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BHFUSE BSMD2920-200-36V BSMD2920
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD2920-200-36V
- Type
- BHFUSE
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD2920-200-36V
- 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
- BM0229474040
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 36V
- Power(Pd)
- 2W
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD2920-200-36V 产品概述
一、产品简介
BSMD2920-200-36V 是佰宏（BHFUSE）推出的一款表面贴装自恢复保险（PTC/聚合物基翘曲式），封装尺寸为 2920（长度 7.98mm × 宽度 5.44mm × 高度 1.4mm）。器件在额定电压 36V 下工作，设计用于过流保护与短路限流，适合工业与消费类电源前端、电池管理与接口保护等场景。
二、核心电气参数
- 最大耐压（Vmax）：36V
- 最大允许电流（Imax）：40A（瞬态或短时峰值，请参照具体应用环境与热设计）
- 保持电流（Ihold）：2A（器件在此电流下长期保持低阻状态）
- 跳闸电流（Itrip）：4A（在超过该电流并满足时间条件时进入高阻态）
- 跳断后最大阻值（R1max）：120mΩ
- 初始态阻值（Rmin）：20mΩ
- 消耗功率（Pd）：2W（器件在特定条件下的功耗限制）
- 动作时间：4.5s（典型动作时间，依据具体过流倍数与温度有所差异）
- 工作温度范围：-40℃ ~ +85℃
以上数据为器件典型或规格值，具体应用中建议参考厂家详细数据表及曲线。
三、主要特点与优势
- 低初始阻值（20mΩ），在正常工作时压降小、效率高；
- 明确的保持/跳闸电流等级（2A/4A），便于设计者选型与电路保护策略制定；
- 自恢复特性：过流解除后自动回复低阻态，减少更换成本与停机时间；
- 适配表面贴装工艺，便于自动化生产与高密度布板；
- 宽温区工作能力，满足多数工业与消费电子使用环境。
四、典型应用
- 电池组与充电管理（如锂电池防护）
- 电源输入前端过流保护（适用于充电器、适配器、电源模块）
- 通讯与数据接口（例如 USB、POE 限流保护，需核实电压与功率匹配）
- 工业控制与电机驱动辅助保护（作为一级或二级保护元件）
五、选型与布局建议
- 留有至少 20%~50% 的裕量：在实际系统中建议选择保持电流大于正常最大工作电流，以防误动作；
- 热管理：器件功耗 Pd、封装热阻与 PCB 铜箔面积直接影响温升，建议在器件焊盘周围保留足够铜箔并配置热散路径；
- 焊接工艺：推荐采用符合无铅回流的标准曲线，避免长时间高温超出器件耐受范围；具体回流曲线请参照厂方资料；
- 布局：避免将敏感元件（如模拟放大器、温度传感器）紧邻器件热源，且输入端应尽量采用短且宽的走线以降低寄生电阻和发热。
六、可靠性与使用注意
- 自恢复器件并非瞬时熔断器，对频繁持续的过流或热应力应评估寿命影响；
- 长时间在接近 Pd 功耗极限下工作会加速老化，建议设计中留有安全裕度；
- 出现反复跳闸或永久高阻（R1max 显著增大）时，应检查是否存在持续短路或器件受损，并按规范更换；
- 存储与焊接前请避免受潮并遵循湿敏等级（MSL）处理，详细信息以产品数据手册为准。
如需完整性能曲线、浪涌能力、热阻参数或封装焊盘尺寸图纸，可提供原厂数据手册以便进一步的电路仿真与可靠性评估。
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