Pro-Range TEC1-12704 40x40mm Thermoelectric Cooler Peltier Module - 15.8V, 4A, 34.5W

The module is rated for a nominal input of 15.8V DC at 4A, resulting in an approximate power draw of 63.2 Watts under standard operating conditions. It is crucial to use a power supply capable of delivering this current steadily to achieve the specified 34.5W cooling capacity and avoid performance degradation.

For optimal performance, the module must be sandwiched between two heatsinks. The cold side requires a heatsink to absorb the target heat, while the hot side needs a more substantial, actively cooled (e.g., fan) heatsink to dissipate the transferred and electrical waste heat. Apply even pressure across the ceramic plates during mounting to prevent cracking.

This specification indicates the maximum achievable temperature difference (ΔT) between the module's cold side and hot side when the hot side is held at a specific temperature (typically 27°C) and no heat load is applied. In practical applications with a heat load, the actual ΔT will be lower. This value represents the module's peak thermodynamic pumping capability.

Yes. By reversing the polarity of the applied DC voltage, the heat pumping direction is reversed. The side that was previously cold becomes hot, and vice versa. This allows the same module to be used for precise heating applications, though the heating capacity will differ from the cooling capacity due to the additional Joule heating from the input current.