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BHFUSE BSMD2920-200-48V BSMD2920
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD2920-200-48V
- Type
- BHFUSE
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD2920-200-48V
- Electronic Component
- 1
- Electronic Component
- 5.44mm
- Package
- 2920
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.189g
- Electronic Component
- 7.98mm
- Electronic Component
- 1.4mm
- Electronic Component
- 1
- Electronic Component
- 4.5s
- Electronic Component
- BM0229474039
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 48V
- Power(Pd)
- 2W
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD2920-200-48V 产品概述
一、产品简介
BSMD2920-200-48V 是佰宏（BHFUSE）推出的一款表面贴装自恢复保险丝（PTC resettable fuse），封装规格为 2920（2.9×2.0mm），专为中低压直流保护设计。器件在正常工作下提供很低的初始电阻（Rmin = 20 mΩ），在过流后可快速跳闸并将电阻上升到最大 120 mΩ，从而限制电流，过热后可自动恢复。
二、关键电气与机械参数
- 额定耐压：Vmax = 48V
- 保持电流：Ihold = 2A（正常连续工作电流）
- 跳闸电流：Itrip = 4A（典型触发点）
- 最大通过电流：Imax = 40A（短时承受能力）
- 初始态阻值：Rmin = 20 mΩ
- 跳断后阻值：R1max = 120 mΩ
- 最大耗散功率：Pd = 2W
- 工作温度：-40℃ ~ +85℃
- 动作时间：4.5s（于指定过流条件下测得）
- 外形尺寸：长度 7.98mm × 宽度 5.44mm × 高度 1.4mm
- 封装：2920，品牌：BHFUSE（佰宏）
三、主要特性与优势
- 低初始电阻，减少正常工作能量损耗与压降；
- 快速自恢复保护，发生过流后不需更换，减少维护；
- 宽温工作范围，适应多种工业与车载环境；
- 封装小巧，适合空间受限的贴片设计；
- 高最大承载电流（短时），能应对启动涌流或瞬态冲击。
四、典型应用场景
- 通信设备、路由器和交换机的电源保护；
- USB、PD 或车载电子模块的短路/过流防护；
- 电池管理与充电系统的初级保护；
- 工业控制模块、消费电子的小电流分支保护。
五、设计与选型建议
- 选择时重点考虑 Ihold 与 Itrip：工作电流应低于 Ihold，突发电流可不超过 Itrip 的容错；
- 样件布局应保证散热与温度传感准确，避免靠近高热源导致误触发；
- 对于长期高功率工作场合，注意 Pd 与 PCB 散热设计，必要时使用铜厚或散热铜箔；
- 在高脉冲或频繁过流环境下，验证器件寿命与恢复特性。
如需样品测试、详细温升曲线或再流工艺建议，可提供进一步支持与数据手册。
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