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TEC1-12703 Thermoelectric Cooler Peltier Plate Module 30x30mm 3A 12703 Peltier Module - NA176

TEC1-12703 Thermoelectric Cooler Peltier Plate Module 30x30mm 3A 12703 Peltier Module - NA176


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The TEC1-12703 30x30mm Thermoelectric Cooler 3A Peltier Module is the simple application of the Peltier Thermoelectric Effect. The module features 127 semiconductor couples in the area of 30 mm x 30 mm. Thermoelectric coolers also known as TEC or Peltier Module create a temperature differential on each side. One side gets hot and the other side gets cool.

Therefore, they can be used to either warm something up or cool something down, depending on which side you use. You can also take advantage of a temperature differential to generate electricity. This Peltier works very well as long as you remove the heat from the hot side. After turning on the device, the hot side will heat quickly, the cold side will cool quickly.

If you do not remove the heat from the hot side (with a heat sink or other device), the Peltier will quickly reach stasis and do nothing. We recommend using an old computer CPU heatsink or another metal block to pull heat from the hot side. We were able to use a computer power supply and CPU heatsink to make the cold side so uncomfortable we could not hold our finger to it.

A thermoelectric cooling (TEC) module is a semiconductor-based electronic component that functions as a small heat pump. By applying the DC power source to a TEC, heat will be transferred from one side of the module to the other. It creates a cold and hot side. They are widely used in industrial areas, for example, computer CPUs, CCDs, portable refrigerators, medical instruments, and so on and also Known as Thermoelectric cooling modules, Thermoelectric modules, Peltier modules, and Thermoelectric cooling modules.


  • Model: TEC1-12703
  • Operating Voltage: 12V DC
  • Maximum Voltage: 15V
  • Maximum Current: 3A
  • Maximum Power: 30W
  • Maximum Temperature: 65°C
  • Storage Conditions: -40 ~ 60 °C
  • Mounting Pressure: 85N/cm2
  • Refrigeration Power: Qcmax 18W
  • Internal Resistance: 4.0 ~ 4.3Ω (ambient temperature 23 1 °C, 1kHZ Ac testing)
  • Working Environment: temperature range -55°C ~ 83 °C (high ambient temperatures drop directly affect the cooling efficiency)
  • Element Logarithmic: 127


  • Small module
  • Easy transition between the hot side to the cool side and vice-versa just by reversing the polarity of the supply
  • Quality-tested cooling cells
  • Solid-state, vibration-free, noise-free
  • Simple to install and operate
  • Should be used with a heat sink


When coupled with an appropriate heat sink and power source, TEC1 Peltier Modules are suitable for the following applications…

  • Liquid Component Cooling – Ideal for performance PC applications, TEC1 Peltier Modules are tested to cool CPUs and GPUs to extreme temperatures when used with 12v PSU rails and optimized CPU heat sinks.
  • Food and Beverage Refrigeration – Precision temperature management allows for use in temperature-sensitive food and beverage refrigeration applications requiring exacting cooling (or heating).
  • Commercial Portable Cooling – Approved for use in commercial transport, TEC1 Peltier Modules can be applied to manage DTmax temperatures of up to 68˚C.
  • Temperature Stabilization – Stabilize volatile temperatures with ease and superior energy efficiency when paired with a precision Peltier control module.
  • Precision Temperature Control – For research laboratories, universities, or any precision temperature control situation with a range of up to 68˚C, TEC1 Peltiers provide unparalleled control.
  • Medical and Photonic Systems – Trusted in thousands of medical and photonic systems applications, TEC1 Peltier Modules offer premier precision temperature control - even in extreme temperature differentials - few coolers can match.

Important Safety Notice:

Please refer to this safety notice before using TEC1 Modules.

  • Heating or cooling with the same module is possible simply by reversing polarity. The lettered side of modules is the “hot side.”
  • Do not attempt to use TEC1 Peltier Modules without a fan or liquid-cooled heat sink.
  • Due to extreme DTmax temperature differentials, module damage, fire, or operator injury can occur when sufficient thermal resistance is not present.
  • For your safety, use TEC1 Peltier Modules with caution and care.

Package Included:

1 x TEC1-12703 Thermoelectric Cooler Peltier Plate Module