WMSIC Electronic Components

Walsin 1812B104K631CT

Model1812B104K631CT
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 26+

Available for RFQ

Technical data

Product details

18 specifications

Core information

Product name
(Walsin) 1812B104K631CT
Type
WALSIN
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
(WALSIN)
Electronic Component
1812B104K631CT
Electronic Component
1
Electronic Component
100nF
Package
1812
Electronic Component
SMD Capacitor(MLCC)
Electronic Component
±10%
Electronic Component
0.23g
Electronic Component
1
Electronic Component
BM0264349458
Electronic Component
X7R
Voltage
630V
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.

1812B104K631CT 片式陶瓷电容产品概述

一、产品基础信息与型号解析

1812B104K631CT是华新科(Walsin) 推出的多层片式陶瓷电容(MLCC),型号各段明确指向核心特性:

  • 1812:英制封装尺寸(0.18英寸×0.12英寸),对应公制约4.5mm×3.2mm;
  • B:产品系列标识(华新科常规高压片容系列代号);
  • 104:容值编码(10×10⁴ pF = 100nF);
  • K:容值精度(±10%,工业级通用精度);
  • 631:额定电压编码(63×10¹ V = 630V DC);
  • CT:封装/包装细节(如卷带包装适配自动贴装)。

该产品定位为高压中容值片式电容,适配高密度表面贴装设计,无需引线即可直接焊接于PCB。

二、核心电气性能参数

参数项 具体规格 关键说明 标称容值 100nF(104pF) 中容值范围,满足滤波、旁路等常规需求 容值精度 ±10%(K级) 无需超高精度的工业场景完全适用 额定电压 630V DC 直流工作电压上限,高压应用核心指标 温度系数 X7R 温度范围-55℃~+125℃,容值变化≤±15% 损耗角正切(DF) ≤1%(1kHz,25℃) 低损耗,减少电路发热与功率消耗 绝缘电阻 ≥10¹⁰ Ω(25℃,100V DC) 高绝缘性,保障电路长期稳定运行

三、封装与物理特性

1812封装是小型化表面贴装标准封装,关键物理特性如下:

  • 尺寸:4.5mm(长)×3.2mm(宽)×1.6mm(厚,典型值);
  • 端电极:镍基镀层+无铅锡表层,适配回流焊/波峰焊工艺;
  • 包装:标准卷带包装(3000pcs/卷),兼容自动贴片机(SMT);
  • 结构:多层陶瓷介质堆叠,无引线设计,抗机械振动性能优异。

小型化设计可有效节省PCB空间,适合消费电子、工业设备的高密度布局。

四、温度稳定性与可靠性

X7R温度系数是该产品的核心优势,直接决定其环境适应性:

  • 宽温范围:覆盖-55℃(低温)至+125℃(高温),满足工业、车载(部分场景)温度需求;
  • 容值可控:工作温度内,容值偏差不超过±15%,避免电路性能波动;
  • 可靠性保障:华新科采用成熟陶瓷烧结工艺,产品抗老化、抗湿度性能符合IEC 60384-2国际标准;
  • 高压稳定性:630V额定电压下长期工作无击穿风险(需遵循降额规范)。

五、典型应用场景

因高压、中容值、宽温特性,该电容广泛用于以下领域:

  1. 工业电源:开关电源的高压输出滤波、EMI抑制电容;
  2. LED驱动电源:大功率LED照明的高压驱动电路滤波;
  3. 电力电子设备:变频器、UPS电源的高压模块旁路电容;
  4. 通信基站:电源模块的高压噪声抑制与滤波;
  5. 家电控制板:电磁炉、空调变频模块的高压滤波电容。

六、品牌与质量保障

华新科(Walsin)是全球前五大被动元件制造商之一,1812B104K631CT具备:

  • 环保认证:符合RoHS 2.0、REACH法规,无铅无镉;
  • 安全认证:通过UL、VDE等国际安全认证,批量产品一致性好;
  • 产能稳定:拥有大规模MLCC生产线,可满足客户批量采购需求;
  • 技术支持:提供选型指导、应用方案等售后支持。

七、选型与使用注意事项

  1. 电压降额:直流工作电压建议不超过额定电压的80%(即504V以下),交流应用需确保峰值电压≤630V;
  2. 温度限制:避免工作温度超出-55℃~+125℃,高温场景需额外散热;
  3. 焊接工艺:遵循回流焊温度曲线(峰值230℃~250℃,时间≤10s),避免热冲击导致电容开裂;
  4. PCB布局:高压电容需远离低压电路,减少噪声耦合;
  5. 存储条件:常温干燥环境存储(温度-40℃~+85℃,湿度≤60%),避免受潮。

总结

1812B104K631CT凭借高压、宽温、小型化等优势,成为工业电源、LED驱动等领域的高性价比片式陶瓷电容选择,可有效平衡性能与成本。

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