WMSIC Electronic Components

RUILON 2R470TB-8 2R470TB

Model2R470TB-8
Package8x6mm
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 2R470TB-8
Type
RUILON
Minimum package
800 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
2R470TB-8
Electronic Component
1
Package
8x6mm
Electronic Component
2
Electronic Component
(GDT)
Electronic Component
±20%
Electronic Component
1.85g
Electronic Component
6mm
Electronic Component
1
(φD)
8mm
Electronic Component
BM0264242019
Operating Temperature
40℃~+90℃
Capacitor
1.5pF
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.

2R470TB-8气体放电管(GDT)产品概述

一、产品基本信息

2R470TB-8是瑞隆源(RUILON) 推出的轴向引线式2极气体放电管(GDT),属于过压保护核心元器件,核心作用是抑制雷击、系统浪涌等瞬态过电压对电子电路的损害。该型号采用8×6mm小型化封装,安装便捷,适配通信、工业、安防等多领域设备的防护需求。

二、核心电气参数解析

(1)直流击穿电压(Vdc)

规格为470V±20%,是GDT在直流电压下开始导通的阈值。正常工作时(线路电压远低于470V),器件处于高阻态,不影响电路信号传输;当线路出现过压(如雷击浪涌)时,超过该阈值则迅速导通泄放电流,保护后端电路。

(2)脉冲放电电流

耐受能力达10kA(8/20μs标准浪涌波形),这是衡量GDT泄放大电流能力的关键指标。户外环境中雷击浪涌电流常达数kA,10kA的耐受值可有效应对中等强度雷击或系统级浪涌冲击,避免器件损坏。

(3)极间电容

仅1.5pF,低电容是该型号的核心优势之一。高频信号线路(如射频、通信)对电容敏感,低电容可避免信号衰减、相位偏移,因此适配射频天线、通信接口等高频场景,不影响信号质量。

(4)冲击击穿电压(Vimp)

规格为900V,是GDT在快速上升的浪涌冲击下的实际导通电压(因浪涌上升时间短,器件响应需要时间,故比直流击穿电压高)。该参数确保瞬态过电压下器件能快速动作,第一时间保护后端电路。

(5)工作温度范围

覆盖**-40℃~+90℃**,宽温设计可适应户外低温(如北方冬季)、工业现场高温(如车间设备)等严苛场景,无需额外温度补偿,可靠性更高。

三、机械与封装特性

  • 封装类型:轴向引线式,便于PCB板焊接或导线连接,安装灵活;
  • 尺寸规格:直径φ8mm、高度6mm,小型化设计不占用额外空间,适配高密度电路布局(如通信基站模块、小型安防摄像头);
  • 引线结构:标准轴向引线,机械强度适中,焊接可靠性高,可避免虚焊问题。

四、典型应用场景

2R470TB-8的参数特性使其适配多类电子设备的过压防护,典型场景包括:

(1)通信设备

基站、路由器、交换机等设备的信号端口防雷:低电容不影响通信信号传输,10kA耐受可应对基站户外雷击;

(2)射频电路

天线、射频模块、卫星接收机等射频接口防护:低电容避免射频信号衰减,确保信号质量稳定;

(3)工业控制

PLC、传感器、工业网关等设备的电源/信号端防护:宽温范围适应工业现场高低温,470V击穿电压匹配220V/380V工业电源的防护需求;

(4)安防监控

户外摄像头、DVR、NVR等设备接口防护:10kA耐受应对户外雷击,小型封装适配摄像头紧凑结构;

(5)消费电子

机顶盒、智能路由器、智能家居设备的防雷设计:成本可控,防护效果满足家庭环境浪涌需求。

五、选型与使用注意事项

(1)参数匹配原则

需根据被保护电路的工作电压选择GDT:建议GDT直流击穿电压为电路工作电压的2~3倍(如220V电路选470V型号,安全系数充足);

(2)安装方式

必须并联在被保护线路与地之间(串联会导致GDT导通时切断电路),且引线尽量短(减少寄生电感,提升响应速度);

(3)多级防护配合

建议与TVS管、压敏电阻配合使用:GDT作为前级泄放器件(泄放10kA大电流),TVS管作为后级钳位器件(将剩余电压钳位到电路耐受值),形成完整防护;

(4)环境适配

宽温范围可用于户外、工业等场景,但需避免直接暴露在强酸强碱环境中(可能腐蚀封装);

(5)寿命考量

GDT为可重复使用器件,但多次大电流冲击后性能会下降,建议按设备维护周期(如1~2年)定期检测或更换。

综上,2R470TB-8凭借低电容、大电流耐受、宽温适配等特性,成为通信、工业、安防等领域高频/高防护需求场景的理想选择。

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