Aerovox transmitting mica capacitor

Mica capacitors were invented in 1909 by William Dubilier. He’s the Dubilier in Cornell-Dubilier. Here’s a late 30’s/early-40’s Aerovox .0011 mfd 5000 volt transmitting mica cap. Transmitting mica are different than regular mica caps because they can pass significant RF current. This one is rated for 5 amperes at 1000 KCS (That’s 1 mHz for all you young folks). As transmitting micas go this one is not particularly big – 75mm wide and 52mm tall. Look closely and you can see Aerovox’s beautiful art deco logo

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