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BHFUSE BSMD0603-050-9V BSMD0603
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD0603-050-9V
- Type
- BHFUSE
- Minimum package
- 4000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD0603-050-9V
- Electronic Component
- 1
- Electronic Component
- 1.05mm
- Package
- 0603
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.027g
- Electronic Component
- 1.85mm
- Electronic Component
- 1.15mm
- Electronic Component
- 1
- Electronic Component
- 100ms
- Electronic Component
- BM0228072375
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 9V
- Power(Pd)
- 500mW
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD0603-050-9V 自恢复保险丝（BSMD0603-050-9V，BHFUSE/佰宏）产品概述
一、产品简介
BSMD0603-050-9V 为佰宏（BHFUSE）出品的0603封装自恢复保险丝（聚合物正温度系数元件，PTC），适用于微型便携电子设备的过流保护与短路保护。器件体积小、响应快、可自恢复，有利于节省PCB面积并提升系统可靠性。
二、主要参数
- 封装：0603（长 × 宽 × 高 = 1.85 mm × 1.05 mm × 1.15 mm）
- 额定电压：Vmax = 9 V
- 保持电流：Ihold = 500 mA（不触发时允许通过的最大稳定电流）
- 跳闸电流：Itrip = 1 A（典型触发电流）
- 最大冲击电流：Imax = 40 A（瞬态峰值能力）
- 初始阻值：Rmin ≈ 100 mΩ
- 跳断后阻值：R1max ≈ 800 mΩ
- 动作时间：约 100 ms（在指定过流条件下）
- 功耗：Pd = 500 mW
- 工作温度范围：-40 ℃ ～ +85 ℃
三、性能特点
- 小型化：0603封装方便在高密度PCB上应用。
- 自恢复：异常电流消失后器件自动冷却恢复导通，减少更换成本。
- 快速动作：典型动作时间约100 ms，可有效限制短路能量。
- 宽温度范围：适用于工业级及消费类产品。
- 良好瞬态承受力：可抵抗较高的浪涌电流（Imax=40 A），适合负载启动电流。
四、典型应用场景
- 手机配件、小型充电器、移动电源及蓝牙耳机等便携设备的输入保护。
- USB、I/O口和板级电源防护。
- 低电压电源轨（≤9V）过流保护场合。
五、封装与布板建议
0603标准焊盘即可布局，建议将器件置于电源入口或保护回路靠近待保护器件处，配合旁路电容和合理的散热铜箔以帮助快速散热与恢复。注意焊盘尺寸与回流工艺匹配，避免过量焊膏导致热阻变化。
六、选型与使用建议
- 确认工作电压≤9V；连续工作电流应低于Ihold（留有裕量通常取70%~80%）。
- 若系统存在较大启动浪涌，应对比Imax与启动电流，并考虑并联或采用缓启动方案。
- 在高环境温度下器件更易触发，需结合温升评估实际Ihold下降情况并做适当降额。
七、可靠性与测试建议
建议进行热阻、寿命测试与瞬态浪涌试验，验证在目标应用场景下的复位次数与阻值漂移（初始Rmin与触发后R1max）。同时关注焊接应力与包装运输环境对性能的影响。
使用时遵循datasheet具体曲线与测试条件，可获得长期稳定的过流保护效果。
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