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BOURNS MF-SM100/33-2
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BOURNS MF-SM100/33-2
- Type
- BOURNS
- Minimum package
- 2000
Technical parameters
- Electronic Component
- BOURNS
- Electronic Component
- MF-SM100/33-2
- Electronic Component
- 1
- Electronic Component
- 5.4mm
- Package
- SMD,7.3x5.4mm
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.58g
- Electronic Component
- 7.3mm
- Electronic Component
- 3mm
- Electronic Component
- 1
- Electronic Component
- 500ms
- Electronic Component
- BM0209680532
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 33V
- Power(Pd)
- 1.7W
- Current(Imax)
- 40A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MF-SM100/33-2（BOURNS）产品概述
一、产品简介
MF-SM100/33-2 为 BOURNS 出品的表面贴装可复位自恢复保险（PTC Resettable Fuse），设计用于在过流或短路情况下提供可重复的过流保护。器件典型封装尺寸约 7.3 × 5.4 × 3 mm，适配 SMD 焊盘安装，提供带卷盘（T/R）供应，便于自动贴片生产线使用。
二、主要电气与机械参数
- 保持电流（Ihold）：1.1 A（典型）
- 动作电流（Itrip）：2.2 A（典型）
- 最大工作电压（Vmax）：33 V
- 峰值容许电流（Imax）：40 A
- 初始态电阻（Rmin）：0.12 Ω
- 跳断后最大电阻（R1max）：0.41 Ω
- 功耗能力（Pd）：1.7 W
- 典型动作时间：约 0.5 s（在规定过流条件下）
- 工作温度范围：-40 ℃ ~ +85 ℃
- 尺寸（典型）：长 7.3 mm × 宽 5.4 mm × 高约 3 mm
- 封装形式：SMD，适配标准焊盘
三、产品特性与优势
- 可复位：过流解除后器件温度恢复，阻值返回到低阻态，恢复电路通断，无需更换元件。
- 小封装、高密度：7.3×5.4 mm 紧凑体积，适用于空间受限的消费电子和工业设备。
- 高瞬态承受能力：最高可承受 40 A 峰值电流，能应对白色家电、电源输入以及电机驱动等瞬态冲击。
- 宽温范围工作：-40～+85 ℃ 适应大多数商业与工业环境。
- 规范化供应：SMD + T/R 卷盘包装，满足自动化贴装与量产需求。
四、典型应用场景
- 移动与便携设备电源线、充电保护
- 工业控制模块输入保护、传感器供电防短路
- 电机驱动与继电器线圈保护（用于抑制反复短路或卡住情况）
- 汽车电子辅助回路（需结合环境温度与车规要求评估）
- 各类消费电子、通信设备和电源适配器的过流保护
五、选型与应用注意事项
- 工作点裕量：设计中应使正常工作电流低于 Ihold，避免长期靠近 Ihold 导致频繁动作或温升。
- 温度影响：环境温度升高会降低动作电流阈值，设计时应考虑最坏工况（高温+负载）下的动作情况。
- 焊盘与散热：尽量按厂商推荐焊盘布局设计，保证良好焊接与热传导，避免局部过热影响重复动作性能。
- 初次上电冲击：若电路存在较大浪涌（如电感反向或充电电容），需评估器件能否承受冲击电流或在前端加限制元件（如限流电阻）。
- 可靠性测试：在实际应用中，建议做温度循环与反复动作寿命验证，确认在目标环境下性能稳定。
六、结论
MF-SM100/33-2 是一款适合中等电流保护需求的 SMD 可复位保险，兼顾体积与承载能力，适用于多种消费与工业场景。合理的电气裕量、良好的散热与正确的焊接工艺，可确保长期稳定的过流保护性能。如需更具体的焊盘建议、热特性曲线或寿命数据，建议参考 BOURNS 官方数据手册或联系供应商获取完整规格说明书。
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