WMSIC Electronic Components

Brightking 301KD05

Model301KD05
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 301KD05
Type
BRIGHTKING
Minimum package
1000 袋

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
301KD05
Electronic Component
1
Package
Through-hole
Electronic Component
Varistor Resistor
Electronic Component
12J
Electronic Component
13g
Electronic Component
1
Varistor Voltage
300V
Electronic Component
BM0265147983
Voltage
520V
Static Power
100mW
Static Capacitor
85pF@1kHz
Operating Voltage(AC)
190V
Operating Voltage(DC)
250V

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

Brightking 301KD05 压敏电阻产品概述

一、产品基本定位与品牌背景

Brightking(台湾君耀)作为专注过压保护元器件的老牌厂商,其301KD05属于径向引线式压敏电阻系列,核心定位为中低压电路的浪涌防护元件,适用于家电、工业控制、小型电子设备等场景的过压保护需求,兼具可靠性与性价比。

二、核心电气参数详解

301KD05的关键参数直接决定防护能力与适用范围,各参数意义如下:

1. 压敏电压(300V)

压敏电阻的核心阈值参数,指测试电流0.1mA时的电压值——当电路电压超过300V时,压敏电阻电阻急剧下降(从兆欧级降至欧姆级),快速导通泄放浪涌电流,避免被保护元件因过压损坏。需注意:此值为“导通阈值”,并非长期工作电压。

2. 钳位电压(520V)

在8/20μs浪涌电流波形(模拟雷击或开关浪涌的典型波形)下,当浪涌电流达到峰值时,压敏电阻两端的电压上限。该参数直接决定被保护电路的耐压要求——若电路元件耐压低于520V,需搭配TVS管进一步钳位。

3. 长期工作电压(DC250V/AC190V)

  • DC250V:直流电路中可长期连续工作的电压,超过此值会加速老化,降低使用寿命;
  • AC190V:交流电路中可长期工作的电压(有效值),适配220V市电系统(实际市电波动下,190V为安全工作范围)。

4. 浪涌耐受能力(800A/12J)

  • 峰值浪涌电流(800A):单次可承受的最大浪涌电流峰值(8/20μs波形),超过此值可能导致击穿短路;
  • 浪涌能量(12J):可吸收的最大浪涌能量,反映对持续浪涌的耐受能力,适合家电开关浪涌、近距离雷击等中等强度场景。

5. 静态电容(85pF@1kHz)

压敏电阻的固有电容,对高频信号有一定影响。85pF属于中等水平,适合电源电路防护(对高频信号影响小),但需避免用于对电容敏感的射频电路。

6. 静态功率(100mW)

长期工作时的功耗,数值极小,不会对电路正常运行产生额外功率负担。

三、封装与物理特性

301KD05采用径向引线封装,具备以下优势:

  1. 安装便捷:适配PCB板通孔焊接,也可直接接线,适合批量生产与现场安装;
  2. 散热性好:引线直接连接焊盘,浪涌泄放时热量可快速传递至PCB,降低元件温度;
  3. 结构紧凑:径向封装占用空间小,适合小型电子设备的紧凑布局。

四、典型应用场景

结合参数特性,301KD05的常见应用包括:

  1. 家电电源防护:洗衣机、空调、冰箱等220V市电输入的过压防护,抵御开关浪涌与雷击;
  2. 工业控制回路:DC250V以下的控制电路(如PLC输入输出端)防护,避免电磁干扰引发的过压;
  3. 小型电子适配器:手机充电器、路由器电源等的AC输入防护,提升设备可靠性;
  4. 通信辅助电路:低信号电路的辅助电源防护(如监控摄像头电源端),静态电容对信号影响可控。

五、选型与使用注意事项

  1. 电压匹配:需确保电路长期工作电压≤额定值(DC≤250V,AC≤190V),避免过压老化;
  2. 浪涌匹配:若电路可能出现超过800A/12J的浪涌,需并联多个301KD05(注意压敏电压一致性,偏差≤5%);
  3. 安装注意:焊接时温度≤350℃,时间≤3s,避免过热损坏元件;引脚间距需匹配PCB设计;
  4. 并联TVS管:若被保护元件耐压低于520V,可并联低钳位电压的TVS管,进一步提升防护等级。

总结

Brightking 301KD05作为一款中低压径向引线压敏电阻,以300V压敏电压、520V钳位电压、800A浪涌电流等参数,适配多场景过压防护需求,兼具可靠性与安装便捷性,是家电、工业控制等领域的实用防护元件。

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