DC-Link Box-Type Metallized Film DC Capacitors
The film capacitors we commonly use are generally not very large in size. However, there are exceptions, such as the DC-Link box-type metallized film DC capacitor, which is significantly larger in size and differs greatly in appearance from standard film capacitors.
For example, the image below shows a UF Capacitors DC-Link 60μF 800V capacitor:

Advantages
- Larger size – Due to the increased material usage, it is naturally more expensive.
- Four terminals – Standard film capacitors typically have only two terminals.
- High capacitance range – Usually between 1.0μF ~ 140μF.
- High rated voltage – Common ratings include 500VDC, 600VDC, 800VDC, 900VDC, 1000VDC, and 1200VDC.
- Constructed with high-temperature-resistant metallized polypropylene film – Operating temperature range: -40℃ to +105℃.
- Plastic case encapsulation – Offers superior self-healing properties, high insulation resistance, excellent stability, and long lifespan compared to other film capacitors.
What is the function of DC-Link box-type metallized film DC capacitors?
These specialized DC-Link capacitors are primarily used in high-performance DC filtering applications, such as:
- Frequency inverters
- Industrial & high-end power supplies
- Solar inverters
Due to their specialized applications, large size, and high cost, only a limited number of manufacturers are capable of producing these high-capacity film capacitors.
UF Capacitors produces high-quality DC-Link capacitors and also offers customized sizes to meet specific customer requirements.
UF Capacitors DC-Link Cross Reference
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UF Capacitors
Series Code
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ESPCOS/TDK
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KEMET
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VISHAY
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Panasonic
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Cornell Dubilier
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THK, TDA series
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B32778P Series
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C4AK Series
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MKP1848C Series
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EZPV Series
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BLH Series
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More capacitors kindly access our website: www.ufcapacitors
Or send inquiry to our sales: carey@ufcapacitors.com