WMSIC Electronic Components

Brightking 331KD05

Model331KD05
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 331KD05
Type
BRIGHTKING
Minimum package
1000 袋

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
331KD05
Electronic Component
1
Package
Through-hole
Electronic Component
Varistor Resistor
Electronic Component
9.5J
Electronic Component
0.397g
Electronic Component
1
Varistor Voltage
297V~363V
Electronic Component
BM0265147966
Voltage
570V
Static Power
100mW
Static Capacitor
75pF@1kHz
Operating Voltage(AC)
210V
Operating Voltage(DC)
275V

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

Brightking 331KD05 压敏电阻产品概述

一、产品核心定位与品牌背景

Brightking(台湾君耀)作为全球知名的过压保护器件厂商,其331KD05属于径向引线式氧化锌压敏电阻,核心定位为中高压电路的浪涌防护,适配长期工作电压为275V DC/210V AC的场景,广泛应用于家电、工业控制、照明等领域。君耀的压敏电阻以一致性好、可靠性高著称,331KD05延续了品牌的技术优势,是中高压电源防护的经典选型之一。

二、关键电气参数解析

压敏电阻的核心性能由电气参数决定,331KD05的关键参数及实际意义如下:

  1. 压敏电压(297V~363V)
    指器件在1mA测试电流下的电压值,公差±10%(以标称330V为基准)。该参数是器件的“触发阈值”——当电路电压超过此范围时,压敏电阻的电阻急剧下降,从高阻态转为低阻态,从而分流浪涌电流。

  2. 工作电压(DC275V/AC210V)
    长期连续工作时允许的最大电压,需注意DC与AC参数不可混淆:AC210V对应220V市电的典型波动范围(实际市电峰值约311V,远低于压敏电压阈值),DC275V适配直流电源系统的长期工作场景。

  3. 钳位电压(570V)
    浪涌发生时,器件能将电路电压钳位到的最大值(测试条件为额定浪涌电流)。该参数直接决定防护效果——若系统允许的最大电压不低于570V,331KD05可有效抑制浪涌对后级电路的冲击。

  4. 浪涌耐受能力(400A峰值/9.5J能量)

    • 400A峰值电流:单次浪涌的最大瞬间电流耐受值;
    • 9.5J能量:浪涌持续时间内的总能量耐受(I²Rt)。两者结合反映了器件对“瞬间冲击+持续能量”的综合防护能力,适合应对雷击、开关浪涌等典型场景。
  5. 静态电容(75pF@1kHz)
    器件的寄生电容,75pF属于中高压压敏电阻的低电容范围,可减少对高频信号的干扰,适合对电容敏感的电源电路(如LED驱动、通讯电源)。

  6. 静态功率(100mW)
    正常工作时的功耗,低功耗意味着器件发热小,长期可靠性高,可降低老化失效风险。

三、封装与物理特性

331KD05采用径向引线封装,具有以下特点:

  • 引脚从两端引出,适配传统插件式PCB安装,焊接工艺简单;
  • 封装尺寸紧凑(典型φ7mm左右),可节省电路板空间;
  • 工作温度范围宽(-40℃~+85℃),满足工业级环境的温度要求;
  • 引脚直径、长度符合行业标准,兼容常规焊接设备。

四、典型应用场景

331KD05的参数适配性使其在多个领域成为优选:

  1. 家电电源防护:空调、洗衣机、冰箱等的开关电源输入端口,防护市电浪涌、雷击及电机开关产生的瞬间冲击;
  2. 工业控制设备:PLC、变频器、伺服驱动器的交流输入模块,应对电网波动和工业现场的电磁干扰;
  3. 照明系统:LED路灯、大功率LED驱动电源,抑制线路浪涌对LED芯片的损坏;
  4. 通讯设备:基站、路由器、交换机的交流输入端口,防护雷电浪涌和电源瞬变。

五、产品优势与注意事项

核心优势

  • 精准防护:压敏电压公差合理,工作电压与市电/直流电源匹配度高,避免误触发或防护不足;
  • 均衡耐受:400A峰值电流+9.5J能量的组合,兼顾瞬间冲击和持续能量防护,可靠性优于单一电流指标的器件;
  • 低干扰:75pF静态电容对高频信号影响小,适合对电容敏感的电路;
  • 品牌保障:君耀的生产工艺成熟,产品一致性好,长期使用故障率低。

关键注意事项

  1. 不可超工作电压长期使用:若系统电压波动超过AC210V/DC275V,需加稳压电路或更换更高工作电压的型号;
  2. 焊接规范:焊接温度不超过260℃,焊接时间不超过10秒,避免引脚应力过大损坏器件;
  3. 并联使用限制:若需更高浪涌耐受,可并联多个器件,但需注意均流(避免单个器件过载);
  4. 钳位电压匹配:需确认系统后级电路的最大耐受电压不低于570V,否则需选择钳位电压更低的型号。

六、选型与替换参考

  • 同参数替换:君耀同系列的331KD05(标称330V)可直接替换其他品牌对应参数的压敏电阻(如压敏电压330V±10%、AC210V工作电压、钳位570V、400A/9.5J);
  • 参数调整:若系统工作电压为AC230V,可选择君耀390V系列(如391KD05);若浪涌要求更高,可选择能量更大的型号(如15J级)。

综上,Brightking 331KD05是一款性能均衡、可靠性高的中高压压敏电阻,适用于大多数需要浪涌防护的电源电路,是工程选型中常用的经典型号。

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