Trimmer potentiometers: Bourns 3296, 3266, 3339, 3006 — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/trimmer-potentiometers/  (CC BY 4.0)
Basis: KiCad 3D models of Bourns trimmer families (3296 25-turn 9.5 mm square, 3266 6.3 mm square, 3339 single-turn round, 3006 rectangular)
Catalog version: 2026-10-20

Sizes: see table below
- 3296W (the blue 25-turn square trimmer): 9.53 × 4.83 × 10.03 mm, pins on 2.54 mm pitch in a line (W) or triangle (X/Y/Z/P); adjuster on top (W, Y) or side (X, Z, P).
- 3266W is the 6.35 mm square version (6.35 × 4.5 × 6.7 mm). 3339 is a 6 mm round single-turn. 3006P is the 19 mm long rectangular 15-turn.
- For a printed case: a Ø3 mm hole over the adjuster lets a screwdriver reach it; keep 1 mm clearance over the body.

part  bbox_l_mm  bbox_w_mm  bbox_h_mm
bourns-3005-horizontal  20.6  10.9  4.1
bourns-3006p-horizontal  20.6  9.4  4.8
bourns-3266w-vertical  13.1  6.7  4.5
bourns-3266x-horizontal  12.1  7.7  4.5
bourns-3296p-horizontal  11.1  10.8  9.5
bourns-3296w-vertical  17.1  9.5  4.8
bourns-3296x-horizontal  16.0  10.5  4.8
bourns-3296y-vertical  17.1  9.5  4.8
bourns-3296z-horizontal  16.0  10.5  4.8
bourns-3339h-vertical  11.1  7.6  7.6
bourns-3339p-vertical  11.1  7.6  7.6

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- KiCad: kicad-packages3D library (origin of these files) — STEP, WRL — CC BY-SA 4.0 with KiCad exception — https://gitlab.com/kicad/libraries/kicad-packages3D

Free files (CC BY-SA 4.0 (KiCad library license, with the KiCad exception), KiCad library contributors; STEP + STL, 11 parts): https://xemstudio.com/files/kicad/trimmer-potentiometers/index.json
API: https://xemstudio.com/api/geometry?object=trimmer-potentiometers