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Why Advanced Ceramics?
Wear Resistance
Excellent Electrical Insulation
Harder. Longer Lasting.
Safe Under High Voltage.
Ceramic materials offer exceptional hardness and wear resistance, making them ideal for rotating and sliding components operating under continuous friction. Alumina ceramics provide excellent dielectric strength and insulation performance, helping protect electrical systems in high-voltage environments.
Applications Pump shafts Applications EV charging systems
Bearings Electronic water pumps
Wear-resistant components Motor insulation parts
Thermal Management
Corrosion & Chemical Resistance
Dissipate Heat Efficiently.
Stable in Harsh Environments.
Compared with conventional insulating materials, alumina ceramics combine electrical insulation with high thermal conductivity, enabling efficient heat transfer. Ceramics are chemically inert and highly resistant to corrosion, moisture, detergents and most chemicals.
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Charging connectors Automotive cooling systems
From ceramic shafts and thermal substrates to charging connector components, advanced ceramics help engineers achieve higher reliability, better efficiency and longer product life.
Company Introduction
About Us
1.Engineered Ceramic Solutions for Demanding Applications
2.We specialize in custom alumina and zirconia ceramic components for automotive, energy and appliance industries.
3.With years of manufacturing experience and an IATF 16949 certified quality system, we support customers from design optimization and prototyping to mass production.
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We combine advanced ceramic processing technologies with precision machining capabilities to deliver high-performance ceramic components for demanding applications.
       

       

 

Structural design— Ceramic Forming-Sintering— Precision CNC Machining—Surface Finishing—Assembly Support—Performance Testing/Quality Control
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Alumina (Al₂O₃) Zirconia (ZrO₂)
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]]> Ceramic Capacitor for Microwave Oven Magnetron | Feedthrough EMI Filter https://www.zqatech.com/ceramic-capacitor-for-microwave-oven/ Wed, 09 Apr 2025 08:48:34 +0000 https://zhengqiang.zhong-shan.com/?p=1936 Ceramic Capacitor for Microwave Oven Magnetron | Feedthrough EMI Filter 查看全文 »

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Microwave Magnetron Filter Component

10kV Feedthrough EMI Filter for Microwave Oven Magnetrons

Our ceramic capacitor for microwave oven magnetron applications is a
10kV feedthrough EMI filter designed for high-frequency filtering,
electromagnetic interference suppression and stable integration into
standard and variable-frequency magnetron assemblies.

10.0kV Rated Voltage
380–530pF × 2
High-Frequency Filtering
UL94V-0 Equivalent
ODM Support

Send Your Drawing or Sample


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Typical Applications

  • General microwave oven magnetron
  • Variable-frequency microwave oven magnetron
  • Feedthrough EMI filtering
  • High-frequency magnetron electrical assemblies

Final dimensions and electrical requirements should be confirmed according
to the target magnetron design, drawing or approved sample.

Product Overview

What Is a Magnetron Ceramic Feedthrough Capacitor?

A ceramic capacitor for microwave oven magnetron applications
is a feedthrough filtering component installed in the magnetron electrical assembly.

It allows the required electrical connection to pass through the assembly while
helping filter unwanted high-frequency noise and suppress electromagnetic interference.

In a typical microwave magnetron system, the functional relationship can be understood as:

01

Feed-Through Capacitor

Provides the electrical feedthrough path required by the magnetron assembly.

02

Filter Component

Supports high-frequency filtering and suppression of unwanted interference.

03

Magnetron

Integrates into standard or variable-frequency microwave oven magnetron systems.

Technical Specifications

Standard Type vs Variable-Frequency Type

The following specifications are based on Zhengqiang’s current product catalogue.
Final requirements should be confirmed against the target magnetron specification.

Characteristic Standard Type Variable-Frequency Type
Rated Voltage (Edc) 10.0kV 10.0kV
AC Withstand Voltage (Erms) 10.0kV [50Hz, 1min] 10.0kV [20–30kHz, 1min]
Insulation Resistance 10000MΩ min. 10000MΩ min.
Nominal Capacitance 380–530pF × 2 [1V, 1kHz] 380–530pF × 2 [1V, 1kHz]
tanδ (Loss Tangent) 1% max. 1% max.
Temperature Characteristics E (-55~+22%) E (-55~+22%)
Temperature Range -30~+120 °C -30~+120 °C

Electrical values, dimensions and assembly requirements should be verified
according to the customer’s magnetron design, technical specification or approved sample.

Characteristics

Key Characteristics of the Magnetron Ceramic Capacitor

Wide-Band Interference Suppression

Helps prevent leakage of unused radiation in wide frequency bands and
supports electromagnetic interference control in the magnetron assembly.

Excellent High-Frequency Characteristics

Designed for high-frequency filtering and decoupling in microwave oven
magnetron electrical circuits.

UL94V-0 Equivalent Flame Retardancy

Zhengqiang’s current product catalogue specifies a flame-retardant rating
equivalent to UL94V-0.

Wide Application Temperature Range

Suitable for application environments within the specified
-30 to +120 °C temperature range.

Applications

General and Variable-Frequency Microwave Magnetrons

General Microwave Magnetron

The standard type is designed for conventional microwave oven magnetron
electrical assemblies requiring feedthrough filtering and interference suppression.

Typical AC withstand condition:
10.0kV [50Hz, 1min].

Variable-Frequency Microwave Magnetron

The variable-frequency type is intended for inverter or variable-frequency
microwave magnetron designs.

Typical AC withstand condition:
10.0kV [20–30kHz, 1min].

Electrical Function

Why EMI Filtering Matters in a Microwave Magnetron

Microwave magnetrons operate in a high-frequency electrical environment.
The feedthrough capacitor helps transmit the required electrical connection
while filtering unwanted high-frequency noise.

This makes the microwave magnetron capacitor part of the
magnetron’s electromagnetic interference control system rather than simply
a conventional ceramic capacitor.

For replacement or custom development, the capacitor should therefore be
evaluated together with the magnetron electrical design, installation geometry
and operating conditions.

For B2B sourcing, the ceramic capacitor for microwave oven
should be evaluated together with the magnetron type, rated voltage,
capacitance, mounting dimensions and operating conditions.

Engineering Review

What Information Should You Provide for a Custom Project?

To evaluate a custom or replacement
feedthrough capacitor for magnetron applications,
provide as much of the following information as possible.

Existing sample or reference model
2D drawing or dimensional specification
Standard or variable-frequency magnetron
Rated voltage and withstand requirements
Capacitance requirements
Estimated order quantity

ODM Workflow

From Sample Review to Stable Production

01

Requirement Review

Review sample, drawing, magnetron type and key electrical requirements.

02

Engineering Confirmation

Confirm critical dimensions, application conditions and product specifications.

03

Sample Evaluation

Evaluate the developed component against the target magnetron assembly.

04

Mass Production

Move to stable production after specification and sample approval.

Selection Guide

What Should Be Confirmed Before Ordering?

A magnetron feedthrough capacitor should not be selected only by external
appearance or physical dimensions.

  • Confirm whether the magnetron is standard or variable-frequency type.
  • Verify rated voltage and AC withstand requirements.
  • Confirm nominal capacitance and circuit requirements.
  • Check mounting dimensions and electrical interfaces.
  • Confirm the required application temperature range.
  • Use an approved sample or drawing for replacement projects.
FAQ

Frequently Asked Questions

What does a ceramic feedthrough capacitor do in a microwave magnetron?

It provides the required electrical feedthrough path while helping filter
unwanted high-frequency noise and suppress electromagnetic interference
in the magnetron electrical assembly.

What is the rated voltage of this magnetron ceramic capacitor?

The current standard and variable-frequency product specifications both
list a rated voltage of 10.0kV.

What capacitance range is available?

The current catalogue specification lists nominal capacitance of
380–530pF × 2 measured at 1V, 1kHz.

Can this product be used in variable-frequency microwave ovens?

Yes. Zhengqiang’s current product range includes both standard and
variable-frequency magnetron capacitor types.

Can Zhengqiang develop a replacement from an existing sample?

An existing sample, together with dimensional and electrical requirements,
can be used as part of the engineering evaluation for a custom ODM project.

What information should I send for engineering review?

Send the sample or drawing, magnetron type, critical dimensions,
electrical specifications, application conditions and estimated quantity.

Zhengqiang Ceramics

Custom Ceramic Components for Appliance Applications

Zhengqiang supports drawing-based ODM development of ceramic components for
microwave ovens, electrical assemblies and other appliance applications.

For a new microwave magnetron capacitor project or an alternative to an
existing component, send your sample, drawing and technical requirements
for engineering review.


Explore More Ceramic Components →

Start Your Project

Need a 10kV Ceramic Capacitor for Your Microwave Magnetron?

Send your drawing, existing sample or technical requirements for engineering review.


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