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Thermoelectric (Peltier) modules: TEC1-12706, 12710, 30 mm
What are TEC1-12706 dimensions? · Hardware · basis: Common TEC1 module sizes from manufacturer datasheets (Hebei I.T., Laird equivalents); thickness varies ±0.1 mm by maker
Long Earth Society build part. ΔT instrument and fan-running TEG on the LES thermoacoustic spools. The engines · all LES parts
- sizes
- 4 in table
Notes
- TEC1-12706: 40 × 40 × 3.8 mm (127 couples, 6 A, ~60 W heat pumping at ΔT 0); the standard hobby module. TEC1-12710: 40 × 40 × 3.3–3.4 mm, 10 A. 30 × 30 × 3.4 mm modules (TEC1-12704, 03104 class) for small loads. 50 × 50 and 62 × 62 exist for high current.
- Leads exit one edge (red +, black −); keep 5 mm clear there. Hot and cold faces are the ceramic plates: clamp between heat sinks with thermal paste, 4 × M3 at the heat-sink corners, never over-tighten (ceramic cracks).
- As a generator (Seebeck) a 12706 gives ~1–2 W at ΔT 100 K; the high-temperature TEG modules (TEG1-12611 etc.) share the 40 × 40 footprint but run to 300 °C.
- Why it's here: the LES thermoacoustic builds use a 12706 as a ΔT instrument and as a TEG on the cold spool to run the fan.
Sizes
| module | size_mm | thickness_mm | i_max_a | note |
|---|---|---|---|---|
| TEC1-12706 | 40 × 40 | 3.8 | 6 | standard hobby module |
| TEC1-12710 | 40 × 40 | 3.4 | 10 | thinner |
| TEC1-12704 / 03104 | 30 × 30 | 3.4 | 4 | small |
| TEC1-12730 | 62 × 62 | 4.8 | 30 | large |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Wikipedia | Thermoelectric cooling | web | CC BY-SA 4.0 (text) |
| Hebei I.T. (Shanghai) | TEC1-12706 datasheet | Manufacturer datasheet verify | |
| Long Earth Society | Engine builds that use these parts (videos and write-ups) | web, video | LES site |
Free files
★ Free files 3 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| tec1-12706-40x40x3.8 | TEC1-12706: 40 × 40 × 3.8 mm, 127 couples, 6 A, leads on one edge | STEP · STL |
| tec1-12710-40x40x3.4 | TEC1-12710: 40 × 40 × 3.4 mm (some 3.3), 10 A | STEP · STL |
| tec1-12704-30x30x3.4 | TEC1-12704 / 03104 class: 30 × 30 × 3.4 mm | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=thermoelectric-tec1
Fits with
Questions
What are TEC1-12706 dimensions?
40 × 40 × 3.8 mm (±0.1), leads 0.9 mm² on one edge, about 24 g. Fits between any two 40 mm heat sinks.
What is the difference between TEC1-12706 and 12710?
Current rating (6 vs 10 A) and thickness: 3.8 vs 3.3–3.4 mm. Same 40 × 40 footprint.
Can a Peltier module generate power?
Yes, as a Seebeck generator: a 12706 gives roughly 1–2 W at a 100 K temperature difference, enough for a 40 mm fan; dedicated TEG modules tolerate higher temperatures.