Heatsink for L293D or Similar Integrated Circuits
by r.vlad in Circuits > Arduino
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Heatsink for L293D or Similar Integrated Circuits
![P7040030.JPG](/proxy/?url=https://content.instructables.com/FUM/21RX/HINOB901/FUM21RXHINOB901.jpg&filename=P7040030.JPG)
While doing a project with 2 stepper motors I ran into a problem: the temperature of the L293D’s IC’s on my motor driver shield was too high. The fix: I’ve added a heatsink to each IC.
Materials:
- Aluminum heatsink (got mine from an broken computer power supply)
- Thermal conductive glue
- L293D chip
Tools:
- Vice and Saw (had to cut the heatsink from the PSU to fit)
- File
- Marker
Materials:
- Aluminum heatsink (got mine from an broken computer power supply)
- Thermal conductive glue
- L293D chip
Tools:
- Vice and Saw (had to cut the heatsink from the PSU to fit)
- File
- Marker
![P7040018.JPG](/proxy/?url=https://content.instructables.com/FBX/5XAD/HINOB8ZS/FBX5XADHINOB8ZS.jpg&filename=P7040018.JPG)
![P7040026.JPG](/proxy/?url=https://content.instructables.com/FWG/5YNU/HINOB8ZY/FWG5YNUHINOB8ZY.jpg&filename=P7040026.JPG)
![P7040021.JPG](/proxy/?url=https://content.instructables.com/FN9/6IKK/HINOB8ZW/FN96IKKHINOB8ZW.jpg&filename=P7040021.JPG)
![P7040025.JPG](/proxy/?url=https://content.instructables.com/FLG/60IN/HINOB8ZX/FLG60INHINOB8ZX.jpg&filename=P7040025.JPG)
Fix the heatsink in the vice and cut it to the needed dimension.
![P7040028.JPG](/proxy/?url=https://content.instructables.com/FPG/RCMP/HINOB8ZZ/FPGRCMPHINOB8ZZ.jpg&filename=P7040028.JPG)
Use a file to polish the margins of the heatsink.
![P7040041.JPG](/proxy/?url=https://content.instructables.com/F23/C45M/HINOB907/F23C45MHINOB907.jpg&filename=P7040041.JPG)
![P7040007.JPG](/proxy/?url=https://content.instructables.com/FRX/9D2Z/HINOB8ZN/FRX9D2ZHINOB8ZN.jpg&filename=P7040007.JPG)
![P7040016.JPG](/proxy/?url=https://content.instructables.com/F7F/33IG/HINOB8ZR/F7F33IGHINOB8ZR.jpg&filename=P7040016.JPG)
Remember where pin 1 of the IC is placed.
Put some thermal glue on the IC, place the heatsink and wait the recommended time for it to dry (5-8 minutes in my case).
Put some thermal glue on the IC, place the heatsink and wait the recommended time for it to dry (5-8 minutes in my case).
![P7040010.JPG](/proxy/?url=https://content.instructables.com/FMI/1JAA/HINOB8ZP/FMI1JAAHINOB8ZP.jpg&filename=P7040010.JPG)
Use the marker to make a sign on the heatsink of the IC’s pin 1.
Enjoy the improved IC !
Feel free to contact me with any questions/advice.
Enjoy the improved IC !
Feel free to contact me with any questions/advice.