eurorack:sizes
This is an old revision of the document!
Table of Contents
Panel Sizes
This mainly discusses the dimension for the front panel but in the units used recommended PCB dimensions are noted.
Units used
These are based on standard rack measurement units, they are:
| Height | Rack Units | U | 44.45mm | 1.75“ |
| Width | Horizontal Pitch | HP | 5.08mm | 0.2” |
For Eurorack the height is 3U, 128.5mm.
Note: The height of the PCB behind this is typically 110mm giving 9.25mm clearance top and bottom to allow for rack mounts. The width is generally 0.1mm smaller (or more) to allow for side clearance.
Mounting
Mounting holes have a diameter of 3.2mm and are placed as follows:
Note: At 9HP and below only one drill hole is used.
Quick Reference
| HP | nominal (mm) | actual (mm) |
|---|---|---|
| 1 | 5.08 | 5 |
| 2 | 10.16 | 9.8 |
| 4 | 20.32 | 20 |
| 6 | 30.48 | 30 |
| 8 | 40.64 | 40.3 |
| 10 | 50.8 | 50.5 |
| 12 | 60.96 | 60.6 |
| 14 | 71.12 | 70.8 |
| 16 | 81.28 | 80.9 |
| 18 | 91.44 | 91.3 |
| 20 | 101.6 | 101.3 |
| 21 | 106.68 | 106.3 |
| 22 | 111.76 | 111.4 |
| 28 | 142.24 | 141.9 |
| 42 | 213.36 | 213 |
eurorack/sizes.1785861131.txt.gz · Last modified: by nigel