How To Choose The Right Self-Healing Film Capacitor For Your Application?

Aug 18, 2026

What Is a Self-Healing Film Capacitor WMR?

WEET WMR Self-Healing Film Capacitor is a film capacitor that uses metallized film technology to improve reliability.

When a small dielectric breakdown occurs during operation, the damaged area can be isolated through the self-healing process, helping the capacitor maintain stable performance and extend service life.

Key Factors When Selecting a Self-Healing Film Capacitor WMR

Consider the Dielectric Material

The dielectric material plays an important role in capacitor performance.

Polypropylene film is commonly used because of its:

• Low dielectric loss

• Good electrical stability

• Excellent self-healing capability

Zinc-Aluminum Metallized Film Capacitor

A Zinc-Aluminum Metallized Film Capacitor uses zinc-aluminum metallized polypropylene film, providing good self-healing characteristics, compact size, and stable performance for various applications.

Select the Proper Voltage Rating

WEET WMR Series Rated Voltage is 400V (100V 250V 630V are Available on Request)

Choose the Correct Capacitance Value

The capacitance value should match the requirements of the circuit.

WEET WMR Series Capacitance Range: 0.1μF ~ 300μF

It affects:

• Filtering 

• Energy storage 

• Power conversion applications

Check Temperature Requirements

Temperature directly affects capacitor reliability and lifetime.

The WEET WMR Series supports an operating temperature range of -40°C to +85°C, making it suitable for different industrial and power applications.

Consider Size and Installation Space

For modern electronic designs, compact size is becoming increasingly important.

When selecting a film capacitor, consider:

• Compact structure 

• High capacitance density 

• Easy integration 

For more details about the structure and features of WMR Series, please read: WMR Series: Power Film Capacitor With Metallized Polypropylene Film

Why Choose WEET WMR Series?

The WEET WMR Series features Zinc-Aluminum Metallized Polypropylene Film technology and provides reliable self-healing performance.

Key advantages include:

• Good self-healing capability 

• Stable electrical performance 

• Compact design 

• Customized solutions 

The WEET WMR Series is a reliable choice for applications requiring durable and stable film capacitor performance.