WMSIC Electronic Components

RUILON RL1206A270K

ModelRL1206A270K
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 25+

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Technical data

Product details

19 specifications

Core information

Product name
RUILON RL1206A270K
Type
RUILON
Minimum package
3000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
RL1206A270K
Electronic Component
1
Package
1206
Electronic Component
Varistor Resistor
Electronic Component
500mJ
Electronic Component
0.4g
Electronic Component
1
Varistor Voltage
26.4V~33V
Electronic Component
BM0264391784
Voltage
72V
Operating Voltage(AC)
17V
Operating Voltage(DC)
22V
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.

RL1206A270K 压敏电阻产品概述

RL1206A270K是瑞隆源(RUILON)品牌推出的表面贴装型压敏电阻,采用1206标准封装,专为电子电路中的瞬态过压防护设计,可有效抑制雷击、静电放电(ESD)、开关浪涌等干扰,保护后端敏感元器件(如IC、传感器)免受损坏。

一、产品核心定位与防护原理

压敏电阻是电压敏感型非线性器件:常态下呈高阻态(兆欧级),不影响电路正常工作;当电压超过其压敏电压阈值时,电阻迅速降至低阻态(欧姆级),通过分流浪涌电流、钳位电压至安全范围,实现过压防护。

RL1206A270K针对中低压电路场景优化,平衡了体积、防护能力与成本,适合高密度PCB设计需求(如消费电子、工业控制等领域)。

二、关键电气参数解析

核心参数直接决定防护性能,具体解析如下:

  1. 压敏电压(26.4V~33V)
    指1mA直流测试电流下的电压范围,标称值约27V(型号“270”对应27V)。该范围覆盖工艺公差与温度变化,确保不同环境下的一致性。

  2. 钳位电压(72V)
    浪涌电流峰值时的最大电压(测试波形为8/20μs),是防护核心指标——后端器件耐压需≥72V,才能被有效保护。

  3. 工作电压(DC22V/AC17V)
    长期稳定工作的电压上限,不得超过(否则加速老化)。例如,电路常态电压为DC12V~20V时,器件可可靠工作。

  4. 峰值浪涌电流(100A)
    单次浪涌的最大允许电流峰值(8/20μs波形),超过则可能击穿器件。

  5. 能量耐受(500mJ)
    单次浪涌的最大能量吸收能力,可匹配多数日常浪涌(如静电放电能量通常为几毫焦至几十毫焦)。

三、封装与物理特性

采用1206表面贴装封装(英制:长0.12英寸=3.05mm,宽0.06英寸=1.52mm;公制3216),具备以下优势:

  • 体积小巧:适配智能手机、智能穿戴等高密度PCB;
  • SMT兼容:支持回流焊、波峰焊(最高260℃回流焊温度,符合RoHS无铅要求);
  • 高可靠性:封装紧凑,抗振动、抗冲击满足工业级/消费级需求。

四、典型应用场景

因参数适配性强,广泛应用于:

  1. 消费电子:手机/平板充电接口(USB-C/Micro-USB)防护,防止电源浪涌损坏充电IC;
  2. 工业控制:PLC模块、传感器接口、低压变频器的过压防护,应对电磁干扰(EMI)或开关浪涌;
  3. 小家电:LED台灯、充电器、智能家居设备的电源输入端口,抑制雷击或电网波动;
  4. 通信设备:路由器、交换机、光模块的信号/电源端口防护,避免浪涌影响数据传输;
  5. 低压汽车电子:12V车载电路(中控屏、行车记录仪)防护,应对点火浪涌或静电干扰。

五、选型与使用注意事项

  1. 压敏电压匹配:需高于电路常态电压(如电路DC24V,选27V更安全),避免常态导通;
  2. 钳位电压兼容:后端器件耐压≥72V,否则防护无效;
  3. 浪涌能量验证:根据场景浪涌类型(如雷击1.2/50μs波形),确认500mJ是否满足;
  4. 焊接工艺:避免过温焊接(回流焊时间≤30秒),防止性能下降;
  5. 老化监测:长期接近DC22V上限时,定期检测压敏电压变化,及时更换老化器件。

综上,RL1206A270K是一款性能稳定、体积小巧的中低压过压防护器件,可满足多数领域的浪涌防护需求,是电路设计中可靠的“电压守门员”。

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