Which Capacitor Range Should I Choose for My Motor: 88-108 MDF or 108-130 MDF?

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SUMMARY

The discussion centers on selecting the appropriate motor-start capacitor for a motor requiring a 108 MDF rating. The options presented are the 88-108 MDF and the 108-130 MDF capacitors. The consensus indicates that the 108-130 MDF capacitor is the better choice due to its compatibility with the motor's specifications, as it aligns more closely with the required 108 MDF rating. Additionally, capacitors from Digikey, specifically those made by Cornell Dublier, are noted for their higher quality and a tolerance of +/- 25%.

PREREQUISITES
  • Understanding of motor-start capacitors and their specifications
  • Familiarity with capacitor tolerance and its implications
  • Knowledge of the differences between capacitor ranges
  • Basic electrical engineering principles related to motor operation
NEXT STEPS
  • Research the specifications and applications of 108-130 MDF capacitors
  • Explore the differences between various capacitor manufacturers, focusing on Cornell Dublier
  • Learn about the impact of capacitor tolerance on motor performance
  • Investigate the selection criteria for motor-start capacitors in different applications
USEFUL FOR

Electrical engineers, motor technicians, and anyone involved in selecting or replacing motor-start capacitors for optimal performance.

vincemash
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I have a motor that requires a 108 MDF - 110v start capacitor, I found them online at the following site:

http://www.phoenixphaseconverters.com/category.php?id_category=31

The question I have is should I be buying the 88-108 MDF or the 108-130 MDF capacitor.

What do the ranges mean? the motor specs out only 108 MDF

Thanks !

Vince
 
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These 108 uF motor-start capacitors from www.digikey.com made by Cornell Dublier are a lot more expensive than the ones you are looking at.

http://search.digikey.com/scripts/DkSearch/dksus.dll?Cat=131081&k=capacitor%20motor%20start

Their tolerance is +/- 25%.

Bob S
 

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