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BHFUSE BSMD0603-075-6V BSMD0603
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD0603-075-6V
- Type
- BHFUSE
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD0603-075-6V
- Electronic Component
- 1
- Electronic Component
- 1.05mm
- Package
- 0603
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.026g
- Electronic Component
- 1.85mm
- Electronic Component
- 1.15mm
- Electronic Component
- 1
- Electronic Component
- 100ms
- Electronic Component
- BM0226603272
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 6V
- Power(Pd)
- 500mW
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD0603-075-6V 自恢复保险丝（BHFUSE/佰宏）产品概述
一、产品简介
BSMD0603-075-6V 为佰宏（BHFUSE）出品的0603封装自恢复式PTC保险元件（Polyfuse），体积小、响应快，适用于微型化电子设备的过流保护。外形尺寸为长1.85mm × 宽1.05mm × 高1.15mm，专为狭小空间和表贴工艺设计。
二、主要参数
- 封装：0603（SMD）
- 阻值（初始）：Rmin = 60 mΩ
- 跳断后最大阻值：R1max = 450 mΩ
- 额定耐压：Vmax = 6 V
- 跳闸电流：Itrip = 1.5 A（典型）
- 保持电流：Ihold = 750 mA
- 最大通过电流（瞬时/冲击）：Imax = 40 A
- 动作时间：100 ms（至跳闸）
- 最大耗散功率：Pd = 500 mW
- 工作温度范围：-40 ℃ ~ +85 ℃
- 品牌：BHFUSE（佰宏）
三、性能与工作原理
该器件为正温度系数（PTC）材料制成的自恢复保险丝，正常工作时呈低阻抗（约60 mΩ），允许电路正常供电。当电流超过保持电流并接近或超过跳闸电流（1.5 A）时，内部温度上升导致材料电阻迅速增加至高阻态（跳断后≤450 mΩ），限制电流，保护下游电路。故障解除并冷却后，元件会自动恢复到低阻态，适合重复触发场合。
四、典型应用场景
- USB、充电口与数据接口过流保护
- 手机、平板、小型便携设备的次级电源保护
- 物联网终端、可穿戴设备与小电流传感器模块
- 电池管理与充电电路的短路/过流防护
- 小型电源模块、芯片组周边保护
五、选型与使用建议
- 正常工作电流应低于Ihold（750 mA），并留有适当裕量；若常态电流接近Ihold，应选用更高规格型号。
- 对于可能出现短时冲击（如插拔或启动浪涌）的应用，Imax=40 A 表明短时承受能力，但不能作为长期工作电流。
- 考虑环境温度对Ihold/Itrip的影响：高温会降低保持电流值，应按最高工作温度下的有效参数进行保守选型。
- 电路工作电压不应超过Vmax（6 V）。
六、封装与焊接建议
- 采用标准0603 PCB焊盘布局并遵循制造商推荐的焊盘尺寸和间距，确保可靠焊接和散热。
- 建议使用标准回流焊工艺；避免长时间过高温度以防材料性能退化。
- 焊接后建议进行清洗以除去残留助焊剂，避免长期影响元件性能。
七、可靠性与检测
- 出厂前通常进行温升、冲击电流、寿命及耐压测试，用户在关键应用中可做样品验证（温度循环、长期老化、重复跳闸测试）。
- 设计时应配合熔断时间、功耗限制和PCB散热评估，保证在异常条件下能可靠触发并在故障解除后恢复。
总结：BSMD0603-075-6V 以其超小封装和明确的电气特性，适合狭小空间内对小电流到中等电流的过流保护需求。合理的选型和PCB热管理能确保其长期稳定工作，实现对电路的高效保护。
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