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RUILON RL0805A470K
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RUILON RL0805A470K
- Type
- RUILON
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- RUILON
- Electronic Component
- RL0805A470K
- Electronic Component
- 1
- Package
- 0805
- Electronic Component
- Varistor Resistor
- Electronic Component
- 200mJ
- Electronic Component
- 0.045g
- Electronic Component
- 1
- Varistor Voltage
- 45.6V~57V
- Electronic Component
- BM0238789091
- Voltage
- 125V
- Operating Voltage(AC)
- 30V
- Operating Voltage(DC)
- 38V
- Surge Current
- 50A
- 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.
RL0805A470K 产品概述
一、产品简介
RL0805A470K 是瑞隆源（RUILON）推出的一款贴片型压敏电阻（SMD varistor），封装为0805，专为抑制瞬态过电压和保护电子电路而设计。器件在遇到超过额定压敏电压的瞬态时迅速导通，将能量吸收并钳制电压，保护后续电路元件免受冲击损害。其小尺寸、表面贴装形式适合现代高密度 PCB 设计。
二、主要参数
- 型号：RL0805A470K（0805 封装）
- 压敏电压（Vr）：45.6V ~ 57V
- 钳位电压（Vc）：125V（典型钳位能力）
- 工作电压：DC 38V；AC 30V
- 峰值浪涌电流：50A（峰值/峰冲能力，具体测试波形请参见数据手册）
- 能量吸收：200 mJ
- 品牌：RUILON（瑞隆源）
三、性能特点
- 小型化封装（0805），便于表贴自动化生产与高密度布板。
- 压敏电压集中在45.6–57V区间，适合中低压直流或交流电路防护。
- 钳位电压能将瞬态电压限制在约125V，降低对后级器件的冲击。
- 单次能量吸收能力200 mJ、峰值浪涌电流50A，能有效吸收典型雷击或开关产生的短时浪涌能量。
- 良好的可靠性与重复防护能力（在规定能量范围内）。
四、典型应用场景
- 通用直流供电线路（如24V系统、车载低压电源防护，应注意工作电压限制）。
- DC/AC 接口、外部电源插座的瞬态过压保护。
- 各类通信接口、控制板、工业设备的浪涌抑制与浪涌旁路。
- 与其他保护元件（如保险丝、TVS）配合，构成多级防护体系。
五、设计与使用建议
- 工作电压限制：实际应用中请保证常态工作电压不超过器件标称工作电压（DC 38V、AC 30V），留有适当余量以延长寿命。
- 布局建议：将 RL0805A470K 放置在可能受浪涌入侵的接入口或连接器靠近处，确保到被保护器件的回路最短，以降低寄生感抗。
- 与其它元件配合：对于高能量雷击或持续冲击场景，建议与熔断器或限流元件串联；与 TVS 二极管并联可获得更快速的钳位与多级吸能效果。
- 可靠性维护：压敏电阻在经历大幅能量冲击后可能发生性能退化或参数漂移，遇到大浪涌事件后建议进行功能检测或更换。
六、可靠性与焊接注意事项
- 焊接工艺：适用于常规回流焊工艺，建议遵循厂家提供的回流温度曲线，避免过高峰值温度或过长停留时间以免影响器件特性。
- 存储与防护：避免受潮与强震动，静电防护按一般元件要求处理。
- 安全与测试：量产前建议在目标系统上进行 ESD、雷击（浪涌）等可靠性测试，确认在实际工作条件下的防护效果与寿命。
结语：RL0805A470K 凭借 0805 尺寸、约 47V 级压敏电压和良好的浪涌吸收能力，适合对中低压电路进行经济高效的瞬态抑制保护。具体选型与电路设计请参照瑞隆源完整的数据手册，并根据实际应用环境对器件做完整的可靠性验证。
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