The P090 series of potentiometers from TT Electronics has a marking code on the side that begins with ‘P’ and sometimes, but not always, contains the ‘090’ marking as well. Why the variability? What is the expected marking for these products?
The marking for these products is not a part number or identification marking. It’s a Date/Lot code and will vary by product batch. This is expected and normal; the ‘P090’ marking is not expected on these products, nor are they marked to indicate model number or resistance.