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Texas Star dx500v capacitor C45...91pF
- Thread starter Lomchivok
- Start date
Pretty sure it's 500 Volts. The current rating is more important to the part used on the amplifier's output like C45. The metal mica has more metal in it, and a higher current rating than most ceramic disc or silver-mica caps with the same capacitance rating.
It's just not marked anywhere on the part.
One way around this is to put 3 or 4 or more disc or silver-mica capacitors in parallel. This splits the RF current three or four ways, and reduces risk of overheating.
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It's just not marked anywhere on the part.
One way around this is to put 3 or 4 or more disc or silver-mica capacitors in parallel. This splits the RF current three or four ways, and reduces risk of overheating.
73
Well, I pulled it out of the circuit. It's actually 100 pF not 91 but it tests at 225 pF. I did order from RF parts a few metal clad 91's and 100's but they're 350 volts...might not matter the voltage??
Voltages in that circuit won't exceed that, or even get close. It's the current rating that makes or breaks a capacitor in that particular spot. And that's what the metal mica cap is for, high current.
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