Author Topic: SMD part id  (Read 484 times)

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Offline AgentfootTopic starter

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SMD part id
« on: November 07, 2024, 10:48:28 pm »
What exactly is this part? Picture of a broken on then another I found that looks to be the same. Has 3V in the middle above pin1 mark a = on the left and = and o on the right.
 

Offline AgentfootTopic starter

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Re: SMD part id
« Reply #1 on: November 08, 2024, 12:07:41 am »
Forgot to add its about 1.5mm by 2mm
 

Offline Solder_Junkie

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Re: SMD part id
« Reply #2 on: November 08, 2024, 02:49:35 pm »
Manufacturers use 2 or 3 character IDs on SMD transistors, Voltage regulators, etc. given the number of possibilities, you really need to refer to the circuit as 2 characters of ID are not sufficient to accurately determine the part, unless you are very lucky.

This database lists over 30 possibilities:
https://smd.yooneed.one/

SJ

 

Offline u666sa

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Re: SMD part id
« Reply #3 on: November 08, 2024, 04:22:50 pm »
* NE1102preliminarydatasheetRev0.0-Finish-1.pdf (570.68 kB - downloaded 24 times.)
 

Offline tooki

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Re: SMD part id
« Reply #4 on: November 08, 2024, 04:30:54 pm »
(Attachment Link)
The markings described  in that datasheet do not match the markings on the chip in the photo at all.
« Last Edit: November 08, 2024, 04:32:39 pm by tooki »
 

Offline wraper

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Re: SMD part id
« Reply #5 on: November 08, 2024, 05:08:59 pm »
^pin count does not match either.
 
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Offline tooki

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Re: SMD part id
« Reply #6 on: November 08, 2024, 06:07:29 pm »
I truly don’t understand why someone would bother to reply with an answer that is so clearly and obviously wrong. It’s not as though it’s some subtle difference.
 

Offline AgentfootTopic starter

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Re: SMD part id
« Reply #7 on: November 08, 2024, 06:31:08 pm »
Then the new twist. I just realized my cheap microscope mirrored the picture. So the chip actually reads "VE".

I know it had something to do button presses, since I have some buttons that no longer work.

I suppose I could take some measurements on the good one to help try and id it.
 
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Offline wraper

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Offline AgentfootTopic starter

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Re: SMD part id
« Reply #9 on: November 08, 2024, 06:50:48 pm »
That sure looks to be it. Im not sure if the markings on the left and right mean anything because they are different. I took some voltage measurements included on my drawing.
 

Offline wraper

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Re: SMD part id
« Reply #10 on: November 08, 2024, 06:55:40 pm »
Note that IC comes in several different packages that may look the same on the picture but dimensions are different.
 
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Offline AgentfootTopic starter

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Re: SMD part id
« Reply #11 on: November 08, 2024, 07:10:42 pm »
Ok thanks. It's going to take a miracle to actually get the part mounted. I don't work with stuff this small normally. But it's already broke so mind as well try.
 

Offline tooki

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Re: SMD part id
« Reply #12 on: November 08, 2024, 08:42:50 pm »
Those are easy to solder as long as you have a decent flux and a good pair of tweezers!

Edit: and good light. Trying to solder little fiddly shit in bad light is horrible.
 


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