WMSIC Electronic Components

IHHEC C1812X472K202T

ModelC1812X472K202T
Package1812
BrandIHHEC
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

18 specifications

Core information

Product name
IHHEC C1812X472K202T
Type
IHHEC
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
IHHEC
Electronic Component
C1812X472K202T
Electronic Component
1
Electronic Component
4.7nF
Package
1812
Electronic Component
SMD Capacitor(MLCC)
Electronic Component
±10%
Electronic Component
0.287g
Electronic Component
1
Electronic Component
BM0265389809
Electronic Component
X7R
Voltage
2kV
Electronic Component
Electronic Component
Electronic Component
1000

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

C1812X472K202T 多层陶瓷贴片电容(MLCC)产品概述

一、产品基本属性与标识解析

C1812X472K202T是禾伸堂(IHHEC) 推出的高压多层陶瓷贴片电容(MLCC),专为工业级高压场景设计。型号命名遵循行业通用规则,各部分含义清晰:

  • C:电容标识;
  • 1812:封装规格(英制代码,对应公制4532,即尺寸约4.5mm×3.2mm);
  • 472:容值编码(47×10²pF=4.7nF);
  • K:精度等级(±10%);
  • 202:额定电压编码(20×10²V=2kV);
  • T:附加参数(匹配X7R温度特性,无极性)。

该产品兼顾小容值、高耐压与温度稳定性,是高压电路的核心被动元件之一。

二、关键电气性能参数

核心参数符合工业级高压MLCC标准,具体如下(测试条件:25℃、1kHz):

参数 规格值 补充说明 标称容值 4.7nF(472) 有效数字+幂次编码 容值精度 ±10%(K档) 满足多数高压电路容差需求 额定直流电压(VR) 2kV 直流场景下的安全工作电压 耐电压(Vr) 2.2kV 10秒耐压测试,确保可靠性 损耗角正切(tanδ) ≤2.5% 能量损耗低,适合高频滤波 绝缘电阻(IR) ≥10⁹Ω 1min施加额定电压测试 温度系数 X7R(-55℃~+125℃) 容值变化≤±15%

注:额定电压为直流值,交流场景需核算峰值电压(峰值≤2kV)。

三、温度特性与稳定性

X7R温度系数是该产品的核心优势:在-55℃至+125℃范围内,容值波动不超过±15%。相比NPO(温度稳定但高压容值极小),X7R可实现4.7nF的实用容值;相比Y5V(容值变化±20%),其温度稳定性更优,适合对容值波动敏感的高压电路(如电源滤波、信号耦合)。

四、封装与机械性能

1. 封装规格

  • 英制:1812;公制:4532(长×宽×高≈4.5mm×3.2mm×1.2mm);
  • 端子结构:镍栅(Ni)+ 纯锡镀层(Sn),符合RoHS 2.0、REACH环保标准,兼容无铅焊接。

2. 机械可靠性

  • 焊接温度:回流焊峰值≤260℃(符合JEDEC标准);
  • 抗弯强度:≥500MPa(避免PCB过度弯曲导致电容开裂);
  • 振动性能:通过MIL-STD-202G振动测试(10~2000Hz,10g加速度)。

五、典型应用场景

该产品因高压、小容值、温度稳定的特点,广泛用于:

  1. 开关电源(SMPS):AC-DC电源高压侧的滤波、EMI共模/差模滤波;
  2. 高压电源模块:医疗设备(MRI、高压发生器)、工业自动化电源的去耦电容;
  3. 电子镇流器:荧光灯、高压钠灯的启动与稳压电路;
  4. 电力电子设备:变频器、逆变器的高压耦合电容;
  5. 高压传感器:压力、温度传感器的信号调理电路。

六、选型与使用注意事项

  1. 电压降额:直流场景建议降额至额定电压的80%以下(≤1.6kV),避免长期老化;
  2. 温度限制:工作温度不得超过125℃,否则容值变化超差;
  3. 焊接规范:无铅回流焊需控制升温速率(≤3℃/s)、峰值时间(≤10s),防止开裂;
  4. 存储要求:常温干燥环境(湿度≤60%),开封后1个月内使用,避免受潮;
  5. 机械应力:PCB弯曲度≤0.5%,避免跌落、冲击损坏电容。

该产品凭借禾伸堂的高压MLCC技术积累,在可靠性、温度稳定性上表现突出,是高压电路设计的可靠选择。

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