WMSIC Electronic Components

KNSCHA 14D561K68RV0007 Metal Oxide Varistor 14D561K68RV0007

Model14D561K68RV0007
PackageP=7.5mm
BrandKNSCHA
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 Option 168935

Availability on request

Technical data

Product details

19 specifications

Core information

Product name
KNSCHA 14D561K68RV0007
Type
KNSCHA
Minimum package
500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
KNSCHA
Electronic Component
14D561K68RV0007
Electronic Component
1
Package
P=7.5mm
Electronic Component
Varistor Resistor
Electronic Component
170J
Electronic Component
2.698g
Electronic Component
1
Varistor Voltage
504V~616V
Electronic Component
BM0266196462
Voltage
920V
Static Power
600mW
Static Capacitor
400pF@1kHz
Operating Voltage(AC)
350V
Operating Voltage(DC)
460V

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

KNSCHA 14D561K68RV0007 压敏电阻产品概述

一、产品核心定位与应用场景

KNSCHA 14D561K68RV0007是一款高压径向引线压敏电阻,属于科尼盛(KNSCHA)14D系列,专为中等强度瞬态过压防护设计。其核心应用场景覆盖:

  • 工业电源:PLC、伺服驱动器、开关电源的输入/输出防护;
  • 新能源领域:光伏逆变器直流侧、充电桩交流输入端防护;
  • 家电高压电路:变频空调、电磁炉、高压清洗机的电压尖峰抑制;
  • 通信设备:基站辅助电源、光模块的过压保护。

二、关键电气参数深度解析

1. 压敏电压与工作电压范围

标称压敏电压为560V(型号中“561”表示56×10¹V),公差±10%,实际区间为504V~616V。这一精准公差确保:

  • 连续工作电压不超过DC460V/AC350V时,器件处于稳定截止状态,无漏电流过载;
  • 当电路电压超过压敏电压时,快速导通泄放浪涌,避免后级器件损坏。

2. 浪涌防护能力

  • 峰值浪涌电流:3kA(8/20μs波形),可应对近距离雷击、大功率开关操作的瞬态冲击;
  • 浪涌吸收能量:170J,能有效抑制持续时间较长的电压尖峰(如电机启动浪涌)。

3. 钳位特性

当浪涌电压触发器件导通后,钳位电压稳定在920V左右,可将后级电路的过压限制在安全范围内(如MOS管、电容的耐压阈值内)。

4. 静态参数

  • 静态电容:400pF@1kHz,适合低频电路防护(如电源输入、直流母线),高频电路需搭配陶瓷电容;
  • 静态功率:600mW,连续工作时需控制功耗不超过此值,避免热老化。

三、结构设计与封装特性

该产品采用径向引线封装,关键设计特点:

  • 引脚间距:P=7.5mm,符合标准PCB布局规范,焊盘尺寸适配(建议焊盘直径2.5~3mm);
  • 封装直径:约14mm(14D系列命名依据),体积紧凑,可在密集PCB中灵活布局;
  • 封装材料:环氧模塑化合物,具备防潮、绝缘(耐压≥10kV)、耐温(-40℃~85℃)性能,适应工业/户外环境;
  • 引脚材质:铜镀锡,焊接兼容性好,可通过回流焊/波峰焊(焊接温度≤260℃,时间≤5秒)。

四、性能优势与选型参考

1. 核心优势

  • 电压公差精准:±10%避免“过防护”(误触发)或“防护不足”(漏电流过大);
  • 浪涌密度高:170J能量吸收能力在14mm直径器件中表现突出;
  • 品牌可靠性:科尼盛作为国内压敏电阻主流品牌,产品经过UL、CE认证,一致性稳定。

2. 选型替代参考

若需更高浪涌能力,可升级至14D561K100RV0007(浪涌5kA);若电压需求更低,可选择14D471K(470V±10%)。

五、典型应用电路示例

以充电桩交流输入防护为例:

  1. 将14D561K68RV0007并联于火线(L)-零线(N) 之间,抑制线间浪涌;
  2. 并联于L-地线(PE)、N-PE 之间,抑制共模浪涌;
  3. 搭配陶瓷电容(0.1μF)进一步滤除高频干扰,形成完整防护回路。

六、应用注意事项

  1. 连续工作电压不得超过DC460V/AC350V,避免长时间过载老化;
  2. 浪涌次数限制:3kA浪涌下约500次,建议每半年检测一次压敏电压(变化率≤10%则可继续使用);
  3. 安装时避免引脚弯曲半径过小(≥2mm),防止封装开裂;
  4. 高温环境(如光伏逆变器内部)需增加散热片,避免器件温度超过85℃。

该产品凭借精准的电压参数、可靠的浪涌防护能力,成为工业电源、新能源等领域高压过压保护的优选器件。

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