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BHFUSE BSMD1812-200-8V BSMD1812
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD1812-200-8V
- Type
- BHFUSE
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD1812-200-8V
- Electronic Component
- 1
- Electronic Component
- 3.41mm
- Package
- 1812
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.131g
- Electronic Component
- 4.73mm
- Electronic Component
- 1.3mm
- Electronic Component
- 1
- Electronic Component
- 2s
- Electronic Component
- BM0229474032
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 8V
- Power(Pd)
- 1W
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD1812-200-8V 产品概述
一、产品简介
BSMD1812-200-8V 是佰宏（BHFUSE）出品的一款SMD型自恢复过流保护器件（PTC/自恢复保险），封装尺寸为1812，适合表面贴装工艺。器件设计用于对低压直流电路提供过流保护，发生过流时自动限流并在故障解除后恢复原始状态，适用于对可重复短路或突发浪涌有保护需求的电子系统。
二、主要性能参数
- 品牌：BHFUSE（佰宏）
- 封装：1812
- 长度：4.73 mm；宽度：3.41 mm；高度：1.3 mm
- 初始态阻值 (Rmin)：20 mΩ
- 跳断后阻值 (R1max)：100 mΩ
- 保持电流 (Ihold)：2 A
- 跳闸电流 (Itrip)：4 A（典型动作电流）
- 最大电流 (Imax)：100 A（可承受短时脉冲电流）
- 耐压 (Vmax)：8 V
- 消耗功率 (Pd)：1 W（在规定条件下的功耗极限）
- 动作时间：约 2 s（在规定过流条件下的典型动作时间）
- 工作温度范围：-40 ℃ ~ +85 ℃
三、典型特性说明
- 低初始阻值（20 mΩ）确保正常工作时的压降小、发热低，适合对电压损耗要求严格的电源分配线路。
- 在过流或短路条件下，器件温升使阻值上升至最大约100 mΩ，从而限制电流，保护下游电路。
- 保持电流2 A 表示在此电流及以下器件长期保持闭合状态；当电流达到约4 A 时器件将在典型2 s 时间内动作限流。
- 最大电流100 A 表示器件能承受较短时间的冲击电流，但不应作为长期工作参数使用，应结合系统保护策略设计。
四、应用场景
- USB/数据端口、充电接口过流保护
- 电池管理与便携式设备的短路保护
- 通信设备、机顶盒、路由器的电源保护
- 工业控制低压DC电源分路保护
（适用于需自动复位功能、重复保护与低压环境的场合）
五、安装与使用注意事项
- 电压不得超过标称最大耐压8 V；超过该值会影响动作特性并可能损坏器件。
- 设计电路时应保证长期工作电流低于 Ihold（建议留有安全裕量），避免器件频繁触发导致寿命降低或热累积。
- Imax 为短时冲击承受能力，不作为持续工作电流；若存在大电流冲击，应验证热冲击和焊点可靠性。
- PCB 布局应为器件提供良好散热路径，焊盘尺寸和金属过孔应符合厂商建议，避免机械应力。
- 焊接与回流时请遵循厂商的焊接工艺规范（避免超温或超时造成器件性能损伤）。
- 环境温度对保持电流与跳闸电流有显著影响，高温会降低器件允许电流，应在系统热环境中进行确认。
六、可靠性与资料获取
该器件适合反复动作的自恢复保护场景，但设计时应结合实际负载特性进行寿命评估。欲获取详细I–t曲线、温漂特性、回流焊工艺参数及认证资料，请向佰宏官方或授权分销商索取完整数据手册与样片，以便在目标应用中进行验证测试。
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