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White square Peltier module 40mm with red and black wires

Unique-Bargains

Unique-Bargains TEC1-12703 12V 27W 40x40x4mm Peltier Module

SKU CH-AS3V-1E2Y5 MPN TEC1-12703

A 40 mm thermoelectric cooler rated 12 V and 27 W creates a 65 °C temperature difference at 5.78 V

  • Product typeGadgets
  • Provides active cooling using thermoelectric effect
  • Operates at 12 V drawing 3 A for 27 W power
  • Achieves 65 °C (149 °F) temperature difference at 5.78 V
  • Compact 40 × 40 × 4 mm module with 30 cm leads
  • Requires heat-sink on hot side to prevent damage

Thermoelectric cooler module 12V 27W

The Unique-Bargains TEC1-12703 is a solid-state thermoelectric cooler that moves heat from its cold side to its hot side when DC voltage is applied. It suits hobbyists and engineers building custom cooling, temperature-stabilisation or small-scale refrigeration projects.

Requires a heat-sink and 12 V DC supply

The module draws 3 A at the rated 12 V and measures 40 mm by 40 mm by 4 mm with a 30 cm lead length. A heat-sink on the hot side is mandatory; running the device without one for more than a few seconds causes internal overheating and permanent damage. The cold side can then be mounted to the object or enclosure being cooled.

For builders adding active cooling to small

It fits applications such as laser-diode stabilisation, sensor temperature control or compact Peltier refrigerators where a 27 W module is adequate. Buyers who need higher heat-pumping capacity, a different voltage or a pre-assembled cooler with integrated heat-sinks should look at other solutions.

How it compares

Measured against everything we stock in Tech Gadgets & Accessories, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 92% of the 5,998 comparable items (median $24.99).

Specifications

Product
Brand nameUnique Bargains
Product typeGadgets

Questions about this item

What temperature difference can the TEC1-12703 achieve when run at 5.78 volts?

At 5.78 volts the module produces a temperature differential of about 65 °C (149 °F) between its hot and cold faces.

How much heat must be removed from the hot side during continuous operation?

The module draws 3 A at 12 V for 27 W of electrical input, so the hot side must dissipate that 27 W plus the heat pumped from the cold side.

What external component is required before applying power to the module?

A heat-sink must be mounted on the hot side before the module is connected to any power supply to prevent internal overheating.

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