WMSIC Electronic Components

BHFUSE BSMD2920L-1000-24V BSMD2920L

ModelBSMD2920L-1000-24V
Package2920
BrandBHFUSE
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
BHFUSE BSMD2920L-1000-24V
Type
BHFUSE
Minimum package
1500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BHFUSE
Electronic Component
BSMD2920L-1000-24V
Electronic Component
1
Electronic Component
5.7mm
Package
2920
Electronic Component
Resettable Fuse
Electronic Component
0.429g
Electronic Component
8.1mm
Electronic Component
1.5mm
Electronic Component
1
Electronic Component
5s
Electronic Component
BM0257686111
Operating Temperature
40℃~+85℃
Voltage Rating(Vmax)
24V
Power(Pd)
2W

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

BSMD2920L-1000-24V 产品概述

一、产品简介

BSMD2920L-1000-24V 是佰宏(BHFUSE)推出的一款自恢复式聚合物 PTC 过流保护元件(自恢复保险丝),封装型号为 2920。该器件专为 24V 级别系统设计,具有快速响应的过流保护能力与自动复位特性,适用于需要重复过流保护且不希望更换元件的场景。

二、主要电气与机械参数

  • 额定耐压(Vmax):24V
  • 最大允许电流(Imax):30A
  • 保持电流(Ihold):10A(器件在该电流下长期不动作)
  • 跳闸电流(Itrip):20A(在规定条件下约 5s 动作)
  • 动作时间:5s(达到 Itrip 时的典型动作时间)
  • 功耗(Pd):2W
  • 初始态阻值(Rmin):0.5mΩ
  • 跳断后阻值(R1max):8mΩ
  • 工作温度范围:-40℃ ~ +85℃
  • 尺寸:长度 8.1mm × 宽度 5.7mm × 高度 1.5mm
  • 品牌:BHFUSE(佰宏)
  • 封装:2920(SMD)

三、特点与优势

  • 自恢复设计:发生过流时自动增阻限流,故障消除后恢复低阻态,降低维护成本。
  • 高电流承载:Imax 可达 30A,适用于大电流短时冲击场合。
  • 低初始阻值:Rmin 仅 0.5mΩ,正常工作时电压降小、发热低。
  • 紧凑封装:2920 SMD 形式,便于自动贴装和批量生产。
  • 宽温度范围:-40℃~+85℃,适合工业级环境使用。

四、典型应用场景

  • 24V 工业控制与伺服系统输入保护
  • 车载 24V 辅助电源(非高安全关键电路)
  • 通信、电源模块与逆变器的输出/输入保护
  • UPS、电池管理与太阳能逆变器短路、过载保护
  • 电机驱动、踏板控制等需要重复短路保护的场合

五、选型与使用建议

  • 环境与热管理:在高环境温度或密闭空间中应对保持电流进行适当降额,确保器件不会因环境升温导致误动作。
  • 布局建议:将器件尽量靠近电源输入侧放置,以最小化受保护电路的引线电感与电阻。
  • 冷却与散热:虽然自身为自恢复元件,但在连续高电流条件下应保证良好散热或采用并联方案分散热负荷。
  • 测试验证:在目标系统实际负载条件下验证动作时间与恢复特性,确认 Pd 与温升满足系统要求。
  • 不适用于替代慢断路的场合:对于需要精确断路或安全级别高的保护,应配合熔断器或断路器使用。

六、封装与可靠性

2920 SMD 封装适配自动贴装与回流焊工艺,器件在设计上兼顾机械强度与耐振动能力。长期可靠性取决于工作温度、循环过流次数及散热条件,建议在选型时参考实际环境并做寿命测试。

如需下载规格书或获取样品与批量报价,可联系佰宏(BHFUSE)官方渠道提供完整器件性能曲线与应用参考。

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