977
edits
Changes
added more heatsink information
=== Heatsink ===
=== Heatsink ===
Fischer Elektronik SK 68 94 SA
STMBL originally used the Alutronic PR138/94-M3 heatsink:
* [https://www.reichelt.com/de/en/special-heat-sink-94x46x33mm-3-2k-w-m3-v-pr138-94-m3-p35400.html V PR138 - 94-M3: Special heat sink, 94x46x33mm, 3.2K - W, M3 at reichelt elektronik]
* [https://github.com/rene-dev/stmbl/blob/master/hw/kicad/v4.0/doc/heatsink.pdf stmbl/heatsink.pdf at master · rene-dev/stmbl] (shows drill/tap hole pattern for mounting HV board to heatsink)
A compatible replacement is a Fischer Elektronik SK 68 94 SA (M3 channels are shifted in by 0.2mm):
* [https://www.arrow.com/en/products/sk-68-94-sa/fischer-elektronik Fischer SK 68 94 SA | Arrow]
* [https://www.arrow.com/en/products/sk-68-94-sa/fischer-elektronik Fischer SK 68 94 SA | Arrow]
* 1pcs 8mm tall, 7mm OD, 3.6mm ID black nylon unthreaded standoffs (unmodified)
* 1pcs 8mm tall, 7mm OD, 3.6mm ID black nylon unthreaded standoffs (unmodified)
* 2pcs above standoff, modified to have a 2.5mm - 2.63mm tall flange, with the rest of the cylinder cut away to have a 2.6mm deep [https://en.wikipedia.org/wiki/Sagitta_(geometry) sagitta]
* 2pcs above standoff, modified to have a 2.5mm - 2.63mm tall flange, with the rest of the cylinder cut away to have a 2.6mm deep [https://en.wikipedia.org/wiki/Sagitta_(geometry) sagitta]
=== Case ===
=== Case ===