Unidentified Electronic Objects - Page 1
Forum section: electronics / repair

author: Ero-Shan
author_rank: Frequent Contributor
timestamp: May 22, 2020, 09:29:48 am
content: Don't you just hate it when you find components which don't seem to even exist? Despite searching with all your might, just plain nothing turns up?Here's two parts that I've found in the pile of stuff I've hauled in last week. One is a Burr-Brown '18802' in a 10-lead TO 5, the other is a 'MP5505CJ' (date code 8038) with 8 leads and no further hint at a manufacturer.The latter was found among some OP05's; with the part number containing an '05', I'm tempted to believe it is one, too.Sorry for the poor image quality, but my camera ain't no good at closeups.Does anyone have an idea as to the whatabouts of these buggers?

author: Electro Detective
author_rank: Super Contributor
timestamp: May 22, 2020, 09:39:43 am
content: I'm no help here except to say they look like 1970s thingies from an oscilloscope perhaps ?

author: DaJMasta
author_rank: Super Contributor
timestamp: May 22, 2020, 07:28:26 pm
content: From the package and the manufacturer, I'd expect them to be opamps, but I don't have a datasheet or part number for you. 8822 could certainly be a date code, but there's some chance it has to do with a part number as well - no hits in my brief searches.

author: duak
author_rank: Super Contributor
timestamp: May 22, 2020, 09:00:33 pm
content: Looking at my small collection of metal can parts, I see that National printed the information on the sides only. Burr-Brown and PMI printed on the sides and tops. TI and Motorola printed on the tops only.Burr-Brown made some analog functional blocks in TO-99 & TO-100 packages that could be interesting. Here's a link to the 1989 data book:https://www.rsp-italy.it/Electronics/Databooks/Burr%20Brown/_contents/Burr-Brown%20Integrated%20Circuits%20Data%20Book%20-%201989.pdf

author: BreakingOhmsLaw
author_rank: Frequent Contributor
timestamp: May 22, 2020, 09:23:05 pm
content: <yoda> search for old data books you must </yoda>https://archive.org/search.php?query=Burr+brown&sin=

author: telectric
author_rank: Contributor
timestamp: May 22, 2020, 11:54:33 pm
content: Generally BB has two or three alpha characters as a prefix so are there any prefix alpha characters before the "5505C" on the side?

author: Mechatrommer
author_rank: Super Contributor
timestamp: May 23, 2020, 12:08:57 am
content: googling "MP5505CJ to-5 datasheet" lead to an obsolete part list...https://www.scribd.com/doc/226095046/Catalog-Componente-Depasite-obsolete, there are few 5505 hits, and it is hinted MP5505=OP05 from MPS, the one that is spot on is MP5505CJ made by MICRO POWER in TO99 package date code DC81, a direct 5505 datasheet search in google is N/A so i guess the best bet is on the OP05 datasheet (TO99 pin compatible)https://pdf1.alldatasheet.com/datasheet-pdf/view/48997/AD/OP-05.htmlnot much luck on 8822 or 18022 though, the closest in the list is NJ8822 from Plessey but thats a DIP16 package, you may contact them if they still exist they may still have the fruit you want... there are more "image forms" from "MP5505CJ to-5 datasheet" search you may turn on your image recognition capability and work harder, mine is about to need recharging this very few minutes from now... good luck.

author: Ero-Shan
author_rank: Frequent Contributor
timestamp: May 23, 2020, 02:40:18 pm
content: Quote from: Mechatrommer on May 23, 2020, 12:08:57 amWell, Idohave the 1989 Burr Brown integrated circuits databook, but there's no mention of a 18802. With some wild interpretation from clues around the parts bin it came from, this might actually be a VFC32.I have several properly labeled OP05. And no use for neither an OP05 or a VFC32. But I like to sort them into the right component drawer.Thank you very much to all for your efforts!Ero-Shan

author: edpalmer42
author_rank: Super Contributor
timestamp: May 23, 2020, 06:54:26 pm
content: I have a circuit with similarly labelled Burr Brown cans. The 18802 appears to be something like an internal lot number which can't be cross-referenced to anything. In my circuit, the part number is on the side of the can.

author: fzabkar
author_rank: Super Contributor
timestamp: May 23, 2020, 08:47:10 pm
content: Micro Power Systems did have an MPOP05 part which "replaces OP-05". It seems strange that they would also have an MP5505CJ to replace the same part.https://www.datasheetarchive.com/pdf/download.php?id=1c816be56f8423a22b266d5cfe7a90bc04510e&type=O&term=mpop05BTW, my favourite resource for old datasheets ishttp://www.bitsavers.org/components/.

author: Neomys Sapiens
author_rank: Super Contributor
timestamp: May 24, 2020, 01:28:01 am
content: Quote from: Ero-Shan on May 22, 2020, 09:29:48 amHa! Mine are labeled 4203K and 8038/8041/8044 (also BB, also TO-100) and no, it's not a 8038 function generator. And the 4203K must be the ID, as I pilfered them from one compartment in a well kept storage. I have not been able to fix what they are.Another story is the audio chip named SSM2240. When I last searched the net for it, I found two types of statements:1.) that it is used in this or that synthesizer.2.) that no IC of this designation exists.And yet, it it sitting in my magazine. But no datasheet or proof of whatever kind.aahh!

author: exe
author_rank: Unknown
timestamp: May 24, 2020, 10:10:46 pm
content: Crack it open! Or, better, send it to Noopy.