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BHFUSE BSMD1812-014-60V BSMD1812
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD1812-014-60V
- Type
- BHFUSE
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD1812-014-60V
- Electronic Component
- 1
- Package
- 1812
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.11g
- Electronic Component
- 1
- Electronic Component
- 150ms
- Electronic Component
- BM0229474013
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 60V
- Power(Pd)
- 800mW
- Current(Imax)
- 40A
- Electronic Component
- Electronic Component
- Electronic Component
- 1500
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD1812-014-60V 自恢复保险丝 产品概述
一、产品简介
BSMD1812-014-60V 为佰宏（BHFUSE）出品的自恢复聚合物保险丝（PTC），SMD 1812 封装。器件在正常工作电流下呈现低阻抗，在过流或短路时迅速升温、阻值显著上升以限制电流，故障解除并冷却后可自动恢复导通，适用于需要重复保护的小型电源与接口电路。
二、主要电气参数
- 最大耐压 (Vmax)：60 V
- 最大允许电流 (Imax)：40 A（短时浪涌能力）
- 保持电流 (Ihold)：140 mA（器件持续工作而不触发的最大电流）
- 跳闸电流 (Itrip)：340 mA（典型触发电流）
- 功耗 (Pd)：800 mW（稳定条件下额定功耗）
- 初始态电阻 (Rmin)：650 mΩ
- 跳断后最大阻值 (R1max)：6 Ω
- 动作时间：约 150 ms
- 工作温度范围：-40 ℃ ~ +85 ℃
三、性能特点
- 快速响应：典型动作时间 150 ms，在短路或严重过流下迅速限制电流。
- 可回复性：保护后无须更换，节省维护成本。
- 低稳态电阻：初始阻值 650 mΩ，降低正常工作功耗和热量。
- 高浪涌承受：40 A 短时承受能力，适应启动电流或突发浪涌。
- 紧凑封装：1812 SMD 适合表面贴装自动化生产。
四、典型应用场景
- USB、数据接口与便携设备电源保护
- 工业与仪器的局部过流保护
- 电池管理与充电模块（在60 V 以内）
- 通信设备与电源模块防护
五、选型与使用建议
- 工作电流选择：Ihold 应大于设备连续最大工作电流（含DC偏差）；若有较大浪涌，确保 Imax 能承受瞬态。
- 触发裕量：Itrip 应低于被保护电路可接受的最大故障电流，以保证及时断开。
- 环境影响：高温环境会降低 Ihold，使用时留有裕量并参照供应商温度特性曲线。
- 布局注意：避免紧邻高热源，良好散热与间距有助于恢复时间与稳定性。
六、装配与注意事项
- 适用于常规回流焊工艺；避免过度机械应力与重复高温循环。
- 测试时建议先测量初始阻值以判定器件是否合格。
- 重复频繁触发可能影响寿命与恢复性能，设计时应诊断并消除根本故障。
BSMD1812-014-60V 以其小型化、可恢复保护与较高浪涌承受能力，适合对体积、可靠性有要求的中低电压防护场合。选型时应结合实际工作电流、环境温度及冲击电流特性进行综合评估。
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