Sorting through my boxes again... stumbled across this anonymous looking box, one of a few boxes full of old stuff that a long retired engineer friend gave me 3 years ago. Never had an opportunity to look in detail at all the stuff he gave me, life got in the way... now I do, as I am sorting through all my stuff bit by bit.
Box contains a big plastic container full of I am sure thousands of .. low power axial legged dipoles so to speak. Mostly 1/4W carbon resistors it looks. Some 1/8W. Some diodes, some caps as well, well I think they are caps, the light green bodied style. Or are they small inductors, can never remember...
Also in that box, a treasure... a brand "new" carton containing an assortment (9R up to 620k ) of 1% metal film resistors !
Bodies look same size as your regular 1/4W carbon jobbies, but markings say they are rated at 0.6W, so more than double !
Is that a typo or do metal film resistors handle heat so much better than carbon ?!
It says they are 50PPM , that's the tempco I guess. How good is that ? Good ? Average ? Bad ?
I can't see a brand name on it.. does someone recognize the "logo" / drawings on the box ?
It's old stuff so I doubt it's unbranded cheap Chinese stuff.. just was not a thing decades ago, compared to what it is today..
There is a part number on it though. It says : MF60PHF rings a bell ?
Anyway, would love to have some fun like Cerebus just did, but I don't have a fancy bench meter like he does !
Maybe one day when they get much cheaper...
Maybe if I get a cheaper / older one, that I could hook to GPIB and connect to a computer and with some S/W do something similar...