TEC1-12704 Thermoelectric Cooler Peltier Module 40x40mm DC12V 4A 36W Semiconductor Cooling Plate for Mini Fridge Water Dispenser

The TEC1-12704 is a single-stage solid-state semiconductor thermoelectric Peltier cooling plate that uses the Peltier effect to create a hot side and cold side when powered by DC 12V, with zero moving parts for quiet compact cooling/heating projects.

It transfers heat across its 40×40mm aluminum oxide ceramic sandwich structure with bismuth telluride thermoelectric pellets; 127 internal thermocouple pairs deliver up to 36W maximum cooling power, widely used for small portable refrigeration, electronic temperature control and lab equipment cooling.

Product Spec

Item	Parameter Details
Chip Model	TEC1-12704
Overall Dimensions	40x40x4.2mm, 127 thermocouple pairs
Lead Wire Specification	Lead length: 100±5mm, standard RV wire, single end tinned 5mm
Internal Resistance	3.0~3.3Ω (Test condition: ambient temp 23±1°C, 1kHz AC test)
Maximum Temperature Difference	ΔTmax (Qc=0): Above 60°C
Maximum Operating Current	Imax=12A (Under rated voltage startup)
Rated Voltage	DC12V (Vmax: 15.5V)
Maximum Cooling Capacity	Qcmax = 36W
Assembly Pressure	85N/cm²
Operating Environment Temperature Range	-55°C ~ 83°C (Excessively high ambient temperature directly reduces cooling efficiency)
Sealing Process	Four sides sealed with standard 704 silicone rubber
Packaging Standard	Foam box packaging; storage ambient temperature: -10°C ~ 40°C
Storage Temperature Range	-40°C ~ 60°C

Key Product Features

• Solid-state no moving parts, fully noise-free operation with zero vibration
• Dual function: Creates cold surface (cooling) or reversible hot surface (heating) by flipping DC polarity
• Compact 40×40mm lightweight ceramic design, easy to integrate into small DIY enclosures
• RoHS compliant, non-toxic bismuth telluride semiconductor material, no refrigerant required
• Fast thermal response time with precise adjustable temperature control via DC power input
• High durability, rated for 200,000 service hours with minimal performance degradation
• Silicone edge sealing to block moisture ingress, suitable for indoor low-humidity environments
• Pre-tinned red/black leads for simple direct wiring to 12V DC power supplies

Application Scenarios

1. Mini portable water dispensers & desktop beverage chillers (matches original listing use case)
2. DIY small camping / car mini refrigerators & insulin travel cooling storage boxes
3. Electronic component cooling: CCD camera sensors, lab test equipment, compact CPU coolers
4. Beauty & cosmetic device temperature stabilizers (facial cryotherapy tools)
5. Dehumidifier prototype modules & small laboratory temperature calibration test chambers