WMSIC Electronic Components

PSA FV31X223K102EEG

ModelFV31X223K102EEG
Package1206
BrandPSA
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
PSA FV31X223K102EEG
Type
PSA
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
PSA
Electronic Component
FV31X223K102EEG
Electronic Component
1
Electronic Component
22nF
Package
1206
Electronic Component
SMD Capacitor(MLCC)
Electronic Component
±10%
Electronic Component
0.053g
Electronic Component
1
Electronic Component
BM0257411982
Electronic Component
X7R
Voltage
1kV
Electronic Component
Electronic Component
Electronic Component
2000

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

FV31X223K102EEG 产品概述

一、产品简介

FV31X223K102EEG 为 PSA(信昌电陶)系列的一款高压多层陶瓷贴片电容(MLCC),标称容量 22 nF(223),容差 ±10%(K),额定直流电压 1 kV,温度特性等级 X7R,常见封装 1206(公制约 3.2 mm × 1.6 mm)。该器件为面向中高压应用设计,在体积、耐压与成本之间取得平衡,适合需要耐压性与中等介电稳定性的多种电路场景。

二、主要电气参数

  • 容值:22 nF(22,000 pF)
  • 容差:±10%(K)
  • 额定电压:1 kV DC
  • 温度系数:X7R(-55°C 至 +125°C,典型温度变化范围内容量变化可达几十百分比,详见厂方温度曲线)
  • 封装:1206(3.2 × 1.6 mm)
  • 结构:多层陶瓷贴片(MLCC)
  • 表面工艺:适合回流焊装配(详见厂方回流温度曲线与焊接工艺说明)
  • 引脚/端电极:常见为Ni/Sn或Cu/Sn电镀端电极(以厂方具体版本为准)

三、关键特性与性能说明

  • 高耐压:1 kV 额定电压使其可直接用于高压耦合、隔离、脉冲回路及高压滤波场景。
  • 温度稳定性:X7R 属于“类介质稳定”材料,相较于 C0G/NP0 容量随温度有可观变化(X7R 在温区内容量允许变化较大),但在体积/容量比上优势明显,适合容值要求较高且对温漂容忍的场合。
  • DC 偏压影响:由于为 II 类介质(X7R),在较高直流偏压下会出现显著的容量下降。尤其在接近额定电压或脉冲高压条件下,实际有效电容可能明显小于标称值;推荐在设计时参考 PSA 提供的 DC bias 曲线并留有裕量。
  • ESR / ESL:1206 尺寸在频率响应上比更小封装的 ESL 与 ESR 更优,但在射频或高速数字去耦场景仍有寄生影响。请根据电路频率特性选择或并联低 ESL 电容优化响应。
  • 机械与热应力:MLCC 对机械应力与温度循环敏感,过大的焊接热梯度或 PCB 弯曲可能导致裂纹或失效。

四、设计与布局注意事项

  • 去耦与滤波:在去耦场合可与低 ESR 的陶瓷电容并联,改善高频响应并抑制 DC 偏压影响。
  • PCB 焊盘设计:建议采用较宽的焊盘和适当的焊膏量,避免单侧过多焊膏导致应力集中;保留元件端部周围的焊盘缓冲,避免靠板边或孔位布置导致应力集中。
  • 机械应力缓解:避免在元件两端施加过大压强;对可能出现板弯的区域采用胶固定或特殊支撑;若存在重复热循环或振动环境,建议做样件可靠性评估。
  • 电压裕量与退化考虑:针对 X7R 的 DC 偏压与温漂特性,实际设计中常采用电压降额(derating)策略或并联多个器件分担电压/容量需求。
  • 焊接工艺:遵循厂方回流曲线(通常最高峰值温度≤260°C,具体以产品数据手册为准),避免超温或二次回流造成老化或裂纹。

五、使用环境与可靠性

  • 温度范围:-55°C ~ +125°C(X7R 规定范围),在极端温度下容量会有可观漂移。
  • 湿热与老化:长时间高温高湿环境可能导致电容参数漂移,建议评估加速老化与湿热试验。
  • 失效模式:常见为裂纹(机械)、容量衰减(老化、DC 偏压)或端电极剥离(焊接工艺不当)。
  • 可靠性建议:关键应用应做样机测试,包括热循环、湿热、振动与 DC 偏压寿命试验;必要时选择具备更高可靠性认证的同系列器件。

六、典型应用场景

  • 高压耦合/隔离电路(HV 耦合电容)
  • 脉冲能量回路与抑制回路(限于脉冲幅度与频率在器件允许范围内)
  • 高压滤波与消除噪声(开关电源高压侧滤波)
  • 仪器仪表、医疗设备高压偏置网络、工业测控等需要较高耐压与中等电容的场合

七、选型与替代方案

  • 若需更好温度稳定性与极低损耗,可考虑 C0G/NP0,但同等体积下难以达到 22 nF;可能需并联或选用更大封装。
  • 若关注 DC 偏压下容量保持,建议与 PSA 索取 DC bias 曲线或考虑更厚介质/专用高压 MLCC 方案,或使用高压薄膜电容作为替代(薄膜在高压下容量稳定性更好,但体积更大)。
  • 对于高频去耦,建议并联小容值、高频低 ESL 电容以改善频率响应。

八、封装与采购建议

  • 封装 1206 适合自动贴装与回流焊流片式生产,常见包装为卷带(tape & reel)。
  • 采购时确认批次的 DC bias / 温度曲线、焊接等级、端电极材料与储存/干燥条件(有无需烘烤的干燥箱要求)。
  • 关键系统建议先申请样品并在目标电路与工艺下做合格性验证,再进行量产采购。

结语:FV31X223K102EEG 在 1 kV 等级的 MLCC 里以较小封装提供较高电容,是高压滤波与耦合的常用选择。设计时需重点关注 X7R 的温漂与 DC 偏压特性、PCB 工艺与机械应力控制,并参考厂商提供的详细曲线与工艺规范以确保可靠性。

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