# Part identification

**URL:** <https://forum.digikey.com/t/part-identification/5464>\
**Category:** Discrete Semiconductor Products\
**Tags:** diodes-incorporated, part-identification, transistors\
**Created:** [February 4, 2020, 10:42pm UTC](https://forum.digikey.com/t/part-identification/5464 "2020-02-04T22:42:09Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![lukash](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/lukash/32/6744_2.png) [@lukash](https://forum.digikey.com/u/lukash)\
**Post date:** [February 4, 2020, 10:42pm UTC](https://forum.digikey.com/t/part-identification/5464/1 "2020-02-04T22:42:09Z")

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I’m having issues identifying this part - my guess would be combined resistors or optocoupler but searching for the DABB3 or DAB83 or DA883 did not lead to much. Anybody has an idea?

 ![Photo_00017](https://global.discourse-cdn.com/digikey/original/2X/f/f2e607cfeedabeb2888149cea44c65bd82f77f36.jpeg)  
 ![Photo_00018](https://global.discourse-cdn.com/digikey/original/2X/4/4ad1d99ad0203988f64b06c1394021f08022e748.jpeg)

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**Author:** ![Glenda\_1324](https://avatars.discourse-cdn.com/v4/letter/g/e495f1/32.png) [@Glenda\_1324](https://forum.digikey.com/u/Glenda_1324)\
**Post date:** [February 5, 2020, 2:28am UTC](https://forum.digikey.com/t/part-identification/5464/2 "2020-02-05T02:28:00Z")

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I do not find anything on these markings. It is possible that they are proprietary to the board production. You might try searching for a schematic of the board if you have the manufacturer and model number of the product the board is out of. Glenda

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**Author:** ![ReidLandsrud](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/reidlandsrud/32/2052_2.png) [@ReidLandsrud](https://forum.digikey.com/u/ReidLandsrud)\
**Post date:** [February 5, 2020, 4:54pm UTC](https://forum.digikey.com/t/part-identification/5464/3 "2020-02-05T16:54:41Z")

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This appears to me like a Diodes Inc. marking scheme. Three Letter/Number part ID followed by the two digit date code, and it is displayed in both orientations. That leads me to believe it may be this part: [https://www.digikey.com/product-detail/en/diodes-incorporated/DMN61D9UDW-7/DMN61D9UDW-7DICT-ND/5453157](https://www.digikey.com/product-detail/en/diodes-incorporated/DMN61D9UDW-7/DMN61D9UDW-7DICT-ND/5453157)

Please verify with the data sheet.

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**Author:** ![lukash](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/lukash/32/6744_2.png) [@lukash](https://forum.digikey.com/u/lukash)\
**Post date:** [February 5, 2020, 10:00pm UTC](https://forum.digikey.com/t/part-identification/5464/4 "2020-02-05T22:00:20Z")

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I have traced the connection on the PCB and it indeed matches the Diones Inc. MOSFET and makes sense for the circuit. Amazing, thank you!

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**Author:** ![ReidLandsrud](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/reidlandsrud/32/2052_2.png) [@ReidLandsrud](https://forum.digikey.com/u/ReidLandsrud)\
**Post date:** [February 5, 2020, 10:06pm UTC](https://forum.digikey.com/t/part-identification/5464/5 "2020-02-05T22:06:07Z")

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You are welcome! Glad to hear it will work.

Thanks,  
Reid L.