WMSIC Electronic Components

Walsin 1210B474K251CT

Model1210B474K251CT
Package1210
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) 1210B474K251CT
Type
WALSIN
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
(WALSIN)
Electronic Component
1210B474K251CT
Electronic Component
1
Electronic Component
470nF
Package
1210
Electronic Component
SMD Capacitor(MLCC)
Electronic Component
±10%
Electronic Component
0.033g
Electronic Component
1
Electronic Component
BM0257536635
Electronic Component
X7R
Voltage
250V
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.

华新科1210B474K251CT多层陶瓷电容器(MLCC)产品概述

华新科(Walsin)1210B474K251CT是一款表面贴装多层陶瓷电容器(SMD/SMT MLCC),专为中高压、宽温环境下的电子电路设计,具备容值稳定、体积紧凑、可靠性高的特点,广泛应用于电源、工业控制、通信等领域。

一、产品基本定位与封装特性

该型号属于华新科通用型MLCC产品线,采用1210英制贴片封装(对应公制尺寸3225,即长3.2mm×宽2.5mm),适配自动化贴装工艺,可有效节省PCB布局空间,适合高密度电路设计。作为多层陶瓷结构电容,其通过叠层陶瓷介质与内电极实现高容值集成,避免了电解电容的体积劣势与铝电解的寿命问题。

二、核心参数详细解析

1. 容值与精度

容值标称470nF(0.47μF),采用三位数字标识法(474):前两位为有效数字“47”,第三位为10的幂次“4”(即47×10⁴pF=470nF);精度等级为**±10%(K档)**,满足大多数通用电路对容值偏差的需求,无需额外高精度校准。

2. 额定电压与耐压

额定电压为250V直流(DC),是该型号的核心耐压指标。实际应用中建议降额使用(通常保持工作电压不超过额定值的70%-80%),以提升长期可靠性,避免电压击穿风险。若涉及交流电路,需确认交流有效值不超过对应直流额定值的70%(约175V)。

3. 温度系数与工作范围

温度系数遵循EIA X7R标准:

  • 下限工作温度:-55℃
  • 上限工作温度:+125℃
  • 容值变化率:±15%(相对于25℃基准) X7R的宽温特性使其可稳定适配工业、车载等温度波动较大的场景,容值变化小,无需频繁补偿。

4. 封装与尺寸

1210封装的关键尺寸(参考华新科 datasheet):

  • 长度:3.0±0.2mm
  • 宽度:2.5±0.2mm
  • 厚度:1.6±0.2mm(典型值) 焊盘间距适配标准1210贴片座,贴装兼容性强。

三、关键性能优势

  1. 温度稳定性优异:X7R系数确保宽温范围内容值偏差小,避免因温度变化导致电路性能波动(如滤波效果下降、耦合信号失真)。
  2. 中高压适配性:250V额定电压覆盖中等功率电源、工业控制母线等场景,无需串联多个低耐压电容,简化电路设计。
  3. 高频特性良好:MLCC的低等效串联电阻(ESR)与低等效串联电感(ESL)特性,适合高频电路的旁路、去耦应用,提升信号完整性。
  4. 可靠性高:陶瓷介质无电解液干涸、极化等问题,寿命远长于铝电解电容,适合长期运行的工业设备。

四、典型应用场景

1. 开关电源滤波

  • 输入滤波:抑制电网瞬态电压、EMI干扰;
  • 输出滤波:稳定直流电压纹波,提升电源效率;
  • 适配功率范围:100W-500W中等功率开关电源。

2. 工业控制电路

  • 变频器直流母线滤波:承受母线电压波动,稳定逆变输出;
  • PLC输入/输出模块:耦合数字信号,滤除噪声;
  • 适配环境:-40℃~+85℃工业级温度范围。

3. 通信设备

  • 基站射频模块:旁路高频噪声,提升信号信噪比;
  • 路由器/交换机电源:滤波稳压,保障数据传输稳定。

4. 消费电子高端应用

  • 大功率充电器:输入EMI滤波(满足安规要求);
  • 专业音频设备:耦合音频信号,减少温度漂移导致的失真。

五、选型与使用注意事项

  1. 电压降额:实际工作电压需低于250V,建议最大连续工作电压≤200V(80%降额),脉冲电压≤250V(单次);
  2. 温度限制:避免工作环境超出-55℃~+125℃,否则容值变化可能超过±15%,影响电路性能;
  3. 贴装工艺:回流焊温度需控制在220℃~240℃(峰值不超过250℃),避免过热导致陶瓷开裂;
  4. 极性注意:MLCC无极性,正反贴装不影响性能,但需确认焊盘尺寸与封装匹配,避免虚焊。

该型号凭借平衡的容值、耐压与温度特性,成为中高压通用电路的高性价比选择,华新科的稳定产能也保障了供应链可靠性。

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