WMSIC Electronic Components

RUILON RL0603A390K

ModelRL0603A390K
Package0603
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 RL0603A390K
Type
RUILON
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
RL0603A390K
Electronic Component
1
Package
0603
Electronic Component
Varistor Resistor
Electronic Component
300mJ
Electronic Component
0.039g
Electronic Component
1
Varistor Voltage
36V~45V
Electronic Component
BM0264391814
Voltage
99V
Operating Voltage(AC)
25V
Operating Voltage(DC)
30V
Surge Current
30A
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.

RL0603A390K压敏电阻产品概述

RL0603A390K是瑞隆源(RUILON)推出的一款小封装表面贴装压敏电阻,专为低电压电路的瞬态浪涌防护设计,兼具体积紧凑、防护性能稳定的特点,广泛适配消费电子、物联网终端等高密度PCB场景。

一、产品定位与核心特性

该器件属于低电压瞬态抑制型压敏电阻,核心作用是吸收电路中的静电放电(ESD)、雷击浪涌或开关瞬态过压,避免后端敏感元器件(如MCU、传感器、电源芯片)因过压损坏。其核心特性可概括为:

  • 小封装0603(1608公制),适配高密度PCB设计;
  • 压敏电压范围36V~45V(标称39V),匹配DC30V/AC25V工作场景;
  • 浪涌耐受能力30A(8/20μs峰值)/300mJ,满足中等强度浪涌防护需求;
  • 符合RoHS环保标准,可靠性符合工业级器件要求。

二、关键参数深度解析

压敏电阻的性能需通过核心参数精准匹配电路需求,RL0603A390K的关键参数如下:

1. 压敏电压(V1mA)

  • 范围:36V~45V(标称39V,公差±10%);
  • 定义:电流为1mA时的电压值,是器件的“导通阈值”——当电路电压超过该范围时,电阻急剧下降,开始吸收浪涌能量;
  • 选型逻辑:长期工作电压需低于压敏电压的80%(DC场景)或65%(AC场景),本产品DC30V(39V×77%)、AC25V(39V×64%)均满足此要求,避免长期过压老化。

2. 钳位电压(Vc)

  • 典型值:99V(浪涌电流30A时);
  • 定义:浪涌电流达到峰值时,器件两端的最大电压,直接决定后端元器件的防护效果;
  • 意义:本产品钳位电压远低于敏感元器件的击穿电压(如MCU通常耐受50V~100V),可有效抑制过压冲击。

3. 工作电压(额定电压)

  • DC:30V;AC:25V;
  • 定义:器件可长期稳定工作的最大电压,超过该值会导致漏电流增大、性能衰减;
  • 应用边界:仅适用于DC≤30V、AC≤25V的电路,不可用于高压场景。

4. 浪涌耐受能力

  • 峰值浪涌电流:30A(8/20μs标准浪涌波形);
  • 能量:300mJ;
  • 说明:8/20μs波形是模拟雷击浪涌的典型脉冲,30A峰值可覆盖多数消费电子、小型工业电路的浪涌强度。

三、封装与可靠性设计

RL0603A390K采用0603表面贴装封装(英制尺寸:0.06″×0.03″,公制1.6mm×0.8mm),具有以下设计优势:

  1. 体积紧凑:适配高密度PCB(如智能手机、智能手表的主板),不占用额外空间;
  2. 焊接兼容性:支持回流焊、波峰焊工艺,焊接温度范围(峰值≤260℃,时间≤30s)符合行业标准;
  3. 可靠性保障:瑞隆源采用高纯度氧化锌陶瓷材料,经高温烧结工艺制备,具备:
    • 宽工作温度范围(-55℃~125℃),适应极端环境;
    • 低漏电流(≤5μA@DC30V),长期工作稳定性强;
    • 抗机械冲击(符合MIL-STD-202标准),适合振动场景(如汽车电子附件)。

四、典型应用场景

RL0603A390K的参数特性使其适配以下低电压电路:

  1. 小型直流电源模块:如5V/12V转24V/30V的电源适配器、LED驱动电源,防护开关浪涌;
  2. 消费电子接口:智能手机/平板的USB Type-C接口、耳机接口,吸收静电放电(ESD);
  3. 物联网终端:传感器节点(如温湿度传感器、门禁读卡器)、小型控制器,防护无线通信干扰浪涌;
  4. 汽车电子低压附件:车载USB充电口、LED氛围灯、胎压监测传感器,适配车载DC12V/24V系统的低电压分支;
  5. 工业控制小型电路:PLC的输入输出(I/O)端口、小型继电器线圈,防护电网瞬态过压。

五、选型与使用注意事项

为确保防护效果与器件寿命,需注意以下要点:

  1. 参数匹配:
    • 压敏电压需高于电路最大工作电压的1.2倍(DC场景);
    • 浪涌能力需覆盖电路实际浪涌峰值(如USB接口浪涌通常≤20A,本产品30A满足);
  2. 焊接规范:避免焊接温度过高或时间过长,防止陶瓷体开裂;
  3. 并联使用:若浪涌需求超过30A,可并联2~3个同型号器件(注意均流,避免单器件过载);
  4. 避免过压:禁止长期工作在DC30V/AC25V以上,否则会加速老化失效;
  5. 存储条件:常温(25℃±5℃)、干燥(湿度≤60%)环境存储,避免受潮。

综上,RL0603A390K是一款性能均衡的小封装压敏电阻,适合低电压电路的瞬态防护,可有效提升电路的抗干扰能力与可靠性。

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