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BHFUSE BSMD1812-030-30V BSMD1812
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD1812-030-30V
- Type
- BHFUSE
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD1812-030-30V
- Electronic Component
- 1
- Package
- 1812
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.114g
- Electronic Component
- 1
- Electronic Component
- 100ms
- Electronic Component
- BM0229474033
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 30V
- Power(Pd)
- 800mW
- Current(Imax)
- 40A
- Electronic Component
- Electronic Component
- Electronic Component
- 1500
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD1812-030-30V（BHFUSE 佰宏）产品概述
一、产品概况
BSMD1812-030-30V 是佰宏（BHFUSE）推出的一款 1812 封装表面贴装自恢复保险元件（PTC resettable fuse），用于电路过流保护和短路限流。该器件在正常工作时阻值低、功耗小；当电流超过设定阈值时迅速升温增阻，实现限流保护；故障排除后可自动冷却复位，便于重复使用，适合消费电子、通讯、计算设备与工业控制等场景。
二、主要技术参数
- 品牌：BHFUSE（佰宏）
- 封装：1812（SMD）
- 初始态阻值（Rmin）：0.25 Ω
- 跳闸电流（Itrip）：600 mA
- 保持电流（Ihold）：300 mA
- 跳断后阻值（R1max）：3 Ω（最大）
- 最大电流（Imax）：40 A
- 耐压（Vmax）：30 V
- 消耗功率（Pd）：800 mW
- 动作时间：100 ms（在标称条件下）
- 工作温度范围：-40 ℃ ~ +85 ℃
三、产品特点与优势
- 响应迅速：100 ms 量级动作时间，可在短时间内限制故障电流，保护下游元件。
- 低初始阻值：0.25 Ω 起，典型情况下对供电路径影响小，适合对压降敏感的线路。
- 可复位：故障解除后自动恢复，降低维护成本并简化设计。
- 宽电流范围：Ihold/ Itrip 设定适用于低功耗信号与接口电源保护，Imax 达 40 A，能承受短时冲击电流。
- 紧凑封装：1812 SMD 适合自动贴装与密集布局。
四、典型应用
- USB、HDMI 等接口过流保护
- 通信设备与路由器的供电保护
- 电源模块输入侧的浪涌/短路防护
- 电池管理与便携设备充电线路
- 工业控制板与测量仪器的局部保护
五、选型与使用建议
- 正常工作电流应低于 Ihold，且在最大可能瞬态下仍低于 Itrip；若系统存在较大浪涌或启动电流，应考虑并联限流电阻或选择更高规格元件。
- 耐压 30 V，适用于低压直流系统；高压系统需选用更高耐压器件或并联设计。
- 关注热环境：长期高温会影响动作特性与复位速度，请在设计时留有热裕量并避免热源邻近。
- 对于需要快速复位或频繁动作的场合，评估恢复时间与寿命，必要时采用外部熔断或断路器作为补充保护。
六、封装与焊接注意事项
- 本品为 1812 SMD，支持常规回流焊工艺。建议遵循元件制造商与 PCB 组装商的回流曲线与峰值温度限制，避免过长高温暴露以免影响可靠性。
- 储存与拆卸时避免潮气和机械应力，必要时按潮湿敏感元件（MSL）规范处理。
七、可靠性与品质建议
- 建议在原厂或正规渠道采购，关注批次一致性与质量报告。
- 对关键应用进行温度循环、过流寿命测试与实际系统验证，确保在目标工况下动作与复位特性满足需求。
如需针对具体电路（例如 USB 5 V 输入、步进电机驱动器或电池充电路径）进行选型比对和仿真建议，我可以根据系统工作电流、浪涌特性与热环境提供更具体的配置与替代型号建议。
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