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Consider the resistance of a capacitor is a big deal for a part used in this spot. Physically-large capacitors are better. More metal in the bigger cap means lower resistance, means less likely to burn up from high RF current.

If the circuit calls for 150 pf (for example) using three 50pf caps in parallel will split the current three ways, and reduce the heating of each cap.

Let your finger be your guide, if you don't have a fancy IR thermometer. A cap that gets too hot to touch will have a short service life.

73

[QUOTE="nomadradio, post: 755579, member: 22"] Consider the resistance of a capacitor is a big deal for a part used in this spot. Physically-large capacitors are better. More metal in the bigger cap means lower resistance, means less likely to burn up from high RF current. If the circuit calls for 150 pf (for example) using three 50pf caps in parallel will split the current three ways, and reduce the heating of each cap. Let your finger be your guide, if you don't have a fancy IR thermometer. A cap that gets too hot to touch will have a short service life. 73 [/QUOTE]

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