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BHFUSE BSMD1206L-300 BSMD1206L
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD1206L-300
- Type
- BHFUSE
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD1206L-300
- Electronic Component
- 1
- Package
- 1206
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.039g
- Electronic Component
- 1
- Electronic Component
- BM0229474023
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 6V
- Power(Pd)
- 1.2W
- Current(Imax)
- 50A
- Electronic Component
- Electronic Component
- Electronic Component
- 4000
- Latching Current(Ihold)
- 3A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD1206L-300 产品概述
一、产品简介
BSMD1206L-300 是佰宏（BHFUSE）出品的一款表面贴装自恢复保险（PTC resettable fuse），1206 封装，针对电路短路和过流保护设计。器件在正常工作时阻值极低，遇到过流时通过温升使阻值迅速增大，从而限制电流并保护后端电路，故障消除后可自动恢复。
二、主要性能参数
- 品牌：BHFUSE（佰宏）
- 型号：BSMD1206L-300
- 封装：1206（表面贴装）
- 初始态阻值 Rmin：3 mΩ
- 跳断后阻值 R1max：30 mΩ
- 保持电流 Ihold：3 A
- 跳闸电流 Itrip：6 A
- 最大电压 Vmax：6 V
- 最大允许电流 Imax：50 A（瞬态）
- 最大耗散功率 Pd：1.2 W
- 工作温度范围：-40 ℃ ~ +85 ℃
三、关键特性与优势
- 低初始阻值：3 mΩ 的初始阻值保证了在正常工作下对信号与供电线路的压降极小，适合对压降敏感的应用。
- 可恢复保护：过流保护后无需更换元件，降低维护成本并提高系统可靠性。
- 快速响应：6 A 跳闸设定可以在过流事件发生时迅速限制电流，保护下游器件。
- 宽温度范围：-40 ～ +85 ℃ 满足多环境使用要求。
- 大电流承受能力：规定的瞬态最大电流能力使其在瞬态冲击条件下更有余量。
四、典型应用场景
- USB、电源接口、充电线路的短路与过流保护；
- 汽车电子子系统（非高温区）中的保护元件；
- 通信设备、工业控制模块、电池管理外围保护；
- 需低压降、高可靠性保护的小型电子设备。
五、选型与使用注意事项
- 匹配电压与功耗：工作电压应低于 6 V，设计时考虑 Pd=1.2 W 的耗散能力与 PCB 散热条件。
- 电流裕量：Ihold 为 3 A，若电路工作电流接近或超过该值，应选择更高规格型号或并联设计（并联需谨慎考虑均流）。
- 温度影响：在高环境温度下 Itrip/Ihold 会发生偏移，应用时应进行温度下的实际验证。
- 过压/瞬态：对于高能量瞬态或雷击类事件，单元可能不足以吸收，应与抑制器件（TVS）配合使用。
六、封装与安装提示
1206 表面贴装易于自动贴装与回流焊，但需遵循制造商的焊接温度与时间建议，保证焊点可靠且避免过热引起性能漂移。PCB 设计时保留足够的散热铜箔并优化过孔布局，可提升器件稳态耗散能力与重复跳闸后的恢复性能。
如需样品、详细电气曲线或可靠性试验报告，可联系供应商获取完整数据手册以完成最终的电路验证与合规测试。
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