Model & package intelligence
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BHFUSE BSMD0603-004-24V BSMD0603
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD0603-004-24V
- Type
- BHFUSE
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD0603-004-24V
- Electronic Component
- 1
- Electronic Component
- 1.05mm
- Package
- 0603
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.026g
- Electronic Component
- 1.85mm
- Electronic Component
- 1mm
- Electronic Component
- 1
- Electronic Component
- 1s
- Electronic Component
- BM0229474021
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 24V
- Power(Pd)
- 500mW
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD0603-004-24V 产品概述
一、产品简介
BSMD0603-004-24V 是 BHFUSE（佰宏）出品的一款 0603 封装表面贴装微型自恢复保险丝（PTC / Polymeric PTC Resettable Fuse）。该器件体积小巧，适用于空间受限的便携式电子设备与信号/低功率保护场合，能在过流或短路条件下快速触发限流并在故障消除后自动恢复。
二、主要规格
- 品牌 / 型号：BHFUSE / BSMD0603-004-24V
- 封装：0603（长度 1.85 mm × 宽度 1.05 mm × 高度 1.00 mm）
- 初始态阻值 Rmin：4 Ω
- 跳断后阻值 R1max：40 Ω
- 额定耐压 Vmax：24 V
- 跳闸电流 Itrip：120 mA（典型）
- 保持电流 Ihold：40 mA（典型）
- 最大通过电流 Imax：20 A（短时冲击能力）
- 最大功耗 Pd：500 mW
- 动作时间：1 s（达到触发条件所需时间）
- 工作温度范围：-40 ℃ ～ +85 ℃
三、产品特点
- 体积微小，适合 0603 PCB 布局，节省空间。
- 初始阻值低，能在正常工作电流下保持较小压降。
- 快速动作（约 1 秒）对短路、持续过流具有有效保护能力。
- 自恢复特性：故障消除后恢复导通，降低维护成本与替换频率。
- 可承受较大的瞬态冲击电流（Imax），提高系统可靠性。
四、典型应用场景
- 移动设备与可穿戴终端的信号线与低功率总线保护。
- 摄像头、传感器、蓝牙/Wi‑Fi 模块等外围子板的电源保护。
- IoT 设备、供电口（USB、UART 电源）及电子测试设备的过流保护。
- 需要自动复位保护且空间受限的消费电子产品。
五、使用建议与注意事项
- 推荐在电源输入或保护目标靠近处布局，串联放置以实现最佳保护效果。
- 由于器件为热敏自恢复件，长时间接近 Itrip 会导致持续限制，应留有热余量并考虑环境温度对动作点的影响。
- Imax 为短时冲击能力，非长期工作电流；长期工作电流应小于 Ihold 并考虑 Pd 与环境散热条件。
- 焊接时遵循厂商推荐的回流曲线及焊盘设计，避免过度热应力影响可靠性。
- 在高湿或腐蚀性环境中需采取防护措施，避免元件外壳受损或导电路径变化。
六、可靠性与存储
- 工作温度范围宽，适用于常见工业与消费类环境。
- 建议干燥、常温保存，避免长期暴露在高湿、高盐雾环境中。
- 出厂前经过常规电气与温度循环测试，建议在设计验证阶段进行实际应用场景的加速老化与冲击测试。
以上为 BSMD0603-004-24V 的概述与实用建议。具体电气特性（如温度依赖的 Ihold/Itrip 曲线、回流焊工艺参数和寿命试验数据）请参见 BHFUSE 提供的详细数据手册或联系厂家技术支持以获取最准确的设计依据。
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