F5152-1 info

[nonsuchpro]

Hello all.
New to the forum. Been watching the videos for about a year now. Great stuff!!

I've acquired a component that I can't find any info for. It's has 6 pins and is labeled F5152-1 on all of them, all the other numbers change. Anybody have any idea what it is? I'm thinking an op-amp or some kind of darlington but have no clue.

Thanks in advance!
Rob

[philpem]

The "F" looks like a manufacturer's logo. Fuji Electric or Fairchild perhaps? Have a look at a semiconductor manufacturers' logo website and see if you can match it up.

http://www.elnec.com/support/ic-logos/?method=logo might be worth a try, or http://www.siliconinvestigations.com/logos/logos.htm or http://www.classiccmp.org/rtellason/logos/semiconductorlogos.html .

That leaves 5152-1 as the part number.

Given the 3:3 pinning, my bet is that they're dual matched transistors, possibly JFETs. If you've got a semiconductor analyser (Peak Atlas DCA or similar), you could try connecting the sets of three pins in turn (first the set on one side, then the other). If they're FETs, they should read similarly.

"225" and "227" (read on a few of the parts) is probably a date code, but I can't remember how to decode the old 3-digit codes. It's either YWW or WWY (year-week or week-year) and the year is the last digit of the year. Realistically, YWW is most likely, and I'm guessing 1980s, which would put them at the 25th and 27th week of 1982. That's just a guess though!

[SeanB]

Logo is Precision Monolithics, now Analog Devices.

Can't find the 5152, probably well obsolete now, but try to look here for datasheets for similar devices.

http://www.analog.com/en/special-linear-functions/matched-transistors/products/index.html

[T3sl4co1l]

What was Ferranti's logo..?

Agree, looks like a dual transistor; if nothing else, you can ohm it and see.  Likely candidates: NPN, PNP, N-JFET.

Tim

[SeanB]

I have some 2N2223 transistors in the same package. the pinout should be the same, so you can just use this to check them as individual transistors.

[nonsuchpro]

Thanks for the replies, much appreciated!