LCR-T4 (12864LCD ESR SCR Meter Transistor Tester)

by HarryCayne, published

LCR-T4 (12864LCD ESR SCR Meter Transistor Tester) by HarryCayne Jan 23, 2016
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4659Views 778Downloads Found in Electronics


Enclosure for an LCR -T4 transistor tester
Powered by a 9V battery which is easy to remove if used for any other purpose
you need 4 pieces of 8mm M3 screws (or 3mm diameter sheet metal screws even better)

Print Settings


My custom made delta 3d printer


Doesn't Matter


Doesn't Matter


200 micron




the sharp corners of the PCB has to be sanded or cut otherwise won't fit in the enclosure (approx. 1 mm from each corner)
I used for the bottom part approximately 2m of PLA filament and 3.2m for the top part

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  • There are at least two styles of LCR-T4's--one with a BLUE button (YES!) and one with a YELLOW button (NO!--too tall).
  • This case is for the one with the BLUE button (see AliExpress link posted below).
  • This case is compact and very functional compared to the stock case.

Yes, I have exactly the same issue, tried lengthening it by 2mm, still doesn't fit.

Sad Face, really like the design with the battery as a prop stand...

I liked the design enough that I bought two "correct" LCR-T4's, one for me and one for a gift.

Maybe the designer can post the CAD files so someone with CAD skills can modify the design.

Hi, i have the same tester and it seems that this design is small

Hi, mine fits in perfectly, your printer might print little smaller

Hi, I was wondering if you could provide a link to the LCR-T4 that you purchased. I believe there are several variants of the LCR-T4. I really like your design and would like to make sure I get the LCR-T4 that corresponds to it. Thanks!

Hi, happy to hear you like it, the seller i bought from don't have it any more but this has to be the same http://www.aliexpress.com/store/product/New-Mega328-Transistor-Tester-Diode-Triode-Capacitance-ESR-Meter-MOS-PNP-NPN-L-C-R-Well/1962265_32681147331.html, don't forget to round the sharp corners with a sandpaper otherwise it won't enter. Happy tinkering!