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BHFUSE BH30-400 BH30
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BH30-400
- Type
- BHFUSE
- Minimum package
- 500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BH30-400
- Electronic Component
- 1
- Package
- Through-hole, P=5.1mm
- Electronic Component
- Resettable Fuse
- Electronic Component
- 1g
- Electronic Component
- 1
- Electronic Component
- 20s
- Electronic Component
- BM0228072378
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 30V
- Power(Pd)
- 2.5W
- Current(Imax)
- 40A
- Electronic Component
- Electronic Component
- Electronic Component
- 500
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BH30-400 产品概述
一、产品简介
BH30-400 为 BHFUSE（佰宏）系列的一款插件式自恢复保险元件（PTC/聚合物自恢复保险丝），适用于对过流保护和短路保护有高可靠性要求的电子设备。封装为插件式，针距 P=5.1mm，便于手工或波峰/回流焊装配与更换。
二、主要技术参数
- 最大耐压（Vmax）：30 V
- 最大电流（Imax）：40 A（瞬时或短时通过能力）
- 保持电流（Ihold）：4 A（正常工作不触发）
- 跳闸电流（Itrip）：8 A（在指定时间内触发）
- 动作时间：约 20 s（在标称过流条件下触发）
- 功耗（Pd）：2.5 W（额定或测试条件下）
- 初始态阻值（Rmin）：10 mΩ
- 跳断后阻值（R1max）：45 mΩ
- 工作温度范围：-40 ℃ ~ +85 ℃
三、主要特性与优势
- 响应稳定：在超过 Itrip 的情况下能可靠限制电流，保护下游电路元件。
- 可自恢复：过流解除后可恢复导通，减少人工更换成本（适合非一次性保护场景）。
- 低初始阻值：Rmin≈10 mΩ，有利于高电流应用下的低压降设计。
- 插件封装：便于现场维护与替换，适用于电源板、适配器、充电设备等。
四、典型应用场景
- 开关电源与直流配电板的输入/输出过流保护；
- 电池管理系统（BMS）、充电器与移动电源；
- 电机驱动、LED 驱动及通讯设备的保护电路；
- 工业控制与汽车电子（非关键安全部位）等需频繁恢复保护的场合。
五、选型与使用建议
- 若工作电流长期接近 Ihold（4 A），应留有裕量，建议选择额定保持电流高于典型工作电流的型号。
- 对于可能出现短时大电流（启动电流或浪涌）场景，需验证 Imax（40 A）能否承受相应峰值并在允许的时间内不过热。
- 设计时关注功耗 Pd=2.5 W 与周围散热条件，避免高环境温度下误动作。
- 插件安装时保证良好焊点与可靠机械固定，防止振动造成接触不良。
六、可靠性与维护
- 工作温度范围宽（-40~+85 ℃），适应多种环境；长期使用建议做温升验证与老化试验。
- 触发后阻值上升至 ≤45 mΩ，应检查是否存在重复故障并判断是否需要替换。
- 建议在设计说明书中增加熔断器寿命和触发次数的监控策略，以便维护管理。
BH30-400 以其低阻值、可靠的自恢复特性和插件化设计，适合需要可恢复过流保护的中高电流电子系统。选型时请结合具体工作电流谱、浪涌特性和散热条件做最终确认。
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