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RUILON RL250-120 RL250
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RUILON RL250-120
- Type
- RUILON
- Minimum package
- 1000 袋
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- RUILON
- Electronic Component
- RL250-120
- Electronic Component
- 1
- Package
- Through-hole, P=5.1mm
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.261g
- Electronic Component
- 1
- Electronic Component
- 2s
- Electronic Component
- BM0238785229
- Voltage Rating(Vmax)
- 250V
- Power(Pd)
- 1W
- Current(Imax)
- 3A
- Electronic Component
- Electronic Component
- Electronic Component
- 1000
- Latching Current(Ihold)
- 120mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
RL250-120 产品概述
一、核心参数与结构
RL250-120 为 RUILON（瑞隆源）出品的插件式自恢复保险器件（PPTC），适用于交流或直流系统的过流保护。主要电气参数如下：
- 额定耐压：Vmax = 250V
- 最大允许电流：Imax = 3A
- 保持电流：Ihold = 120mA（器件在常温下允许长期通过而不动作的电流）
- 跳闸电流：Itrip = 240mA（在规定条件下器件开始迅速增阻以限制电流）
- 功耗：Pd = 1W
- 初始态阻值：Rmin = 5Ω
- 跳断后阻值上限：R1max = 18Ω
- 动作时间：约 2s（在过流到达 Itrip 条件下的典型响应）
封装形式为插件式（插件引脚间距 P = 5.1mm），便于通过孔安装和维修更换。
二、工作原理与特性
RL250-120 属于聚合物正温度系数（PPTC）自恢复保险器：在正常工作电流下保持低阻状态；当电流超过 Itrip 时，内部加热使导电聚合物进入高阻态，限制电流并保护负载与电源。去除过流后器件随环境散热逐步恢复到低阻态，实现自动复位，免去更换过程。
三、典型应用场景
- 家用小功率电子设备（控制板、传感模块电源保护）
- 通信设备与消费类电子的输入防护
- 小型电源适配器、充电设备、接口电路的过流保护
- 需要插件维护或快速更换的工业控制板
四、选型与使用建议
- 确认工作电压不超过 250V 且工作电流长期不高于 120mA，以避免误动作或寿命下降。
- 若系统出现短时冲击电流，需评估冲击幅值与持续时间，必要时选用更高 Itrip 的型号或并联限流手段。
- 安装时保持良好散热条件，避免长期在高温环境下工作导致动作特性漂移。
- 插件式布局便于维修，但焊接或插拔时注意不损伤本体和引脚。
五、优势与限制
优势：自动复位、维护方便、安装简单、适合反复过载保护场景；封装适合板上插件安装。
限制：动作时间与阻值受环境温度影响，功率与电流限制（Imax 3A）不适合高功率场合；如需精确过流保护或瞬态抑制，应与熔断器、限流电阻或TVS 等器件组合使用。
总结：RL250-120 是一款面向低功耗电子设备的可靠插件式自恢复过流保护元件，适用于需要重复保护且便于维护的应用场合。选型时应综合考虑工作电流、环境温度及冲击电流特性。
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