行业组件数据 · 2026

定子片

Stator plates are stationary conductive plates in variable capacitors that adjust capacitance by changing overlap area with rotor plates.

技术定义与适配语境
典型 定子片 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。

Stator plates are fixed conductive elements in variable capacitors that form one set of electrodes in a parallel-plate capacitor configuration. They remain stationary while rotor plates rotate to vary the effective overlapping area, thereby changing capacitance. These plates are precisely manufactured to maintain consistent spacing and surface quality for stable electrical performance across the adjustment range.

组件规格

定义
Stator plates are fixed conductive elements in variable capacitors that form one set of electrodes in a parallel-plate capacitor configuration. They remain stationary while rotor plates rotate to vary the effective overlapping area, thereby changing capacitance. These plates are precisely manufactured to maintain consistent spacing and surface quality for stable electrical performance across the adjustment range.
工作原理
Stator plates work as stationary electrodes in a variable capacitor system. When rotor plates rotate relative to stator plates, the overlapping area changes, altering capacitance according to C = εA/d, where ε is permittivity, A is overlap area, and d is plate separation. This allows precise tuning of resonant circuits in RF applications.
材料
High-conductivity oxygen-free copper (C10100/C10200) or aluminum alloy (6061-T6) with silver or gold plating for corrosion resistance. Dielectric spacers typically use ceramic (alumina) or high-grade plastics (PTFE/PEEK).
Plate thickness
0.3-1.2 mm
Surface flatness
≤0.05 mm/m
Capacitance range
5-500 pF
Operating voltage
100-1000 VDC
Surface roughness
Ra ≤ 0.8 μm
Electrical conductivity
≥95% IACS (copper)
Temperature coefficient
≤50 ppm/°C
标准
IEC 60384-1MIL-C-14409DISO 286-2

行业分类与别名

定子片 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

Insufficient plating thickness->Corrosion and increased contact resistance->Specify minimum plating thickness (≥2μm gold or ≥5μm silver) and implement regular coating thickness verification
Improper material selection->Thermal expansion mismatch causing spacing variation->Use materials with matched thermal expansion coefficients and implement thermal cycling tests
Manufacturing debris between plates->Short circuits or inconsistent capacitance->Implement cleanroom assembly procedures and automated optical inspection

工业生态与工程逻辑

0
Dielectric breakdown at high voltages
1
Corrosion reducing conductivity
2
Mechanical deformation affecting spacing
3
Contact wear in sliding configurations
4
Thermal expansion mismatches

合规与检测

tolerance
Plate spacing tolerance ±0.02 mm, parallelism ≤0.01 mm, surface flatness ≤0.05 mm/m
test method
Capacitance measurement per IEC 60384-1, dielectric withstand test at 2x rated voltage, contact resistance measurement using 4-wire method

制造该组件的工厂

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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 difference between stator plates and rotor plates in variable capacitors?

Stator plates are fixed stationary plates, while rotor plates are mounted on a shaft and rotate to change overlap area with stator plates, thereby varying capacitance.

Why are stator plates typically made of copper or aluminum?

Copper and aluminum offer excellent electrical conductivity, good machinability, and reasonable cost. Copper provides better conductivity while aluminum offers lighter weight.

How do manufacturing tolerances affect stator plate performance?

Tight tolerances on plate flatness, parallelism, and spacing ensure consistent capacitance values, minimize parasitic effects, and provide smooth tuning characteristics across the adjustment range.

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