TEC1-12705/12706/12715 Peltier Thermoelectric Cooler Module 12V 40mm

TEC1 Peltier Thermoelectric Cooler Module – 40×40mm, 12V DC

Take precise temperature control into your own hands with this high-performance Peltier thermoelectric cooler module. Available in three models — TEC1-12705, TEC1-12706, and TEC1-12715 — these compact 40×40mm semiconductor modules use the Peltier effect to transfer heat from one side to the other, enabling efficient cooling or heating in a wide range of DIY electronics, lab, and industrial applications. Made in Mainland China.

Why Choose a Peltier Module?

Peltier (thermoelectric) modules have no moving parts, produce no vibration, and offer silent, reliable thermal management. They are ideal for custom coolers, CPU cooling projects, small refrigeration units, laser diode temperature control, and scientific experiments where precision matters.

Model Specifications at a Glance

TEC1-12705

• Dimensions: 40 × 40 × 3.8mm
• Thermocouple Pairs: 127
• Rated Voltage: DC 12V (Vmax: 15.5V)
• Max Operating Current (Imax): 5A
• Cooling Capacity (Qcmax): 45W
• Max Temperature Difference (ΔTmax): >61°C
• Internal Resistance: 2.4–2.7Ω @ 23°C (1kHz AC)
• Operating Temperature Range: -55°C to 83°C
• Wire: 100±5mm lead, RV standard wire, 5mm tin-plated single end
• Sealing: Standard 704 silicone rubber on all four sides

TEC1-12706

• Dimensions: 40 × 40 × 3.75mm
• Rated Voltage: DC 12V (Vmax: 15V; startup current: 5.8A)
• Operating Current (Imax): 4.3–4.6A
• Cooling Capacity (Qcmax): 60–72W
• Max Temperature Difference (ΔTmax): >59°C
• Internal Resistance: 2.1–2.4Ω @ 23°C (1kHz AC)
• Operating Temperature Range: -55°C to 83°C

TEC1-12715

• Dimensions: 40 × 40 × 3.3mm
• Max Voltage: 15.4V
• Max Current: 15A
• Cooling Capacity: 134W
• Max Cooling Temperature Range: 65°C

Key Features

• ✅ Three models available — choose 5A, 6A, or 15A to match your application
• ✅ Compact 40×40mm footprint — easy to integrate into tight spaces
• ✅ Wide operating temperature range — -55°C to 83°C
• ✅ No moving parts — silent, vibration-free operation
• ✅ Silicone-sealed edges — improved moisture resistance
• ✅ Foam box packaging — protected delivery, storage down to -10°C
• ✅ Dual-function — works as both cooler and heater by reversing polarity

Common Applications

• DIY mini refrigerators and portable coolers
• CPU, GPU, and electronics thermal management
• Laser diode and sensor temperature stabilization
• Laboratory and scientific cooling setups
• Beverage cooling modules
• STEM and electronics education projects

Package Includes

• 1 × Peltier Thermoelectric Cooler Module (model of your choice)

Important Notes

• Photos are for illustration purposes only; refer to specifications for exact dimensions.
• Slight measurement differences may occur due to manual measuring processes.
• Screen colour calibration may affect how the product appears in photos.
• Always pair with an adequate heat sink and thermal compound on the hot side for optimal performance.

Related Products

• 1-Channel SCR Solid State Relay Module DC3-24V 40A Optocoupler – ideal for switching power to your Peltier module
• 1.8M DisplayPort to HDMI Cable 4K – DP Adapter for PC & TV – connect your build's display outputs

For further reading on thermoelectric cooling principles and energy efficiency in electronics, visit the U.S. Department of Energy – Energy Saver.

Learn more: Thermoelectric generator

Frequently Asked Questions

Q: What is the difference between the TEC1-12705, TEC1-12706, and TEC1-12715 Peltier modules?

A: The three models differ primarily in current capacity and cooling power. The TEC1-12705 operates at up to 5A with 45W of cooling capacity; the TEC1-12706 handles 4.3–4.6A with 60–72W of cooling; and the TEC1-12715 supports up to 15A with 134W of cooling capacity. Choose the model that matches the thermal load of your project.

Q: Do I need a heat sink with this Peltier thermoelectric cooler module?

A: Yes — a heat sink (and ideally a fan) on the hot side is essential. Without adequate heat dissipation on the hot side, the module's efficiency drops sharply and it can overheat. Apply thermal paste between the module surfaces and any heat sink or cooling plate for best results.

Q: Can the TEC1 Peltier module be used for heating as well as cooling?

A: Absolutely. Reversing the polarity of the DC supply swaps which side gets cold and which gets hot, making these modules suitable for both cooling and heating applications in temperature-controlled enclosures, scientific instruments, and custom electronics builds.

Q: What power supply do I need for these Peltier modules?

A: All three models operate at a rated voltage of 12V DC. For the TEC1-12705 you need a supply capable of at least 5A; for the TEC1-12706, at least 6A (to handle startup current); and for the TEC1-12715, a supply rated at 15A or higher. Always use a regulated DC power supply for consistent performance.