Author Topic: SMD component ID Help  (Read 893 times)

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Offline NikkiCTopic starter

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SMD component ID Help
« on: June 18, 2020, 05:56:17 am »
Hello,
I am trying to identify SMD components.
  • SOT-23-3 marked as "JCSL".  Component tester reports this as a N-JFET
  • SOT-23-3 marked as "SP L".  Component tester reports this as a P-E MOS
Please refer to the attached photos.  Would like to know what the actual components are if possible so as to get their datasheets. Since I don't have to do this often (thankfully), I am finding that SMD component identification is a mine field .  Can anyone offer any help? 


TIA, Nikki
 
 

Offline PA0PBZ

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Re: SMD component ID Help
« Reply #1 on: June 18, 2020, 09:11:07 am »
SP could be BSS84 but the other one I have no idea.
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Offline wasyoungonce

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Re: SMD component ID Help
« Reply #2 on: June 18, 2020, 09:25:56 am »
You have almost solved it yourself

In many cases the last 2 digits or code is date and or location made so just try the 1st letters.

JC = STK569, NCh Jfet. 
http://www.smdmark.com/en-US/smd-code-jc.html
http://www.hotenda.com/marking-code/search/list/JC.html
http://www.s-manuals.com/smd/jc
https://www.web-bcs.com/chips/j/chip_list_j11.html

SP =  P CH mosfet BSS84 though I'm not so sure.  The codes don't appear to match.
http://www.smdmark.com/en-US/search/code?id=SP
http://www.hotenda.com/marking-code/search/list/SP.html

Cross check with SMD code books...
https://www.sphere.bc.ca/download/smd-codebook.pdf

Probably the best site is (as suggested by Dave):
https://alltransistors.com/smd-search.php


Only you can decipher and decide but these will help.  From what I can see the JC is that mosfet mentioned though not so sure about the code SP.
« Last Edit: June 18, 2020, 09:31:49 am by wasyoungonce »
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Offline NikkiCTopic starter

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Re: SMD component ID Help
« Reply #3 on: June 18, 2020, 11:09:02 am »
Quote
SP =  P CH mosfet BSS84 though I'm not so sure.  The codes don't appear to match.

Actually they do match.  https://datasheet.octopart.com/BSS84-ON-Semiconductor-datasheet-95952793.pdf
Thank you!.  That info has really helped. 

Nikki
 


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