WMSIC Electronic Components

Brightking 271KD05J

Model271KD05J
PackageThrough-hole
BrandBrightking
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
Brightking 271KD05J
Type
BRIGHTKING
Minimum package
1000 袋

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
271KD05J
Electronic Component
1
Package
Through-hole
Electronic Component
Varistor Resistor
Electronic Component
11J
Electronic Component
0.367g
Electronic Component
1
Varistor Voltage
243V~297V
Electronic Component
BM0265147988
Voltage
475V
Static Power
100mW
Static Capacitor
95pF@1kHz
Operating Voltage(AC)
175V
Operating Voltage(DC)
225V

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

Brightking 271KD05J 压敏电阻产品概述

Brightking(台湾君耀)作为全球知名的过压防护器件供应商,其271KD05J型号属于中高压插件式压敏电阻,针对中高电压环境下的浪涌冲击防护设计,具备参数稳定、可靠性高、适配性强的特点,广泛应用于工业控制、电源系统、家电等领域的过压防护场景。

一、产品定位与核心应用场景

271KD05J定位于中高压直流/交流电路的浪涌防护核心器件,主要解决电路中因雷击、开关瞬态、电源波动产生的过压冲击问题,保护后级敏感电子元件(如IC、电容、半导体功率器件)免受损坏。其典型应用场景包括:

  • LED驱动电源:适配AC110-220V输入的LED照明驱动,抑制电网浪涌对驱动电路的冲击;
  • 小型工业控制电源:用于DC200V以下的工业设备辅助电源,防护设备启动/关闭时的瞬态过压;
  • 家电高压模块:如洗衣机、空调的电机驱动高压部分,过滤电网异常波动;
  • 通讯设备辅助电源:基站、路由器等设备的低压直流电源端,增强浪涌防护能力。

二、核心电气参数深度解析

271KD05J的参数设计针对中高压场景优化,关键参数的实际意义如下:

  1. 压敏电压(243V~297V):标称值为270V(型号中“271”代表27×10¹=270V),误差范围±10%,是指在0.1mA直流电流下的电压值——当电路电压超过此范围时,器件开始导通分流,触发过压防护;
  2. 工作电压(DC225V/AC175V):长期连续工作的安全电压上限(DC为225V,AC为175V),若超过此值,器件会因持续漏电流导致老化加速,寿命缩短;
  3. 钳位电压(475V):在8/20μs标准浪涌波形下,器件两端的最大电压峰值,直接决定后级电路的防护效果——此值越低,对后级元件的保护越充分;
  4. 浪涌能力(峰值800A/能量11J):单次浪涌的最大承受能力,其中800A为8/20μs波形下的峰值电流,11J为浪涌能量容量,可有效应对常见的雷击(3kV/2kA级别)或开关浪涌;
  5. 静态电容(95pF@1kHz):器件在1kHz频率下的寄生电容,虽对低频电路影响较小,但需注意若应用于高频场景(如射频电路),需评估电容对信号的干扰;
  6. 静态功率(100mW):器件在额定工作电压下的最大功耗,发热低,可降低长期工作时的温度积累,提升可靠性。

三、封装与可靠性设计

271KD05J采用插件式封装(常见DIP封装形式),具备以下核心优势:

  • 安装兼容性:适配手工焊接、波峰焊等传统插件工艺,无需特殊贴装设备,适合中小批量生产或原型开发;
  • 机械强度:引脚牢固,抗振动性能优于贴片封装,适合工业环境中振动较大的场景;
  • 品牌可靠性:Brightking作为台湾老牌厂商,产品符合RoHS环保标准,经过严格的高低温循环(-40℃~85℃)、湿热老化(60℃/95%RH)等可靠性测试,典型工作寿命达10年以上。

四、选型与使用注意事项

为确保271KD05J的防护效果与长期可靠性,需注意以下要点:

  1. 选型匹配:
    • 工作电压需严格低于额定值(DC≤225V,AC≤175V),避免长期过压导致老化;
    • 浪涌能力需覆盖电路中可能出现的最大浪涌(如雷击浪涌通常为几百A,此器件800A峰值可满足多数场景);
  2. 安装规范:
    • 必须并联在被保护电路的输入端(如电源正极与地之间),无极性要求;
    • 焊接温度控制在260℃以内,焊接时间不超过3秒,避免高温损坏器件;
  3. 维护与更换:
    • 若电路中存在频繁浪涌,需定期检查器件是否老化(可通过测量压敏电压变化判断,若偏差超过±20%需更换);
    • 不可串联使用(压敏电阻需并联工作才能实现分流防护)。

五、典型应用案例分析

以户外LED路灯驱动电源浪涌防护为例: 某户外LED路灯驱动电源输入为AC220V,需符合GB/T 17626.5标准(3kV/2kA雷击浪涌测试)。采用271KD05J并联在AC输入两端:

  • 工作电压(AC175V)远低于AC输入电压的波动范围(180-240V?不,实际应用中需确保工作电压≤175V,因此需配合前端降压或稳压电路,确保输入电压稳定在175V以下);
  • 钳位电压475V可将浪涌电压限制在475V以内,保护后级整流桥、滤波电容;
  • 静态电容95pF对AC50Hz电网无明显干扰,不影响驱动效率。 经测试,该电源可通过3kV/2kA雷击浪涌测试,满足户外LED照明的防护要求。

总结:Brightking 271KD05J作为中高压插件压敏电阻,参数均衡、可靠性高,是工业控制、电源系统等领域过压防护的经济适用选择,尤其适合对成本敏感且需稳定防护的场景。

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