Just got new Sprague Orange Drop caps for the board on my ST70, Sprague 716P series from Antique Elec. Supply...four .1mfd 600 v and two .047 400v. There is no visible polarity stamped on these, I thought for certain there would be a "+" or "-" or some indication which lead is which, but nothing! Or, is there no difference in what direction I put them in? The old Pyramid Imps seem to have a stripe on one end that might indicate polarity....stupid question, but what the heck? I thought these had to be in the correct plus-minus configuration when installed. Any help appreciated. Thx. IA.
3 posters
New PC board caps...polarity?
wildiowa- Posts : 237
Join date : 2012-03-19
Roy Mottram- Admin
- Posts : 1838
Join date : 2008-11-30
only electrolytic caps are polarized, the 716P are not and can go either way
wildiowa- Posts : 237
Join date : 2012-03-19
Yay! There is a God! Looking forward to installing new stuff tonight...also got the quad cap and bias caps from Dynakitparts....will be eager to fire the new rig up. Thanks.
IA
IA
anbitet66- Posts : 143
Join date : 2009-12-23
Location : Valley Stream, NY
There is no polarity on an orange drop. But if there is a line on the body near one of the wires that would be the connection to the outer foil. That would be important if the capacitor is connected to ground (as in a bypass application) to minimize hum pick up. If the capacitor is used for coupling, then it doesn't matter which way you connect it.