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RUILON SMD1812P200TF/24 SMD1812P200TF
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- RUILON SMD1812P200TF / 24
- Type
- RUILON
- Unit
- Electronic Component
- Minimum package
- 1500
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- RUILON
- Electronic Component
- SMD1812P200TF/24
- Electronic Component
- 1
- Electronic Component
- 3.41mm
- Package
- 1812
- Electronic Component
- Resettable Fuse
- Electronic Component
- 0.107g
- Electronic Component
- 4.73mm
- Electronic Component
- 1.5mm
- Electronic Component
- 1
- Electronic Component
- 2s
- Electronic Component
- BM0227754544
- 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.
SMD1812P200TF/24 产品概述
一、产品简介
SMD1812P200TF/24 是瑞隆源（RUILON）出品的一款1812封装自恢复保险（聚合物PTC resettable fuse），额定系统电压24V、保持电流2A。该器件在过流时快速升温增阻，限制电流并保护后端电路；故障解除后随温度下降自动恢复到低阻态，适合对可复位保护有要求的电源和接口电路。
二、主要技术参数
- 封装：1812（SMD）；长度 4.73 mm，宽度 3.41 mm，高度 1.5 mm
- 额定电压（Vmax）：24 V
- 保持电流（Ihold）：2 A
- 跳闸电流（Itrip）：4 A（约定时间内触发）
- 最大允许电流（Imax，瞬态）：35 A（短时浪涌）
- 初始态阻值（Rmin）：20 mΩ；跳断后阻值（R1max）：100 mΩ
- 最大消耗功率（Pd）：800 mW
- 动作时间：2 s（典型/参考值，按测试条件）
- 工作温度范围：-40 ℃ ~ +85 ℃
三、结构与封装特性
1812 SMD 封装尺寸小、易于自动贴装与回流焊接，适合集成在紧凑电路板上。器件厚度1.5 mm 在布局时需注意与周围元件的垂直间距。初始低阻态时对电压降影响小，跳闸后阻值升高以限制故障电流。
四、典型应用场景
- 24V 直流供电系统的输出或分支保护
- 工业控制、通信设备、POE 辅助电源与复位保护
- 充电类/电池管理系统的短路与过流保护（需按规范验证）
- 接口保护（例如外设供电、模块电源输入）
五、选型与设计注意事项
- 保持电流（Ihold）应高于正常工作电流，建议留出裕量以避免热迁移或环境升温导致误动作。
- 跳闸电流（Itrip）与动作时间受环境温度、PCB散热和周边器件影响；在高温环境下器件更容易触发。
- 瞬态浪涌（Imax）能力有限，若系统存在频繁大电流冲击，需评估并配合限流电阻或其它浪涌抑制元件。
- 额定电压24V为器件安全使用上限，应避免长期高压应力。
- 布局时为提高热恢复能力，可考虑在器件下方或附近留足铜厚度用于散热控制；回流焊档位应参考厂方工艺建议以防性能退化。
- 在关键安全/汽车场景，应结合规范做额外可靠性和温升测试，确认响应时间与复位性能满足要求。
六、可靠性与使用建议
该型号适合需要可自动恢复过流保护的24V小功率或分支电路。为保证长期稳定性，建议在样机阶段完成功率循环、环境温度循环和实际负载下的触发/恢复测试；并对板级热分布、焊接工艺进行验证，确保器件在实际工况下既不过于敏感也能可靠动作。
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