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RUILON SMD1812P350TF
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RUILON SMD1812P350TF
- Type
- RUILON
- Minimum package
- 1500 个
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- RUILON
- Electronic Component
- SMD1812P350TF
- Electronic Component
- 1
- Electronic Component
- 3.41mm
- Package
- 1812
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.096g
- Electronic Component
- 4.73mm
- Electronic Component
- 1.5mm
- Electronic Component
- 1
- Electronic Component
- 4s
- Electronic Component
- BM0258739889
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 6V
- Power(Pd)
- 2W
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMD1812P350TF 产品概述
一、产品简介
SMD1812P350TF 为 RUILON（瑞隆源）推出的 1812 封装表面贴装自恢复保险丝（聚合物正温度系数），额定耐压 6V、保持电流 3.5A、跳闸电流 6A，适用于对短路和过流有重复自恢复要求的电子系统。器件体积小（4.73 × 3.41 × 1.50 mm），便于高密度电路设计。
二、主要参数
- 最大耐压 Vmax：6V
- 最大冲击电流 Imax：35A
- 保持电流 Ihold：3.5A
- 跳闸电流 Itrip：6A
- 功耗 Pd：2W
- 初始态阻值 Rmin：8 mΩ
- 跳断后阻值 R1max：30 mΩ
- 动作时间：4 s（典型条件下）
- 工作温度：-40 ℃ ～ +85 ℃
- 封装：1812（SMD），品牌：RUILON
三、核心特性与优势
- 低初始阻值（8 mΩ 起），保证正常工作时压降和发热低，适合电源和大电流轨。
- 高瞬态承受能力（最高 35A），能耐受启动浪涌与短时过流。
- 可自恢复设计，故障解除后自动恢复导通，减少更换频率与维护成本。
- 小型 1812 封装，兼容自动贴片与回流焊流程，便于批量生产与小型化设计。
四、典型应用场景
- 手机、平板与便携电源的过流保护
- USB、电源模块与充电线路保护
- LED 驱动与背光电源保护
- 工业控制器与通讯设备电源防护
- 非关键车载电子电源保护（需结合系统级认证）
五、选型与设计建议
- 保持电流 Ihold 为器件连续工作电流的安全边界，建议在实际应用中预留 20–30% 余量以防温升与环境影响。
- 高环境温度会降低器件承载能力，应按厂商温度曲线进行降额设计。
- 布局时保证良好散热路径，减小热阻；避开热源集中区域以避免误动作。
- 采用符合组件规范的焊盘与回流曲线，防止焊接应力损伤元件。
六、可靠性与维护要点
- 器件对反复短路有自恢复能力，但频繁跳闸表明系统存在异常，应排查根本原因而非仅依赖保险丝。
- 存储与使用环境建议避免长期潮湿与高温，长时间超出规格范围会影响特性与寿命。
- 订购时注意批次、存货有效期与供应商质量证明，关键应用考虑额外验证测试。
总结：SMD1812P350TF 为一款低阻、响应快、体积小且具高浪涌承受能力的 1812 自恢复保险丝，适合各类低压大电流保护场景。订购与技术支持请联系 RUILON 授权经销商，或参考厂家规格书以获得完整的电热特性曲线与焊接指南。
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