Mounting the Teensy and heat dissipation

D

DrM

Well-known member
Hi,

What is the recommendation for mounting the Teensy 4 or 4.1, on another board?

Is there a minimum clearance?

For example, do we need to allow space for heat dissipation for the parts on the bottom of the T4?

Thank you
 
Typically when I mount the T4 or t41 on a board I am using normal height headers and sometimes low profile headers. Havent had an issue with mounting that way - using headers does leave space between the botom of the t4 and the PCB I am mounting them too. Also when I do breadboarding they bottom of the board is just about touching the board so guess it will depend on your application and system clock you are running.
 
@DrM: In my TeensyMidiPolySynth (TMPS), I have both a T4.1 running at 600MHz (display / MIDI / debug / USBhost) & a T4.0 running at 816MHz (audio / USBaudio / debug), each mounted on a 7" x 9" PCB, all enclosed in a 3-D printed 10" x 7.5" x 3" box (with a couple of rows of ventilation holes across the back panel, but nothing on any other side). Neither of the two Teensy processors have any additional cooling and/or heatsinks attached. The processor temperatures never show more than a 25 degrees C temperature rise above ambient (maximum) when everything is being pushed to the MAX (all 12-poly, 3-voice oscillator objects active, all filter objects active, all modulator objects active, full reverb active, ladder filter active, traditional circular DIN MIDI in/out actively sending/receiving, USB MIDI in/out actively sending/receiving, USBhost MIDI in/out actively sending/receiving, USBaudio out sending, both debug ports connected & sending, etc.). The processor loading shows close to 50% on the T4.1 & close to 95% on the T4.0.

Hope that helps . . .

Mark J Culross
KD5RXT

P.S. Ignore the 40-pin connector that appears to be located in the middle of the PCB. It's merely a pigment of KiCADs imagination (pigment instead of figment intentional, pun intended). MJC

1763075728238.png
 
Great. Actually, I just looked at the Teensy card again. it seems there are only passives on the bottom. Presumably not with a lot of power dissipation.

Maybe @PaulStoffregen would confirm? Sorry to bother you Paul, its an OCD moment. This is for deployment, I have to be super sure about it.
 
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