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RUILON RL1812A390K
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RUILON RL1812A390K
- Type
- RUILON
- Minimum package
- 1000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- RUILON
- Electronic Component
- RL1812A390K
- Electronic Component
- 1
- Package
- 1812
- Electronic Component
- Varistor Resistor
- Electronic Component
- 1.5J
- Electronic Component
- 0.178g
- Electronic Component
- 1
- Varistor Voltage
- 36V~45V
- Electronic Component
- BM0230136941
- Voltage
- 99V
- Operating Voltage(AC)
- 25V
- Operating Voltage(DC)
- 30V
- Surge Current
- 800A
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
RL1812A390K 产品概述
一、产品简介
RL1812A390K 是 RUILON(瑞隆源) 推出的一款 1812 封装的压敏电阻（MOV）保护元件，专为中低压直流/交流线路的瞬态过压防护设计。器件体积小巧，适合表面贴装工艺，能在短时浪涌事件中吸收能量，保护后端电路免受冲击损伤。
二、主要技术参数
- 压敏电压（Vr）：36V ～ 45V
- 钳位电压（Vc）：99V（峰值钳位）
- 工作电压 DC：30V
- 工作电压 AC：25V
- 峰值浪涌电流（Ipeak）：800A
- 吸收能量：1.5J
- 封装：1812（约 4.6 × 3.05 mm，表面贴装）
三、主要特性与优势
- 尺寸紧凑，便于在空间受限的 PCB 上布局，支持标准 SMD 贴装与回流焊工艺；
- 高峰值浪涌电流能力（800A）与 1.5J 的能量吸收，适合应对短时高能脉冲；
- 钳位电压 99V，能在浪涌瞬间有效限制电压幅度，降低对敏感元器件的冲击；
- 工作电压 DC 30V 的等级，针对 24V / 30V 类电源系统保护匹配良好。
四、典型应用场景
- 工业控制与自动化设备的 24V/30V 电源总线防护；
- 通信设备、交换机、电源模块输入端的瞬态抑制；
- 家电、照明驱动以及其它中低压直流负载的浪涌保护；
- 可作为整机输入端与关键节点的补充过压保护元件。
五、选型与使用建议
- 确认系统运行电压与压敏电压匹配：压敏电压应高于正常工作电压但留有适当裕量，本器件 36–45V 适配 DC30V 常态；
- 注意钳位电压与被保护器件耐压的关系：99V 的钳位值需低于被保护电路的最大承受电压；
- 对于需要多次冲击或更高能量吸收的场合，应考虑并联或选用更高能量等级的型号；
- 与浪涌发生频率较高的系统配合时需综合考虑器件温升与老化特性。
六、封装与焊接注意事项
- 1812 SMD 封装适宜常规回流焊工艺，推荐遵循厂商回流温度曲线与 PCB 焊盘设计规范；
- 避免在焊接或后续机械应力下对压敏电阻施加过大弯曲或挤压，以免引起内部裂纹影响长期可靠性；
- 存储与装配环境应防潮、防静电，避免潮湿环境长期存放。
七、可靠性与检测
- 建议在设计验证阶段进行 IEC/EN 浪涌试验（如 IEC 61000-4-5）和热循环、老化测试，评估在实际条件下的稳定性；
- 关注长期多次冲击后的参数漂移（压敏电压、钳位性能及漏电流），必要时制定更换或维护策略。
总结：RL1812A390K 以其紧凑封装与较高的瞬态能量吸收能力，适合用于 24V–30V 级别电源系统的浪涌与过压保护，选型与布局时应重点考虑压敏电压与钳位电压与被保护电路的匹配，以及实际浪涌频率与能量要求。若需详细典型电气曲线、回流焊工艺或材料合规性文件，可向供应商索取完整数据手册。
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