Hi Folks,

Having dug out an old collection of parts I came across a bag of filter capacitors (pictured). Sorting shows most of them are 70s vintage Suflex polystyrene, but there is an abundance of a type that I can’t identify. They have a four character identification different on each size, for example the 22n/63v reads KD KS (pictured, length 1/2”) Does anyone know these?

 

The "KS" was used as a designation on Philips polystyrene caps. I understood it to be a product series but I am not certain of that.I think the "KD: might mean non-magnetic.

 

Excellent, thanks!