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BHFUSE BSMD0805-110-12V BSMD0805
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD0805-110-12V
- Type
- BHFUSE
- Minimum package
- 4000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD0805-110-12V
- Electronic Component
- 1
- Electronic Component
- 1.5mm
- Package
- 0805
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.032g
- Electronic Component
- 2.2mm
- Electronic Component
- 1.2mm
- Electronic Component
- 1
- Electronic Component
- 300ms
- Electronic Component
- BM0228072393
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 12V
- Power(Pd)
- 1W
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD0805-110-12V 自恢复保险丝（BSMD0805-110-12V，BHFUSE / 佰宏）
一、产品简介
BSMD0805-110-12V 是一款0805封装的自恢复聚合物正温度系数（PPTC）过流保护器件，由BHFUSE（佰宏）生产。器件在正常工作电流下保持低阻抗，在过流或短路情况下通过升温使阻值显著上升，从而限制电流并保护电路；故障解除后可自动冷却复位，适合用于重复性过流保护场景。
二、主要技术参数
- 额定耐压（Vmax）：12 V
- 最大允许电流（Imax）：40 A
- 保持电流（Ihold）：1.1 A（持续不致跳闸的最大电流）
- 跳闸电流（Itrip）：2.2 A（在规定条件下开始明显升阻的电流）
- 消耗功率（Pd）：1 W
- 初始态阻值（Rmin）：35 mΩ（器件冷态低阻抗）
- 跳断后阻值（R1max）：230 mΩ（限制电流后的高阻态上限）
- 动作时间：300 ms（典型值，按厂方测试条件）
- 工作温度范围：-40 ℃ ~ +85 ℃
- 尺寸：2.2 mm × 1.5 mm × 1.2 mm（0805 SMD）
三、特点与优势
- 体积小，适合高密度表贴设计（0805封装）。
- 低初始电阻（35 mΩ），在正常工作下电压降小、发热低。
- 自恢复特性，无需更换，便于维护和长期可靠运行。
- 可承受峰值高电流（Imax 40 A），适合应对电路瞬态或短路冲击。
- 宽工作温度，适用多种环境条件。
四、典型应用场景
- 便携式设备和消费电子（电源输入保护、USB 供电线路）。
- 汽车电子（12V 子系统保护，注意与汽车规范配合使用）。
- 通信设备、工业控制模块和电池管理单元的过流保护。
- 任何要求尺寸受限且需可复位过流保护的电源入口或输出线路。
五、设计与使用建议
- 连续工作电流应留有裕量，建议正常电流显著低于 Ihold，以避免误动作。
- 置于电源入口或靠近被保护负载的位置，能最快速响应故障。
- PCB布局避免大面积铜箔直接散热到器件底部，否则会影响跳闸特性；如需更快散热可适当增大铜箔。
- 对于需要快速断开的高能量故障（如火花放电），PPTC 不可替代快速熔断器，应与其他保护器件结合使用。
- 回流焊兼容性请参照厂方焊接规范，建议在设计前获取并遵循佰宏的具体焊接曲线与装带资料。
六、可靠性与采购注意
- 工作温度范围 -40 ℃ 至 +85 ℃，在高温环境下跳闸电流与动作时间会有所变化，应在实际温度下验证。
- 订购型号请使用完整型号 BSMD0805-110-12V 并确认包装形式（常见为卷带供料）。
- 大批量设计前建议索取样品并进行过流、温升、重覆动作及环境应力测试以验证系统级表现。
如需进一步的电流-时间曲线、热阻数据或典型测试条件（测量电路、环境温度）等详细参数，可联系供货商或提供器件数据手册以进行深入验证。
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