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RUILON(瑞隆源) SMD1206P012TF
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RUILON SMD1206P012TF
- Type
- RUILON
- Minimum package
- 3500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- RUILON
- Electronic Component
- SMD1206P012TF
- Electronic Component
- 1
- Electronic Component
- 1.9mm
- Package
- 1206
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.033g
- Electronic Component
- 3.6mm
- Electronic Component
- 1.2mm
- Electronic Component
- 1
- Electronic Component
- 1s
- Electronic Component
- BM0227754550
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 60V
- Power(Pd)
- 400mW
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMD1206P012TF 产品概述
一、产品简介
SMD1206P012TF 是 RUILON（瑞隆源）推出的一款 1206 封装自恢复熔断器（PTC resettable fuse），专为电子线路的过流保护与可复位保护设计。器件尺寸符合 1206 标准（长 3.6mm × 宽 1.9mm × 高 1.2mm），额定工作温度范围为 -40℃ 至 +85℃，适合多种消费、通信与工业电子产品。
二、主要电气参数
- 额定耐压：60V（Vmax）
- 保持电流：Ihold = 120mA（器件在常温下维持低阻态的最大持续电流）
- 跳闸电流：Itrip = 290mA（典型触发过流并进入高阻态的电流）
- 跳断后阻值：R1max = 10Ω（触发后限制电流的最大阻抗）
- 初始态阻值：Rmin = 1.35Ω（未触发时的典型低阻值）
- 最大允许电流：Imax = 10A（短时或非连续峰值能力，具体应用需参考浪涌能量）
- 功耗：Pd = 400mW（器件在常温下的最大耗散功率）
- 动作时间：约 1s（从过流到显著增阻的响应时间）
三、特性与行为说明
该自恢复熔断器在电流超过 Itrip 并持续一定时间后通过内部材料加热使阻值大幅上升，从而限制电流，保护下游电路；当电流降至低于 Ihold 并冷却恢复后，阻值恢复至初始状态，实现自动复位。Pd=400mW 表明在设计电路和布局时需关注器件的散热与环境温度影响。
四、典型应用场景
- USB 与外设电源保护
- 通信与网络设备端口过流保护
- 消费类产品（路由器、机顶盒、充电器）
- 工业控制与仪表的局部电源保护
- LED 驱动及小功率电机控制的短路防护
五、选型与使用建议
- 保证 Ihold 大于正常工作峰值、并小于可能损害电路的故障电流；Itrip 应远低于被保护器件可承受的破坏阈值。
- 在高环境温度下器件的 Ihold/ Itrip 会降低，需按温度系数留有裕量。
- Pd 限制了长期通过的功率，若持续工作接近 Pd，应改用更高功耗等级元件或改善散热。
- 布局时避免将热源紧邻熔断器，建议在 PCB 上预留适当散热区域和符合 1206 的焊盘尺寸，采用符合元件厂家推荐的回流焊工艺曲线。
六、可靠性与注意事项
SMD1206P012TF 适合反复触发复位场合，但不宜作为一次性快速断路器替代。长期承受高过流或反复高频触发会加速老化。焊接、清洗及机械应力应遵循厂商工艺规范以确保可靠性。选型时若需通过大能量冲击或更高工作电压，应与厂家确认器件极限条件与测试数据。
如需样品、完整数据手册或PCB封装推荐图，请提供需求，我可继续提供对应资料与布线建议。
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