electronic Component
- 150ms
- Electronic Component
- BM0229356679
- Voltage Rating(Vmax)
- 24V
- Power(Pd)
- 800mW
- Current(Imax)
- 100A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MINIASMDC050F-2 产品概述
一、产品简介
MINIASMDC050F-2 是 Littelfuse（美国力特）推出的一款面向表面贴装电路保护的可复位聚合物正温度系数（PTC）自恢复保险器。该元件在过流或短路情况下迅速升阻限流，故障消除后可自动恢复初始低阻态，适用于需要多次保护且不便更换熔断器的场合。
二、主要电气参数
- 保持电流（Ihold）：0.5 A（典型）
- 触发电流（Itrip）：约 1 A（典型）
- 最大工作电压（Vmax）：24 VDC
- 最大中断电流（Imax）：100 A（瞬时）
- 功耗（Pd）：0.8 W
- 初始态阻值（Rmin）：0.15 Ω
- 跳断后最大阻值（R1max）：1 Ω
- 触发时间：约 0.15 s（视过流倍数与环境温度而定）
三、封装与机械尺寸
- 封装形式：1812 SMD（T/R 卷装）
- 宽度：3.2 mm
- 长度：5.4 mm
- 适用于标准 SMD 焊盘，便于自动贴片与回流焊工艺集成。
四、典型应用场景
- USB、通信接口及外设电源保护（5–24V 系统）
- 电池管理与便携设备短路保护
- 车载低压子系统与工业控制板的过流保护（在符合系统要求下）
- 需要可复位保护、降低维护成本与避免人为更换熔断器的场合
五、选型与使用注意事项
- 选择时以系统正常工作电流小于 Ihold 为前提，并预估可能的短时浪涌是否会触发器件。
- 触发时间受过流倍数、器件温度和环境散热影响，设计时应留有裕量。
- 该器件以升阻限流为主，非瞬断型熔断器，不能替代针对高能瞬态或高短路能量的一次性熔丝。
- 建议按照制造商推荐的 PCB 焊盘与回流焊工艺进行安装，避免长时间高温影响器件特性。
- 在高温或受限散热环境中，应适当降额使用以保证可靠性。
六、优势与对比
MINIASMDC050F-2 结合了 Littelfuse 的工艺与 1812 SMD 兼容性，体积小、安装方便，能在故障后自动恢复，从而降低维护频次和备件需求。相较于一次性熔断器，更适合需要可复位保护和频繁短路事件容忍的应用，但在高能量断路能力方面需与传统熔断器或电子断路器权衡选择。
如需进一步的电气曲线、热时特性曲线或 PCB 布局建议，可参考 Littelfuse 官方数据手册或联系供应渠道获取完整技术资料。
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