WMSIC Electronic Components

Walsin 1812B102K202CT

Model1812B102K202CT
Package1812
Brand(Walsin)
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 25+

Available for RFQ

Technical data

Product details

16 specifications

Core information

Product name
(Walsin) 1812B102K202CT
Type
WALSIN
Minimum package
1000

Technical parameters

Electronic Component
(WALSIN)
Electronic Component
1812B102K202CT
Electronic Component
1
Electronic Component
1nF
Package
1812
Electronic Component
SMD Capacitor(MLCC)
Electronic Component
±10%
Electronic Component
0.17g
Electronic Component
1
Electronic Component
BM0227653231
Electronic Component
X7R
Voltage
2kV
Electronic Component
1000

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

1812B102K202CT 片式陶瓷电容产品概述

一、产品基本属性汇总

1812B102K202CT是华新科(Walsin)推出的高压片式陶瓷电容,核心参数清晰对应工业级应用需求:

  • 容值:1000pF(标注“102”,即10×10²pF,换算为1nF);
  • 精度:±10%(标注“K”),满足常规工业场景的容值一致性要求;
  • 额定电压:2000V DC(标注“202”,即20×10²V),适配高压电路;
  • 温度系数:X7R(EIA标准:工作温度-55℃~+125℃,容量变化率≤±15%);
  • 封装:1812(英制尺寸:长180mil/4.5mm×宽120mil/3.2mm,公制对应4532);
  • 品牌:华新科(Walsin),全球知名被动元件制造商,专注MLCC技术30余年。

二、核心技术特性解析

1. 温度稳定与容量可靠性

X7R介质为铁电陶瓷材料,相比Y5V等高介电常数介质,容量随温度变化更平缓——在-55℃至+125℃范围内,容值漂移≤±15%,可避免中高温环境下电路性能波动(如滤波效果下降、耦合信号失真)。

2. 高压耐受能力

额定电压2kV DC是该产品的核心优势:针对低压电容无法覆盖的高压场景设计,采用高密度叠层工艺优化介质厚度,有效抑制高压下的介质击穿风险;同时漏电流控制在μA级以下(典型值≤1μA@2kV DC),满足高压电路的低损耗要求。

3. 片式封装适配性

1812封装兼顾“容量密度”与“PCB布局灵活性”:

  • 尺寸适中,可在高密度PCB上合理布局(比0805封装容值密度高,比2220封装更节省空间);
  • 兼容常规贴片工艺(回流焊、手工焊接),适配自动化生产流水线,降低组装成本;
  • 端电极采用无铅银钯合金,焊接兼容性好,避免冷焊、虚焊问题。

4. 损耗与频率特性

X7R介质的损耗角正切值(tanδ)典型值≤1%@1kHz,相比NPO介质损耗略高,但容量密度提升3~5倍;相比Y5V损耗降低60%以上,适合对损耗有一定要求的高压滤波、耦合电路。

三、典型应用场景

该产品因高压耐受与温度稳定性,主要覆盖以下领域:

  1. 工业电源系统:开关电源、逆变器的高压侧滤波(如AC-DC转换后的300V~1000V直流滤波);工业变频器的高压母线电容旁路,抑制电压尖峰;
  2. 医疗电子设备:X光机、高频电刀等高压医疗仪器的高压电路耦合/滤波(需稳定容量与高可靠性);
  3. 新能源领域:电动汽车车载充电系统(OBC)的高压DC滤波(适配-40℃~+85℃的车载环境);光伏逆变器的高压侧电容(户外温度波动场景);
  4. 通信基站设备:高压电源模块的滤波与耦合,支撑基站稳定运行(避免雷击浪涌影响)。

四、品牌与可靠性保障

华新科作为全球前十大被动元件厂商,1812B102K202CT具备以下可靠性优势:

  1. 工艺一致性:采用成熟的多层陶瓷叠层(MLCC)工艺,批量产品的容值、电压耐受一致性误差≤5%,降低批次差异风险;
  2. 环保与认证:符合RoHS 2.0、REACH等环保标准,无铅端电极设计;部分型号通过UL、VDE安全认证,满足高压应用的安全规范;
  3. 长期可靠性:经过125℃下1000小时老化测试,漏电流变化率≤10%,容值变化率≤±5%,适合长期运行的工业/医疗设备。

五、应用注意事项

  1. 焊接工艺:陶瓷电容易受高温冲击,回流焊峰值温度需控制在260℃以内(持续时间≤10s),避免多次焊接导致介质开裂;
  2. 电压降额:额定电压为DC值,AC应用需降额至80%以下(如2kV DC对应1.6kV AC),避免介质击穿;
  3. 机械应力:安装时避免过度弯折PCB,防止陶瓷电容因应力开裂(陶瓷材料脆性较高)。

该产品凭借“高压耐受+温度稳定+高可靠性”,成为工业、医疗、新能源等领域高压电路的优选被动元件。

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