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BHFUSE BSMD2920-500-30V BSMD2920
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD2920-500-30V
- Type
- BHFUSE
- Minimum package
- 1500 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD2920-500-30V
- Electronic Component
- 1
- Electronic Component
- 5.44mm
- Package
- 2920
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.225g
- Electronic Component
- 7.98mm
- Electronic Component
- 1.6mm
- Electronic Component
- 1
- Electronic Component
- 5s
- Electronic Component
- BM0227636347
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 30V
- Power(Pd)
- 2.5W
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD2920-500-30V 产品概述
一、产品简介
BSMD2920-500-30V 是佰宏（BHFUSE）推出的一款表面贴装自恢复保险元件（PPTC/自恢复保险丝），封装型号为 2920。器件以低初始阻抗、快速增阻保护和自动复位为特点，适用于低压直流电源和接口保护场合，有效防止过流与短路引起的损害。
二、主要规格参数
- 工作温度：-40℃ ~ +85℃
- 额定耐压：Vmax = 30 V
- 保持电流：Ihold = 5 A
- 跳闸电流：Itrip = 10 A（5 s 动作时间）
- 最大持续电流：Imax = 40 A
- 初始态阻值：Rmin = 5 mΩ
- 跳断后阻值：R1max = 31 mΩ
- 最大耗散功率：Pd = 2.5 W
- 尺寸：长度 7.98 mm × 宽度 5.44 mm × 高度 1.6 mm
- 封装：2920（SMD）
三、功能与特性
- 低导通阻抗：初始阻值仅 5 mΩ，保证正常工作时压降和发热极小。
- 快速限流：在超过 10 A 的情况下，元件在规定时间内快速上升阻抗，有效限制故障电流。
- 自动复位：故障解除并冷却后阻抗恢复，便于重复使用，降低维护成本。
- 宽温度工作范围：-40℃ 至 +85℃，适应工业级环境。
四、典型应用
- 电源输入保护、分配回路保护
- USB、通信接口及外设过流保护
- 电池管理与充电系统短路保护
- 工业控制、消费电子与汽车电子（非高压车规）低压回路保护
五、布局与焊接建议
- 建议在 PCB 上留出足够的热量散布铜箔，采用宽大的焊盘以利散热。
- 推荐按厂家回流焊工艺规范进行焊接，避免超温或过长坡时导致性能退化。
- 对于接近 Itrip 工作点的应用，尽量增加空气对流或铜箔散热以避免误动作。
六、选型与注意事项
- 工作电流应小于 Ihold（5 A），并在最坏工况下远离 Itrip（10 A）以保证可靠性。
- 不可超过器件耐压 30 V 与最大电流 40 A 的极限，应考虑浪涌和瞬态电流的影响。
- 在高环境温度或散热受限的条件下，应进行热仿真或实验验证，必要时选用更高规格型号。
- 自恢复保险对频繁的断续故障会降低寿命，应结合电路设计评估是否需要永久性断路器或额外保护。
本产品由佰宏（BHFUSE）提供，适合需低阻抗、可重复复位过流保护的工业与消费类电源场景。若需详细温升曲线、I–T 特性或封装尺寸图，请联系供应商索取数据手册与应用图纸。
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