WMSIC Electronic Components

RUILON RL1206A391K

ModelRL1206A391K
Package1206
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RUILON RL1206A391K
Type
RUILON
Minimum package
2000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
RL1206A391K
Electronic Component
1
Package
1206
Electronic Component
Varistor Resistor
Electronic Component
500mJ
Electronic Component
0.43g
Electronic Component
1
Varistor Voltage
351V~429V
Electronic Component
BM0258838788
Voltage
650V
Operating Voltage(AC)
250V
Operating Voltage(DC)
320V
Surge Current
100A
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.

RL1206A391K 产品概述

一、产品概述

RL1206A391K 是瑞隆源(RUILON)推出的一款 1206 表面贴装压敏电阻(MOV),用于抑制瞬态过电压和浪涌冲击。器件体积小、响应快速,适合在有限空间内对电源总线或接口线路提供过压保护,尤其适用于中低能量的浪涌抑制场合。

二、主要参数

  • 压敏电压(V1mA 或典型值范围):351V ~ 429V(型号“391”表示典型压敏电压约 391V)
  • 钳位电压:650V(在规定浪涌条件下的钳位值)
  • 额定工作电压(DC):320V
  • 额定工作电压(AC):250V
  • 峰值浪涌电流:100A(单次脉冲条件下)
  • 吸收能量:0.5J(500mJ)
  • 封装:1206 SMD
  • 品牌:RUILON(瑞隆源)
  • 型号说明:后缀“K”通常表示公差约 ±10%,具体以厂家数据表为准。

三、性能特点

  • 钳位电压较低,能在高压瞬态发生时迅速夹住电压,保护后级元件。
  • 小尺寸 1206 封装,便于在 PCB 上节省空间并实现自动化贴片生产。
  • 0.5J 的能量吸收能力与 100A 峰值浪涌电流适合抑制小规模瞬态冲击和静电放电导致的瞬态过电压。
  • 结构可靠,适用于通用家电、工业控制与通讯设备等场景的线路保护。

四、典型应用

  • 开关电源输入端的浪涌保护(尤其是直流母线或整流后侧)
  • LED 驱动、电源模块的过压防护
  • 家用电器、消费类电子设备的内部防护电路
  • 通讯设备、仪表与控制端口的瞬态抑制
  • 与熔断器、限流器配合构成更完善的过压/过流保护方案

五、选型与布局建议

  • 连接方式:压敏电阻应并联连接在需保护的线对或线对—地之间(如 DC 母线对地、交流相对地或相间)。
  • 工作电压裕量:保证器件长期工作电压低于其压敏电压下限,并预留安全裕量;直流母线长期施加接近压敏电压会导致发热与寿命下降。
  • 能量需求评估:若系统可能出现高于 0.5J 的反复冲击,应考虑并联多个 MOV 或选择更高能量等级的器件,并配合熔断器/热敏开关实现熔断协调。
  • 布局与散热:靠近电源入口放置以缩短回路长度,避免紧邻热源和敏感元件;保证良好散热和焊盘热膨胀匹配。
  • 焊接处理:遵循厂商推荐回流焊曲线,避免长时间高温暴露导致性能退化。

六、包装与订购提示

  • 常见包装:1206 尺寸的卷带(tape & reel),便于贴片机贴装。
  • 订购型号示例:RL1206A391K(请在下单时注明电气参数与封装要求,并以厂商数据表为准)。
  • “K”后缀通常代表公差(≈±10%),如需更严格公差或其他电压等级,可咨询供应商提供系列型号。

七、注意事项与可靠性建议

  • 在潮湿或高温环境下储存和使用时应注意器件老化,必要时进行批次抽样测试。
  • 频繁或高能量浪涌会缩短 MOV 使用寿命,应结合保护级联设计(如先级熔断器)。
  • 实际设计中应参考厂商完整数据手册(包括 V–I 特性曲线、能量冲击测试条件、脉冲波形等)以完成精确的选型验证。

如需完整数据手册、浪涌波形条件(如 8/20μs)或样品测试报告,可提供项目应用场景与冲击要求,我可帮您进一步校验选型与布局建议。

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