WMSIC Electronic Components

RUILON RL1210A470K

ModelRL1210A470K
Package1210
BrandRUILON
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RUILON RL1210A470K
Type
RUILON
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
RL1210A470K
Electronic Component
1
Package
1210
Electronic Component
Varistor Resistor
Electronic Component
800mJ
Electronic Component
0.074g
Electronic Component
1
Varistor Voltage
45.6V~57V
Electronic Component
BM0259569921
Voltage
125V
Operating Voltage(AC)
30V
Operating Voltage(DC)
38V
Surge Current
250A
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.

RL1210A470K 产品概述

一、产品简介

RL1210A470K 为 RUILON(瑞隆源)推出的贴片压敏电阻(MOV),采用1210封装,面向低电压直流/交流系统的过电压浪涌保护。器件在正常工作电压下稳定工作,在发生瞬态过电压时迅速导通,将能量吸收并限制钳位电压,保护下游电路元件免受冲击。

二、主要技术参数

  • 压敏电压(Vn):45.6V ~ 57V(制造公差范围)
  • 工作电压(DC):38V(最大连续直流电压)
  • 工作电压(AC):30V(最大连续交流有效值)
  • 钳位电压(Vc):125V(在规定浪涌条件下测得)
  • 峰值浪涌电流:250A(典型单次浪涌能力,常以8/20μs波形评估)
  • 吸收能量:0.8J(800mJ,器件对单次浪涌的能量吸收能力)
  • 封装:1210(约3.2mm × 2.5mm)
  • 品牌:RUILON(瑞隆源)
  • 型号说明:尾缀“K”通常表示压敏电阻压敏电压公差为±10%,具体以厂家资料为准。

三、主要特性

  • 小型SMD封装,适合集成化印刷电路板设计,便于自动贴装与回流焊生产。
  • 设计用于低电压直流/交流系统的瞬态抑制,响应速度快、钳位稳定。
  • 单次能量吸收能力可达0.8J,配合250A峰值浪涌电流可应对常见的电气冲击事件。
  • 钳位电压125V能够在保护电路与器件间提供有效限幅,但仍需按系统耐受电压评估是否满足要求。

四、典型应用场景

  • 工业与楼宇控制中低压DC/AC侧的浪涌抑制(如24V系统、汽车电子的某些子系统需谨慎匹配)。
  • 通信设备、监控、电源模块及小型电源适配器的输入端浪涌保护。
  • 便携式设备或电池供电设备的反向或瞬态过压缓解(需注意连续工作电压限制)。
    (注:在48V直流系统中应核对连续工作电压是否满足,RL1210A470K的DC工作电压为38V,通常不适用于连续48V场景。)

五、封装与安装要点

  • 1210封装(约3.2×2.5mm)适合SMT自动贴装。建议器件尽量靠近需保护的输入端,缩短引线回路以降低感性耦合。
  • PCB布局应留意热量分散与焊盘面积,必要时采用散热铜箔或加厚过孔。
  • 焊接时遵循厂家回流焊曲线,避免超温或长时间高温影响压敏材料特性。

六、选型与注意事项

  • 选型首要确保压敏电压与系统工作电压有足够裕量:连续工作电压应显著低于压敏电压,以避免器件长时间触发。
  • 验证钳位电压是否对被保护电路安全(例如下游电容、电感或半导体的最高耐压)。
  • 关注浪涌规范(峰值电流、波形8/20μs或10/1000μs等)与能量吸收能力的匹配。
  • 考虑温度系数、漏电流与电容值对电路性能的影响,必要时向厂商索取完整Datasheet与测试曲线。

七、可靠性与测试建议

  • 出厂数据通常基于标准波形(如8/20μs)与特定测试条件,设计时应要求厂商提供典型V-I特性曲线、钳位随电流变化曲线以及能量吸收寿命测试。
  • 在目标应用做耐压、浪涌(多次冲击)和温度循环测试,验证在实际环境下的稳定性与寿命。
  • 对于重复冲击场景,应评估器件在循环浪涌下的退化情况并预留维护或更换策略。

八、结论

RL1210A470K 以小尺寸的1210封装提供了良好的低压瞬态保护能力,适合多数24V及更低电压系统的输入侧浪涌防护。选型时应严格对照系统连续工作电压、钳位需求和浪涌能量规范,并结合厂方完整datasheet与现场测试,确保保护效果与长期可靠性。若需更高连续电压或更大能量吸收能力,可考虑更大封装或并联/组合保护方案,并与瑞隆源技术支持沟通获取详细参数与应用建议。

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