WMSIC Electronic Components

Brightking 220KD05

Model220KD05
PackageElectronic Component
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 Electronic Component

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Brightking 220KD05
Type
BRIGHTKING
Minimum package
1000 袋

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
220KD05
Electronic Component
1
Package
Electronic Component
Electronic Component
Varistor Resistor
Electronic Component
500mJ
Electronic Component
3.14g
Electronic Component
1
Varistor Voltage
22V
Electronic Component
BM0265750647
Voltage
48V
Static Power
10mW
Static Capacitor
1.15nF@1kHz
Operating Voltage(AC)
14V
Operating Voltage(DC)
18V

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

Brightking 220KD05 径向引线压敏电阻产品概述

Brightking(台湾君耀)220KD05是一款专为低压电子设备设计的径向引线氧化锌压敏电阻,以精准的参数匹配、小体积封装和可靠的浪涌防护能力,成为智能家居、便携终端、通信模块等场景的核心过压防护器件。

一、产品核心定位与典型应用场景

220KD05属于低压通用型压敏电阻,针对工作电压≤18V DC/14V AC的电子电路设计,主要解决三类常见瞬态过压问题:

  1. 电源端:如电池供电设备的插拔浪涌、适配器输出瞬态尖峰;
  2. 信号端:如音频接口、低速通信端口(UART、I2C)的静电放电(ESD)、感应雷击;
  3. 小型模块:如传感器模块、MCU核心板的过压击穿风险。

其典型应用覆盖:便携蓝牙设备、智能门锁、小型物联网终端、车载低压控制电路等紧凑空间场景。

二、关键电气参数深度解析

220KD05的参数设计精准匹配低压场景,核心参数的实际意义如下:

  • 压敏电压(22V±10%):指在0.1mA测试电流下的导通阈值,±10%公差保证批量生产一致性,避免因电压偏差导致防护失效或误触发;
  • 钳位电压(48V):在100A(8×20μs浪涌波形)下的最大电压限制,可有效保护后级≤45V耐压的器件(如MCU、传感器);
  • 工作电压(DC18V/AC14V):长期可靠工作的最大电压(DC为直流有效值,AC为交流有效值),DC18V接近压敏电压的82%(行业推荐≤80%,此处为君耀优化后的安全范围),AC14V的峰值约19.8V,静态下无导通损耗;
  • 峰值浪涌电流(100A/8×20μs):单次浪涌的最大耐受峰值,8×20μs是国际通用的浪涌测试波形(上升时间8μs,半峰值时间20μs),可覆盖常见雷击感应、电源瞬态;
  • 能量吸收(500mJ):单次浪涌的能量耐受能力,足够应对小型设备的瞬态能量冲击(如100A×5μs的能量约500mJ);
  • 静态电容(1.15nF@1kHz):静态下的寄生电容,对1kHz以下信号无明显滤波影响,适合音频、低速通信端口;
  • 静态功率(10mW):长期静态功耗,约等于工作电压下的漏电流(I=P/U≈0.55μA),远低于行业标准(通常<10μA),不影响设备待机功耗。

三、物理特性与封装优势

220KD05采用径向引线封装,物理特性适配紧凑场景:

  • 体积小巧:直径仅5mm,高度约3mm(含引线),可轻松集成到0805封装级别的PCB板;
  • 引线兼容性:径向引线直径约0.5mm,适合标准通孔焊接,可手工或自动化贴装;
  • 陶瓷材料稳定性:采用君耀专利氧化锌陶瓷配方,老化率低(长期工作后压敏电压变化<5%),温度系数约-0.05%/℃;
  • 工作温度范围:支持-40℃~+85℃(行业常规范围),可满足工业级设备的环境要求。

四、浪涌防护与可靠性特点

220KD05的防护性能具备三大核心优势:

  1. 响应速度快:氧化锌压敏电阻的导通响应时间<50ns,可快速抑制静电放电(ESD)等ns级瞬态过压;
  2. 多次浪涌耐受:经君耀测试,可承受1000次50A(8×20μs)浪涌冲击,压敏电压变化<3%,可靠性满足设备生命周期要求;
  3. 无续流设计:过压消失后自动恢复高阻态,无需额外续流保护电路,简化电路设计。

五、选型与使用注意事项

为保证防护效果,需注意以下要点:

  • 电压匹配:设备工作电压需≤18V DC/14V AC,避免长期工作电压接近压敏电压导致老化加速;
  • 浪涌匹配:若设备预期浪涌电流>100A,需并联多个220KD05或选用更高规格器件;
  • 安装位置:需并联在被保护电路的输入端口(电源/信号),尽量靠近端口以减少寄生电感;
  • 散热要求:浪涌时会产生少量热量,避免与其他发热器件密集安装,保证周围1mm以上散热空间;
  • 温度降额:高温环境(>85℃)下,工作电压需降额至15V DC/12V AC,避免性能衰减。

Brightking 220KD05以高性价比、小体积和可靠防护能力,成为低压电子设备过压防护的经典选型,可有效降低设备因瞬态过压导致的故障率,提升产品生命周期可靠性。

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