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BHFUSE BSMD1812-260-16V BSMD1812
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD1812-260-16V
- Type
- BHFUSE
- Minimum package
- 1500 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD1812-260-16V
- Electronic Component
- 1
- Package
- 1812
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.128g
- Electronic Component
- 1
- Electronic Component
- 2.5s
- Electronic Component
- BM0228072392
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 16V
- Power(Pd)
- 1.2W
- 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.
BSMD1812-260-16V产品概述
一、产品简介
BSMD1812-260-16V为BHFUSE（佰宏）出品的表面贴装自恢复保险器（PTC/聚合物自恢复保险）。器件封装为1812，适用于空间受限但需高可靠过流保护的电子设备。器件在正常工作时呈低阻态，过流时增阻限流，故障消除后可自动恢复，便于维护与长期使用。
二、主要技术参数
- 额定耐压（Vmax）：16V
- 最大承受电流（Imax）：40A（瞬时能力）
- 保持电流（Ihold）：2.6A（设备在不跳闸情况下长期允许的最大电流）
- 跳闸电流（Itrip）：5.2A（在规定时间内开始显著增阻的电流）
- 跳闸时间：2.5s（在Itrip条件下的动作时间参考）
- 功耗（Pd）：1.2W（在特定条件下的功耗限定）
- 初始态电阻（Rmin）：10mΩ（冷态低阻）
- 跳断后电阻（R1max）：70mΩ（动作后限流电阻上限）
- 工作温度范围：-40℃ ~ +85℃
三、核心优势
- 快速响应：在过流条件下2.5秒内动作，有效保护下游电路。
- 高承载能力：40A瞬时承载保障浪涌与短时过载情况下的可靠性。
- 可恢复性：跳闸后自动恢复，减少更换与停机成本。
- 低初始阻抗：10mΩ起始阻值，降低正常工作时的功率损耗与压降。
- 宽温工作范围：-40℃至+85℃，适配常见工业与消费电子环境。
四、典型应用
- 消费类电子：平板、机顶盒、路由器等5V/12V供电保护。
- 通信与网络设备：交换机、基站电源保护模块。
- 商用与工业电源：电源管理板、配电模块浪涌保护。
- 汽车电子（非严苛汽车等级场景）：车载娱乐、辅助设备的短路保护（须评估热与振动要求）。
五、选型与注意事项
- 电压余量：16V耐压应大于系统最大工作电压，推荐在额定电压下留有安全裕度。
- 电流匹配：长期工作电流应小于Ihold（2.6A），典型过流场景峰值应低于Imax（40A），并注意Itrip（5.2A）对应动作时间。
- 功耗与散热：Pd 1.2W表示在特定温度下的最大耗散，PCB散热和环境温度会影响器件动作特性，应在设计时验证热耦合效应。
- 电阻变化：动作后阻值可达70mΩ，需评估动作时电压降与下游负载影响。
六、安装与可靠性
- 封装1812适配常见SMT工艺；焊盘布局参考厂商推荐的足迹以确保热与机械性能。
- 避免贴片过程中高温或过度机械应力，焊接时遵循回流曲线。
- 建议做ESD与浪涌试验验证，并在最终产品环境温度下进行过流/恢复循环测试以确认可靠性。
七、包装与订购建议
- 由佰宏生产，常见为卷带包装（供贴片机使用）；批量采购时建议与供应商确认最小起订量与交期。
- 在样机阶段建议订购少量样品进行系统级验证，再做批量投产确认。
总结：BSMD1812-260-16V以其低阻、高承载与自动恢复特性，适合对尺寸和可靠性有要求的过流保护场景。选型时重点关注工作电流、系统电压裕度与热管理，以确保长期稳定运行。
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