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I have about 100 of these I picked up from a grab bag. I cannot find the datasheet for the life of me. As close as I've come is the MOC8205 as someone on ebay selling them, the SOC, gave a datasheet for the MOC8205.
Unknown Optocoupler
Aug 25, 2009
5 Replies
"Kodfk Dleepd"
** Motorola would typically drop the "M" from a regular part number and replace it with an "S" whenever the part was a special type made for or selected from a batch to meet a customer's specs.The following sequence of digits were a code used by the customer and Motorola to identify the special part's specs.
For example: " SJE1234" or " SJ123 ".
Your " SOC873 " made in July of 1994 (that is what 9430 means ) fits the pattern exactly.
Motorola have never been known to reveal the actual device number or the special specs.
.... Phil
[surface mount six-pin package, Motorola 1994 datecode and part number SOC 873]
So, what's the problem? It's an optocoupler (that's the 'OC' part of the part number), probably pin 1 and 2 are an IR photoemitter. Either phototransistor or photodarlington output is likely, a little work (feed 5 mA to the input, look at current output) will tell you what the current transfer ratio is.
Motorola's "S" numbers are customer-specials, so there might be frequency or sensitivity or safety 'special' specifications that the factory tested for, but the generic parts of this style are/were mass-produced. Somewhere, a line producing (for instance) 4N35 just got a short change of outgoing-test program and the results got the SOC 873 label.
So, you just have to test it, to find out what specs it fits.
Since you have several, a tear-down (either hot sulfuric acid or kiln-bake will remove the plastic parts) and microscope inspection might find more info.
A dental X-ray works fine,
The unit has a higher voltage rating than normal. Its specs should be easy to find.
Many thanks,
Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
rss: http://www.tinaja.com/whtnu.xml email: don@tinaja.com
Please visit my GURU\'s LAIR web site at http://www.tinaja.com
SOC873.
Hope This Helps! Rich
A stunt I discovered in the early '70's... run a phenolic-based package thru a hybrid firing furnace. It comes out the other end looking intact except it's now white... because it's ash. Carefully brush the ash away and you have a perfect die to take pictures of ;-)
...Jim Thompson
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
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