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White square ceramic Peltier module 40x40x4mm with 30cm wires

UXCell

UXCell TEC1-12702 2A 12V 23W 40x40x4mm Thermoelectric Cooler Peltier Module

SKU CH-Q4SA-E9BS0 MPN TEC1-12702

A 40 × 40 mm thermoelectric cooler that moves up to 23 W at 12 V for spot cooling or heating

  • Peltier effect creates up to 65 °C temperature difference between sides
  • Rated 12 V DC and 2 A for 23 W maximum power draw
  • Compact 40 × 40 × 4 mm ceramic plate weighs only 26 g
  • Operates across a wide -55 °C to 83 °C range
  • 30 cm lead wires simplify connection to a 12 V source

Product identity

The UXCell TEC1-12702 is a 40x40x4mm thermoelectric Peltier module rated for 12V and 23W. It suits hobbyists, experimenters or small-form-factor builders who need active spot-cooling for a CPU hotspot, a sensor package or a custom liquid loop. The 30cm lead allows flexible placement inside a chassis or test rig. Buyers who need high-capacity heat pumping for a full processor package should look elsewhere.

Thermals, noise and power

At 5.78V the module creates a 65C (149F) temperature differential across its ceramic faces while drawing 2A. Because it has no moving parts it runs silently, but the hot side must be mated to a heatsink immediately or the device will overheat and fail within seconds. The operating window spans -55C to 83C, so condensation control is the builder's responsibility.

Build integration

The 26g square plate fits tight spaces where a conventional block cannot, freeing up room around socket keep-out zones or memory slots. A 12V DC source capable of 2A is the only electrical requirement; no motherboard header or software control is involved. Mechanical mounting hardware and thermal interface material are not included and must be sourced separately.

How it compares

Measured against everything we stock in 2-in-1 Device Accessories, at today’s prices. Recalculated every night.

Price $25.99
Cheaper than about 93% of the 7,473 comparable items (median $56.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How do I mount the 40x40mm Peltier plate and what is the critical step to avoid destroying it?

Apply thermal paste, clamp the cold side to your load and the hot side to a heatsink, then power the 30 cm leads at 12 V; never run it without the heatsink or the module will overheat and fail in seconds.

What maintenance does the TEC1-12702 need over time?

No moving parts to service; periodically check that the heatsink remains tight, the thermal paste has not dried out, and the 30 cm power leads are undamaged.

What thermal limit appears first when the module runs continuously at 2 A?

The hot-side temperature must stay below 83 °C; if the heatsink cannot reject the 23 W load the junction hits that ceiling and the 65 °C differential collapses.

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