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Polyester capacitors
Polyester capacitors use a polyester dielectric and they are ideally suited to decoupling or bypass applicationsNote: Connect a polyester 100nF capacitor close to each power supply/ground of each IC to reduce noise and improve circuit operation.
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Tolerance
They are not suited to high precision as their tolerance is not too good ranging from ±10%, to ±20% depending on the type.They come in many different shapes and sizes but one of the most common types is the orange drop:
Typical polyester Temperature Curve
The capacitor value will also change with temperature. Here's a typical graph of the change of capacitance with temperature:
[ceram]Get some bargain polyesters from Ebay
Here's a selection of polyester caps that you can buy on Ebay
Just click on the capacitor you want and start bidding.
Jump from polyester capacitors page to
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