TEC1-12705 Thermoelectric Cooler Peltier Module DC12V 5A 45W 40x40mm Semiconductor Cooling Plate

TEC1-12705 is a single-stage solid-state Peltier thermoelectric cooling plate that leverages the Peltier effect to create reversible cooling/heating when supplied with DC power; no moving parts, silent operation, compact 40×40mm ceramic construction.

This semiconductor cooling module contains 127 thermocouple pairs, runs on standard 12V DC power, moves up to 45W of heat, and delivers a maximum 65–70°C temperature difference between its cold and hot ceramic sides. Reversing wire polarity instantly swaps cooling and heating functions for dual-purpose thermal control.

Performance:

Chip Model: TEC1-12705

Overall Dimensions: 40x40x3.8mm, Thermocouple Pairs: 127

Wire Specifications: Lead length 100±5mm, standard RV wire, single end 5mm tin-plated

Internal Resistance: 2.4~2.7Ω (Tested at ambient temperature 23±1°C, 1kHz AC)

Maximum Temperature Difference: ΔTmax (Qc=0) ≥61°C

Operating Current: Imax=5A (When powered by rated voltage)

Rated Voltage: DC 12V (Max Voltage Vmax: 15.5V)

Max Cooling Capacity: Qcmax=45W

Assembly Pressure: 85N/cm²

Operating Environment: Temperature range -55°C ~ 83°C (Excessively high ambient temperature will directly reduce cooling efficiency)

Sealing Process: Sealed with standard 704 silicone rubber on all four sides

Packaging Standard: Foam box packaging; storage ambient temperature: -10°C ~ 40°C

Storage Temperature Range: -40°C ~ 60°C

Marked side = Cold cooling surface

Unmarked blank side = Heat dissipation surface

Product Features

1. No moving mechanical parts: Zero vibration, completely silent cooling/heating with zero wear from fans or compressors
2. Dual reversible function: Swap cold/hot sides by reversing DC wire polarity for both cooling and heating tasks
3. Compact uniform ceramic build: Flat 40×40mm ceramic faces for full contact with heatsinks, easy bonding with thermal paste
4. High thermal transfer efficiency: Premium bismuth telluride semiconductor pellets deliver stable 45W heat pumping capacity
5. Durable sealed construction: Silicone edge sealing prevents moisture ingress, supports millions of thermal cycle shifts
6. Plug-and-play low voltage operation: Works with standard 12V DC power supplies common in DIY electronics and industrial setups
7. Thin profile (3.8mm thickness): Fits tight, space-limited enclosures for mini cooling projects

Practical Application Scenarios

1. DIY Mini Refrigeration & Wine Coolers: Build compact desktop mini-fridges, portable beverage chillers, or small wine storage enclosures
2. Electronics Thermal Management: Cool embedded CPU boards, laser diodes, camera sensors, and 3D printer hotend temperature stabilizers
3. Laboratory & Microfluidic Devices: Precision temperature control for lab test chambers, biological sample cooling, and microscope thermal stages
4. Beauty & Medical Equipment: Cold facial beauty cryotherapy devices, portable medical cold compresses, and constant-temperature incubators
5. Custom Heating & Dehumidifying Gear: Low-wattage small-space heaters, portable air dehumidifiers, and aquarium temperature regulators (reverse polarity mode)