行业组件数据 · 2026

主电容器

Primary capacitors are essential energy storage components in power supply units, responsible for filtering, smoothing, and stabilizing electrical currents.

技术定义与适配语境
典型 主电容器 会按材料、尺寸公差、适配关系和失效风险在 电气设备制造 中评估。

Primary capacitors are high-capacitance electronic components used in the input stage of power supply units to store electrical energy, reduce voltage ripple, and provide stable DC output by filtering AC components. They handle high voltage and current levels, ensuring efficient power conversion and protection against electrical noise.

组件规格

定义
Primary capacitors are high-capacitance electronic components used in the input stage of power supply units to store electrical energy, reduce voltage ripple, and provide stable DC output by filtering AC components. They handle high voltage and current levels, ensuring efficient power conversion and protection against electrical noise.
工作原理
Primary capacitors operate by storing electrical charge in an electric field between two conductive plates separated by a dielectric material. In power supply units, they charge during peak voltage cycles and discharge during low cycles, smoothing out fluctuations to maintain consistent voltage output.
材料
Aluminum electrolytic (common)film (polypropylene/polyester)ceramic (for high-frequency applications)with electrolytes (for electrolytic types) and metal electrodes.
ESR
Low (e.g., <0.1Ω)
Lifetime
2000 to 10000 hours
Capacitance
100uF to 10000uF
Voltage Rating
200V to 600V
Temperature Range
-40°C to 105°C
标准
ISO 9001IEC 60384DIN EN 60384

行业分类与别名

主电容器 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

High ripple current->Capacitor overheating and premature failure->Use capacitors with higher ripple current ratings and implement thermal management.
Voltage exceeding rating->Dielectric breakdown and short circuit->Select capacitors with voltage ratings above maximum operating voltage and use overvoltage protection circuits.

工业生态与工程逻辑

0
Overheating due to high current
1
Electrolyte leakage
2
Voltage spikes causing failure
3
Reduced lifespan from excessive ripple current

合规与检测

tolerance
±20% for capacitance, ±10% for voltage
test method
IEC 60384 standards for capacitance, ESR, leakage current, and endurance testing

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the main function of a primary capacitor in a power supply unit?

The primary capacitor filters and smooths the input AC voltage, reducing ripple and providing stable DC output to protect downstream components.

How do I select the right primary capacitor for my application?

Consider voltage rating, capacitance, temperature range, and ESR based on the power supply's load requirements and environmental conditions.

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CNFX 是开放目录,不是交易平台或采购代理。工厂资料和表单用于帮助你准备直接沟通。

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数据基础

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初步技术归类
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