WMSIC Electronic Components

RUILON 14D390K

Model14D390K
PackageThrough-hole, P=7.5mm
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 14D390K
Type
RUILON
Minimum package
250

Technical parameters

Electronic Component
RUILON
Electronic Component
14D390K
Electronic Component
1
Package
Through-hole, P=7.5mm
Electronic Component
Varistor Resistor
Electronic Component
7J
Electronic Component
1.72g
Electronic Component
1
Varistor Voltage
35V~43V
Electronic Component
BM0227754545
Voltage
77V
Static Power
100mW
Static Capacitor
7.5nF@1kHz
Operating Voltage(AC)
25V
Operating Voltage(DC)
31V
Surge Current
1kA

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

14D390K 产品概述

一、产品简介

14D390K 为 RUILON(瑞隆源)品牌的插件型压敏电阻(MOV),适用于低压直流和交流系统的浪涌吸收与过压保护。该器件以较小的体积提供可靠的瞬态能量吸收能力,适合电源线、通信接口及各类电子模块的过压防护应用。

二、主要参数

  • 压敏电压(Varistor Voltage):35V ~ 43V
  • 钳位电压(Clamping Voltage):77V
  • 工作电压:直流 DC 31V;交流 AC 25V
  • 峰值浪涌电流(Ipk):1 kA
  • 能量吸收能力:7 J
  • 静态电容:7.5 nF @ 1 kHz
  • 静态功率耗散:100 mW
  • 封装形式:插件,直插式引脚节距 P = 7.5 mm
  • 品牌:RUILON(瑞隆源)

三、产品特点

  • 高效能量吸收:7 J 的瞬态能量吸收能力,可在短时浪涌下迅速钳位电压,保护后端电路元件。
  • 低钳位电压:典型钳位电压 77V,有利于降低被保护器件承受的峰值电压冲击。
  • 适配低压系统:工作电压 DC 31V、AC 25V,适用于许多12V/24V类电源与信号线保护场景。
  • 较小电容:7.5 nF@1kHz 的静态电容,有助于在对高速信号敏感的线路中减小影响。
  • 插件封装:直插式、引脚间距7.5mm,便于波峰焊或手工焊接,利于维修与更换。

四、典型应用

  • 直流/交流小功率电源输入侧的浪涌保护(如适配器、DC-DC 模块)。
  • 工业控制、仪表与传感器接口的过压防护。
  • 通信设备及接口线路的瞬态抑制(在容许的电容影响范围内)。
  • 家电、电源滤波模块等场合的主被动保护元件。

五、封装与机械信息

14D390K 为插件式碟形压敏电阻,常见安装方式为穿孔插装或面向波峰焊的手工焊接。引脚节距 P = 7.5 mm,适配常规通孔 PCB 孔距。器件直径与厚度需参考具体出货样片以确定PCB布局——选型时请确认实际外形尺寸以确保机械兼容。

六、使用建议与注意事项

  • 浪涌能力说明为瞬态峰值,长时间重复高能量冲击会降低器件寿命。建议在设计中留出适当裕量并采用并联/串联等保护策略(视系统需求)。
  • 压敏电阻为双向器件(若使用单向需按具体型号确认),在电路中应确保极性与布局符合预期保护方向。
  • 静态功率 100 mW 表示连续泄漏功耗限制,工作环境中若存在长期偏压,应评估器件温升与热稳定性。
  • 在对高速信号线保护时,请综合考虑 7.5 nF 的电容影响,必要时使用更低电容的保护元件或在保护器件前加入耦合/隔离电路。
  • 贮存与焊接时避免高温过久,焊接工艺应参考供应商给出的温度曲线以防损伤器件特性。

七、订购信息与售后

  • 品牌:RUILON(瑞隆源),型号:14D390K,封装:插件,节距 P=7.5mm。
  • 采购时请确认批次与样片特性,对关键应用建议索取样品并进行可靠性测试。
  • 如需更详细的电气特性曲线(如 I-V 曲线、钳位电压随浪涌电流的变化、耐久寿命数据)或机械尺寸图,请联系供应商或提供器件数据表以获得完整技术资料。

总结:14D390K 是一款面向低压应用的插件型压敏电阻,凭借 1kA 峰值浪涌能力与 7J 能量吸收,适用于多种工业与消费电子的瞬态过压保护场景。在实际设计中请结合电路工作电压、允许钳位及电容影响进行综合评估。

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