TEC1-12703 Thermoelectric Peltier Cooler Plate

TEC1-12703 Thermoelectric Peltier Cooler Plate is a compact and efficient solid-state device that utilizes the Peltier effect to transfer heat across its surfaces. This specialized module creates a cold side and a hot side when you apply a DC voltage, effectively functioning as a heat pump without any moving parts. Consequently, this capability makes it ideal for precise temperature control and spot cooling applications where traditional refrigeration is impractical. The TEC1-12703 specifically employs 127 bismuth telluride couples arranged in series, achieving a powerful cooling capacity (Q_max) while maintaining a small form factor. Furthermore, designers often integrate this module into systems requiring highly reliable, maintenance-free thermal management.

Key Features:

• Solid-State Cooling: Operates based on the Peltier effect, offering quiet, vibration-free, and highly reliable heat transfer with no refrigerants.
• High Thermal Capacity: Delivers a maximum cooling capacity (Q_max) tailored for small-to-medium cooling loads under optimal thermal conditions.
• Reversible Operation: You can reverse the heat transfer direction by simply reversing the polarity of the applied DC voltage.
• High Voltage Compatibility: Rated for up to 15.4 V, making it highly compatible with standard 12 V power supplies used in many electronics systems.
• Durable Construction: Features ceramic plates for electrical insulation and effective heat transfer, ensuring long-term operational stability.

Technical Specifications:

• Model Number: TEC1-12703
• Maximum Voltage (V_max): 15.4 V DC
• Maximum Current (I_max): 3.0 A
• Maximum Temperature Difference (ΔT_max): ≥ 67 °C (Under vacuum conditions)
• Maximum Cooling Power (Q_max): ≈ 30 W (Dependent on ambient temperature and hot side heatsink efficiency)
• Internal Resistance: 4.0 Ω ± 0.1 Ω (Measured at 25 °C)
• Operating Temperature: −55°C to +83°C

Mechanical Specifications:

• Material: Bismuth Telluride (Bi₂Te₃) Semiconductor Couples
• Ceramic Plates: High-density alumina (Al₂O₃) for durability and insulation.
• Number of Couples: 127
• Sealing: Typically edge-sealed (optional) to prevent moisture ingress, which improves longevity.

Dimensions:

• Module Size: 40 mm x 40 mm
• Thickness: 3.9 mm ± 0.1 mm
• Lead Wire Length: ≈ 150 mm (Standard)
• Lead Wire Gauge: 20 AWG (Standard, insulated)

Pinout and Wiring:

• Red Wire (+): Connect to the positive terminal of the DC supply.
• Black Wire (−): Connect to the negative terminal of the DC supply.
• Wiring Effect: When current flows from Red to Black, the side marked with the model number is the cold side, and the unmarked side is the hot side.
• Reversal: If you reverse the polarity, the sides will swap: the marked side becomes hot, and the unmarked side becomes cold. Consequently, this ability allows for temperature cycling applications.

Datasheet Reference:

• Download TEC1-12703 Series Thermoelectric Cooler Datasheet

Commonly Used in:

• Laboratory Equipment: Temperature stabilization for high-precision sensors and sensitive biological samples.
• Small Refrigerators: Mini-fridges, beverage coolers, and portable car fridges utilize this technology for silent cooling.
• Computer Cooling: Spot cooling for high-performance processors, graphics cards, or solid-state drives (SSDs).

Applications:

• Laser Diode Temperature Control: You achieve wavelength stability by actively maintaining the laser’s operating temperature (TEC modules are crucial here).
• Dehumidifiers: Used in small units to create a cold condensation surface for moisture extraction.
• CCD Camera Cooling: Actively cools image sensors in high-end scientific or astronomical cameras to reduce thermal noise.
• DIY Projects: Enthusiasts frequently use it for building custom chilling or heating systems.

Equivalent Models:

• TEC1-12704/12705/12706: Higher current models in the same 40x40mm form factor that offer proportionally higher cooling capacity (Q_max) but require more power.
• TEC2-19003: A two-stage cascade Peltier module, however, it achieves a much greater maximum temperature difference (ΔT_max).

Package Includes:

• 1 x TEC1-12703 Thermoelectric Peltier Cooler Plate (40x40mm)