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RUILON SMD1812P260TF/24 SMD1812P260TF
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RUILON SMD1812P260TF / 24
- Type
- RUILON
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- RUILON
- Electronic Component
- SMD1812P260TF/24
- Electronic Component
- 1
- Electronic Component
- 3.41mm
- Package
- 1812
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.114g
- Electronic Component
- 4.73mm
- Electronic Component
- 1.5mm
- Electronic Component
- 1
- Electronic Component
- 2.5s
- Electronic Component
- BM0264391778
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 24V
- Power(Pd)
- 800mW
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMD1812P260TF/24 产品概述
一、产品简介
SMD1812P260TF/24 是 RUILON（瑞隆源）推出的一款微型表面贴装可复位过流保护器件（PPTC），工作电压上限 24V。该系列面向空间受限且对电流保护要求较低的超便携式设备，单芯片封装 1812，适合自动贴装和高密度 PCB 设计。系列保持电流覆盖 0.1A 至 4.0A 范围，本型号的标准保持电流为 2.6A，跳闸电流约 5A。
二、关键规格
- 最大耐压 (Vmax)：24V
- 最大承受电流 (Imax，瞬时/短时)：35A
- 保持电流 (Ihold)：2.6A（本型号）
- 跳闸电流 (Itrip)：5A（典型）
- 功耗 (Pd)：800mW
- 初始阻值 (Rmin)：10mΩ
- 跳断后阻值 (R1max)：50mΩ
- 动作时间：约 2.5s（至跳闸状态）
- 工作温度：-40℃ ~ +85℃
- 外形尺寸：4.73 × 3.41 × 1.50 mm（1812 封装）
三、工作原理与主要特性
该器件采用聚合物正温度系数（PPTC）材料制成：正常工作时表现为低电阻（典型 10mΩ），当电流超过一定阈值并在一定时间内导致器件温升到触发点时，材料电阻迅速上升（跳断后可达 ≤50mΩ），限制电流并保护线路。去除过流后，器件随温度下降恢复低阻态，实现自动复位。特点包括体积小、重量轻、无需更换、对浪涌具有一定承受能力。
四、封装与安装
1812 表面贴装封装，尺寸 4.73×3.41×1.50 mm，兼容常见 SMT 贴片工艺。为确保可靠焊接与热管理，请遵循厂商推荐的回流焊曲线并避免超过最大焊接温度。布局建议将器件靠近被保护电源入口或负载侧，走短而粗的引线以降低寄生阻抗和温升。
五、典型应用
- 超便携式电子产品（手持设备、小型相机）
- 便携式电池供电设备与电源管理模块
- USB/外围接口保护（24V 以下系统）
- 工业与物联网终端的低电流过流防护
六、选型与使用建议
- 选型时保持电流 Ihold 应高于最大正常工作电流，常见经验为至少 1.25× 实际工作电流以避免误触发；注意环境温度升高会降低器件允许的保持电流，需进行温度降额计算。
- 对于含有频繁浪涌或长期高温工况的应用，应考虑更高规格或外加限流保护来避免频繁跳闸与寿命下降。
- 不建议将 PPTC 当作频繁开关器件使用，亦非断路器的直接替代；其触发后需等待冷却复位。
七、可靠性与注意事项
该器件结构简单、可靠性高，可多次自动复位，但在多次大电流触发下性能会随时间衰减。避免在超过额定电压或长期超过 Pd 的条件下工作；遇极端或安全关键应用，请配合测试并考虑冗余保护。订购时请确认具体型号 SMD1812P260TF/24 以匹配所需保持电流与工作电压，并参考 RUILON 的技术数据表获取完整的焊接、环境与寿命指标。
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