Peltier elements generate heat or cold depending on their polarity.
The element consists of semiconductor material embedded between ceramic plates.
These elements must be used in conjunction with a heat sink to prevent overheating and burns.
Chip model: TEC1-12715
Size: 40 * 40 * 3.8 mm
Power: 142W
Voltage: 12 V (maximum 15.5 V)
Temperature: max 90° C
All technical data:
https://www.everredtronics.com/thermoelectric.TEC1.html
Further links to "TEC1-12715 Thermoelectric Peltier element - 142W, 40*40mm"
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