Pro-Range TES1-12704 30x30mm Thermoelectric Cooler Peltier Module - 15.8V, 4A, 34.5W Cooling Capacity

The TES1-12704 is rated for a maximum operating current (Imax) of 4 Amps at a rated voltage (Vmax) of 15.8V DC. Exceeding these values can cause permanent damage to the semiconductor pellets. For optimal performance and longevity, it is recommended to use a regulated DC power supply capable of delivering at least 15.8V and 4A, paired with an effective heat sink on the hot side.

Mount the module between a cold-side interface (object to be cooled) and a hot-side heat sink using a thin layer of thermal paste on both ceramic faces. Apply even pressure to avoid cracking the ceramic. The hot-side heat sink is critical; it must be sized to dissipate the combined heat load (cooling capacity + electrical input power). Forced air or liquid cooling is often required to maintain the rated 34.5W cooling capacity and achieve the maximum 65°C temperature difference.

Yes. By reversing the polarity of the applied DC voltage, the heat flux direction is reversed, turning the cold side into the hot side. This allows the same module to be used for precise heating applications. The same electrical and thermal limits apply. For cyclic heating/cooling applications, a compatible H-bridge motor driver or dedicated TEC controller can be used to manage polarity switching and power regulation.

In standard TEC nomenclature, '12704' typically indicates the module's physical and electrical design: '127' often refers to the number of semiconductor couples (thermocouples) inside, and '04' can relate to the module's current rating or series grouping. For the TES1-12704, this correlates with its 4A maximum current and 30x30mm size, suggesting a design optimized for a balance of cooling power and input electrical requirements.