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BHFUSE BSMD1210-020-30V BSMD1210
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD1210-020-30V
- Type
- BHFUSE
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD1210-020-30V
- Electronic Component
- 1
- Electronic Component
- 2.8mm
- Package
- 1210
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.04g
- Electronic Component
- 3.5mm
- Electronic Component
- 1.1mm
- Electronic Component
- 1
- Electronic Component
- 20ms
- Electronic Component
- BM0265723830
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 30V
- Power(Pd)
- 600mW
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD1210-020-30V 自恢复保险丝产品概述
BSMD1210-020-30V是佰宏（BHFUSE）推出的1210贴片封装自恢复保险丝，专为低压小电流电路的过流/过温保护设计。该器件结合快速响应、低功耗、宽温适应与可重复使用特性，适配消费电子、汽车电子、工业控制等多领域高密度PCB布局，是替代传统一次性保险丝的高效方案。
一、核心电气参数解析
该型号参数经优化，匹配多数低压电路保护需求：
- 耐压与电流能力：最大工作电压30V，适配5V/12V/24V等低压系统；保持电流（Ihold）200mA（正常工作不触发的最大电流），跳闸电流（Itrip）400mA（触发保护的最小电流），最大故障电流（Imax）40A可承受短时间大冲击；
- 响应与阻值特性：动作时间仅20ms，快速切断过流；初始态最小阻值400mΩ（低阻减少功耗），跳断后最大阻值5Ω（高阻限制故障电流）；
- 功耗与温度范围：正常工作功耗600mW，符合小功率电路能效要求；工作温度覆盖-40℃至+85℃，适配低温户外、高温车载等场景。
二、封装与物理尺寸
采用1210英制贴片封装，实际测量尺寸为长3.5mm×宽2.8mm×高1.1mm，体积紧凑，支持SMT自动化贴装，可显著节省PCB空间，尤其适配智能手机、智能穿戴、小型控制器等对尺寸敏感的设备。封装符合RoHS环保标准，满足国际市场合规要求。
三、典型应用场景
结合参数特性，主要应用于：
- 消费电子：智能手机/平板的电池保护电路、USB接口过流防护、蓝牙耳机充电仓过流保护；
- 汽车电子：车载仪表盘传感器、中控屏背光电路、胎压监测（TPMS）节点的过温过流保护（宽温适配车载环境）；
- 工业控制：小型PLC的I/O端口保护、温湿度传感器节点过流防护；
- 通信设备：路由器/交换机以太网端口保护、无线AP电源输入过流保护。
四、基本工作原理
基于正温度系数（PTC）聚合物材料，工作分三阶段：
- 正常态：电流≤200mA时，器件呈低阻（≤400mΩ），功耗低不影响电路；
- 触发态：电流≥400mA时，焦耳热使PTC阻值骤升至5Ω以上，限制电流保护电路；
- 恢复态：故障排除后温度下降，阻值自动恢复低阻，无需更换可重复使用。
五、性能优势总结
- 快速响应：20ms动作时间及时切断过流，减少电路损坏；
- 低功耗：初始低阻（400mΩ）使正常功耗仅600mW，不影响设备能效；
- 宽温可靠：-40℃~+85℃适配多场景（含车载、户外低温）；
- 小体积高密度：1210封装节省PCB空间，适合小型化设备；
- 可重复使用：故障恢复后自动复位，降低维护成本；
- 高可靠性：跳断后阻值稳定（≤5Ω），有效限制故障电流。
该型号经温度循环、耐湿等可靠性测试，参数匹配性与稳定性获市场验证，是低压小电流电路过流保护的优选方案。
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