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BHFUSE BSMD0603-020-9V BSMD0603
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BHFUSE BSMD0603-020-9V
- Type
- BHFUSE
- Minimum package
- 5000 未知
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BHFUSE
- Electronic Component
- BSMD0603-020-9V
- Electronic Component
- 1
- Electronic Component
- 1.05mm
- Package
- 0603
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.031g
- Electronic Component
- 1.85mm
- Electronic Component
- 1mm
- Electronic Component
- 1
- Electronic Component
- 600ms
- Electronic Component
- BM0228072339
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 9V
- Power(Pd)
- 500mW
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSMD0603-020-9V 产品概述
一、产品简介
BSMD0603-020-9V 为佰宏（BHFUSE）出品的贴片自恢复保险元件（聚合物PTC），封装为0603（尺寸：1.85 × 1.05 × 1.00 mm）。该器件针对低压、受限空间电源保护设计，典型用于便携式设备、电池保护、USB/外围接口及物联网终端等场景，在出现过流或短路时能迅速升阻限制电流并在故障解除后自动恢复，免去更换一次性保险丝的麻烦。
二、主要电气与机械参数
- 最大耐压（Vmax）：9 V
- 最大短路耐受电流（Imax）：40 A
- 保持电流（Ihold）：0.20 A（200 mA）
- 跳闸电流（Itrip）：0.50 A（500 mA）
- 功耗（Pd）：0.5 W（500 mW）
- 初始电阻（Rmin）：≈0.55 Ω
- 跳断后电阻（R1max）：≤3.5 Ω
- 动作时间：约 600 ms（典型）
- 工作温度：-40 ℃ ～ +85 ℃
- 尺寸：1.85 mm × 1.05 mm × 1.00 mm
三、产品特性与优势
- 小体积、轻量化，适合高密度PCB贴装与自动化生产。
- 自恢复特性：过流后自动升阻限制电流，故障消除后恢复导通，降低维护成本。
- 宽工作温度范围，适配工业级与消费级应用环境。
- 初始阻抗较低，减少正常工作时的压降与功耗。
- 较高的短路耐受能量（Imax），对突发短路具有一定容错能力。
四、典型应用场景
- 移动电源、锂电池保护（单节或低电压整组）
- USB/串口、外设电源防护（摄像头、存储、扩展板等）
- 可穿戴设备与智能终端的电源轨保护
- 工业传感器与小功率控制器的输入保护
五、选型与使用注意事项
- 确认系统工作电压≤9 V 且正常工作电流远低于 Ihold，以避免误触发。
- 动作时间约600 ms，不能替代需要快速熔断的安全保护场景（如高速短路保护）。
- 考虑环境温度对保持电流的影响：高温环境会降低器件允许的持续电流，应适当降额使用。
- 布局建议将器件靠近电源入口或被保护元件，避免与强热源邻近，以利散热和动作可靠性。
- SMT 贴装按常规0603工艺，注意回流曲线与焊膏量控制，避免过热损伤本体材料。
六、对比与替代建议
BSMD0603-020-9V 适合频繁恢复保护场景与空间受限的电路。若需更高速度或更高能量消耗能力，建议考虑快速熔断保险丝（PTC 之外）或更大封装的自恢复保险件；若工作电压超过9 V，应选择相应耐压等级更高的型号。
七、封装与标识
产品标识通常包含型名 BSMD0603-020-9V，"020" 对应 200 mA 保持电流规格，封装与0603 标准兼容，便于贴片机贴装与回流焊接工艺集成。
如需评估在具体应用中的热升与动作曲线（I–t）、长期可靠性测试数据或推荐PCB焊盘图，请提供目标工作电流、环境温度与使用场景，以便给出更精确的工程建议。
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