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BHFUSE BSMD0402L-050 BSMD0402L
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD0402L-050
- Type
- BHFUSE
- Minimum package
- 10000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD0402L-050
- Electronic Component
- 1
- Electronic Component
- 0.65mm
- Package
- 0402
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.016g
- Electronic Component
- 1.15mm
- Electronic Component
- 0.6mm
- Electronic Component
- 1
- Electronic Component
- 100ms
- Electronic Component
- BM0228072368
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 6V
- Power(Pd)
- 500mW
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD0402L-050 产品概述
一、产品简介
BSMD0402L-050 是 BHFUSE（佰宏）推出的一款微型自恢复保险（PTC resettable fuse），采用 0402 封装，专为空间受限的移动设备和精密电子系统提供过流保护而设计。器件在异常过流或短路情况下快速动作并限制电流，故障消除后可自动恢复，适合对体积和可靠性有较高要求的电路保护应用。
二、主要特性
- 初始态低阻抗：典型初始阻值 Rmin = 40 mΩ，保证正常供电时压降和热耗小。
- 跳闸后高阻态：跳闸后阻值 R1max ≤ 400 mΩ，有效限制通过电流。
- 明确动作特性：动作时间约 100 ms，跳闸电流 Itrip = 1 A，保持电流 Ihold = 500 mA。
- 优异的电气承受能力：最高耐压 Vmax = 6 V，最大瞬态允许电流 Imax = 40 A。
- 宽工作温度范围：-40 ℃ 至 +85 ℃，适用多种环境条件。
- 热稳定性好：最大消耗功率 Pd = 500 mW，体积小而热容适中。
三、关键电气参数
- 初始态阻值（Rmin）：40 mΩ
- 跳断后阻值（R1max）：400 mΩ（最大）
- 保持电流（Ihold）：0.5 A
- 跳闸电流（Itrip）：1 A
- 最大电流（Imax）：40 A（瞬态冲击）
- 最大耐压（Vmax）：6 V
- 动作时间：100 ms
- 最大耗散功率（Pd）：500 mW
四、典型应用场景
- USB、Type-C 接口和数据/电源插口的过流防护
- 移动电源、便携式音频、蓝牙设备等消费类电子电源管理
- IoT 终端、传感器节点与低功耗模块的输入保护
- 小型电池管理、充电线路保护与模块化电源板设计
五、封装与机械参数
- 封装：0402（微型 SMD）
- 长度：1.15 mm；宽度：0.65 mm；高度：0.6 mm
该微小尺寸便于高密度 PCB 布局，但对丝印、回流和检验提出更高要求。
六、使用与焊接建议
- 焊接工艺：建议采用标准无铅回流工艺，控温曲线需符合元件耐热性，避免超时高温造成参数漂移。
- 版图建议：焊盘应适当加宽并留有热散逸空间，避免周围器件过密导致热累积。
- 散热与布局：在高温或连续高负载场合，应留意周围元件散热，必要时进行热仿真或增加间距。
- 选型注意：根据工作电流与预期短路能量选择 Ihold / Itrip 匹配的型号，留有余量以提高可靠性。
- 环境与可靠性：长期在高温或频繁触发的工况下，器件老化会影响跳闸特性，建议在设计时考虑冗余或定期验证。
如需进一步的电流-时间曲线、热阻数据或推荐 PCB 尺寸图，可提供以便完成详细设计与可靠性评估。
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