Pro-Range TEC1-12702 40x40mm Thermoelectric Cooler Peltier Module - 15.8V, 18W Cooling Capacity

The module is rated for 15.8V DC operation. While it can withstand brief peaks, continuous operation above this voltage, especially beyond the specified maximum of 15.5V-15.8V, can lead to overheating, reduced lifespan, or permanent damage to the thermoelectric elements. Always use a current-limited power supply matched to the 2A operating current.

For optimal performance, the module must be sandwiched between two heatsinks. Apply a thin layer of thermal paste on both ceramic faces. The cold side requires a heatsink to dissipate the absorbed heat, while the hot side needs a more substantial heatsink (often with a fan) to reject waste heat. Ensure even pressure distribution to avoid cracking the ceramic plates.

Yes. The direction of heat transfer is determined by the polarity of the applied DC voltage. By reversing the polarity, the module's hot and cold sides swap. This allows the same unit to be used for precise heating applications. Always stay within the rated voltage and current limits regardless of the operating mode.

A regulated DC power supply capable of delivering at least 15.8V and 2A continuous current is required. The supply should have low ripple and good stability. For startup, the module may draw a higher inrush current, so a supply with a slight overhead (e.g., 3A capability) is advisable for reliable operation.