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40×40mm 3A single-stage semiconductor cooling module, suitable for standard temperature control applications, offering stable cooling and wide applicability. 🟧 Price List Contact Customer Service 🟦 Product PDF Spec Contact Customer Service ⬜ Certifications Contact Customer Service 🟪 Contact customer Contact Customer Service 🟨 MOQ:1 Pcs 🟥 Fast Delivery:2-15 Days 🟩 Source Factory：Online Factory Video 🟫 Multiple Payment Methods：T/T|PayPal|Alipay ⬛ Pre|After Service：+86 13377785035|xyy@kkg.tw
🔷Thermoelectric Cooler's Product Drawing
Marking:
Ceramic Substrate of Peltier Cooler: Alumina
Lead Wire Length of Peltier Module: customized per customer
External Terminals of TEC Cooler: customized per customer
Front-side Printing of Thermoelectric Cooler peltier: Part Number + Date Code (YYYY/MM)
Encapsulant Materiat of Peltier Cooling Module: 704 Silicone (White)
🔷Thermoelectric Cooling Device's Product Detail
| Item | Value |
|---|---|
| Specification | TEC112703 |
| Material | Bismuth Telluride |
| Operating Voltage | 12V |
| Maximum Voltage | 15.4V |
| Maximum Current | 3A |
| Maximum Temperature Difference | 67℃ |
| Product Type | Single-stage Thermoelectric Cooler (TEC) |
| Maximum Cooling Capacity | 29.8W |
| Overall Dimensions | 40×40 mm |
| Electrical Conductivity | 850-1250 S/cm |
🔷TEC Cooler's Model Selection
| Model | Thermocouple Pairs | Umax(volts) | Imax(amps) | DTmax(°C) | Qmax(watts) | Resistor(Ω) | Length(mm) | Width(mm) |
| TEC-03102-30x6x3.25 | 31 | 3.8 | 2.2 | 67 | 4.6 | 1.37 | 30 | 6 |
| TEC-03102-30x6x3.3 | 31 | 3.8 | 2.7 | 66 | 5.7 | 1.11 | 30 | 6 |
| TEC-03104-30x6x3.3 | 31 | 3.8 | 4.3 | 66 | 8.9 | 0.71 | 30 | 6 |
| TEC-06102-30x5.7x3.1 | 61 | 7.4 | 2 | 67 | 8.1 | 3 | 30 | 5.7 |
| TEC-06503-30x7x2.55 | 65 | 7.9 | 3.4 | 67 | 15 | 1.85 | 30 | 7 |
| TEC-06302-38x7.6x3.04 | 63 | 7.6 | 2.4 | 67 | 10 | 2.59 | 38 | 7.6 |
| TEC-03102-30x8x3.8 | 31 | 3.8 | 2.9 | 67 | 6.1 | 1.03 | 30 | 8 |
| TEC-07102-30x8x2.9 | 71 | 8.6 | 2.7 | 67 | 12.7 | 2.6 | 30 | 8 |
| TEC-06502-8x40x3 | 65 | 7.9 | 2.4 | 67 | 10.7 | 2.59 | 8 | 40 |
| TEC-05304-30x9.8x3.1 | 53 | 6.4 | 4.2 | 67 | 15.1 | 1.22 | 30 | 9.8 |
| TEC-01704-10x10x3.1 | 17 | 2.1 | 4.1 | 68 | 4.7 | 0.4 | 10 | 10 |
| TEC-03101-10x10x3 | 31 | 3.8 | 1.4 | 68 | 2.9 | 2.2 | 10 | 10 |
| TEC-06303-60x10x3.7 | 63 | 7.6 | 3.4 | 67 | 14.4 | 1.81 | 60 | 10 |
| TEC-04901-12x12x2.9 | 49 | 5.9 | 1.5 | 67 | 5 | 3.15 | 12 | 12 |
| TEC-03102-15x15x4 | 31 | 3.8 | 2.5 | 66 | 5.3 | 1.19 | 15 | 15 |
| TEC-03102-15x15x3.8 | 31 | 3.8 | 2.8 | 66 | 5.9 | 1.07 | 15 | 15 |
| TEC-04904-15x15x3.1 | 49 | 5.9 | 4.2 | 67 | 13.9 | 1.13 | 15 | 15 |
| TEC-04804-15x15x3.32 | 48 | 5.8 | 4.3 | 66 | 13.7 | 1.1 | 15 | 15 |
| TEC-04902-18x18x4 | 49 | 5.9 | 2.4 | 67 | 7.8 | 2.02 | 18 | 18 |
| Model | Thermocouple Pairs | Umax(volts) | Imax(amps) | DTmax(°C) | Qmax(watts) | Resistor(Ω) | Length(mm) | Width(mm) |
| TEC-04902-20x20x4 | 49 | 5.9 | 2.1 | 66 | 6.8 | 2.32 | 20 | 20 |
| TEC-04903-20x20x3.6 | 49 | 5.9 | 3.1 | 66 | 10.1 | 1.55 | 20 | 20 |
| TEC-07102-20x20x4 | 71 | 8.6 | 2.3 | 66 | 11 | 3 | 20 | 20 |
| TEC-07103-20x20x3.5 | 71 | 8.6 | 3.3 | 66 | 16 | 2.07 | 20 | 20 |
| TEC-06311-20x40x3.05 | 63 | 7.6 | 11.2 | 67 | 47.3 | 0.55 | 20 | 40 |
| TEC-06311-40x20x3.05 | 63 | 7.6 | 11.2 | 67 | 47.3 | 0.55 | 40 | 20 |
| TEC-07102-23x23x4 | 71 | 8.6 | 2.3 | 66 | 11 | 3 | 23 | 23 |
| TEC-07103-23x23x3.5 | 71 | 8.6 | 3.3 | 66 | 16 | 2.07 | 23 | 23 |
| TEC-04903-25x25x4.2 | 49 | 5.9 | 3.9 | 67 | 12.9 | 1.22 | 25 | 25 |
| TEC-07102-30x30x4 | 71 | 8.6 | 2.3 | 66 | 11 | 3 | 30 | 30 |
| TEC-07103-30x30x3.7 | 71 | 8.6 | 3.3 | 66 | 16 | 2.07 | 30 | 30 |
| TEC-07103-30x30x4 | 71 | 8.6 | 3.6 | 66 | 17.4 | 1.9 | 30 | 30 |
| TEC-12701-30x30x4.55 | 127 | 15.4 | 1.3 | 67 | 11.4 | 9.25 | 30 | 30 |
| TEC-12702-30x30x4.2 | 127 | 15.4 | 2 | 67 | 17.4 | 6.08 | 30 | 30 |
| TEC-12702-30x30x4.07 | 127 | 15.4 | 2.2 | 67 | 18.9 | 5.6 | 30 | 30 |
| TEC-12703-30x30x3.7 | 127 | 15.4 | 3.4 | 66 | 28.9 | 3.65 | 30 | 30 |
| TEC-12704-30x30x3.4 | 127 | 15.4 | 4.2 | 66 | 36.2 | 2.92 | 30 | 30 |
| TEC-12702-40x40x4.2 | 127 | 15.4 | 2.8 | 66 | 24.1 | 4.38 | 40 | 40 |
| TEC-12703-40x40x3.9 | 127 | 15.4 | 3.4 | 66 | 28.9 | 3.65 | 40 | 40 |
| Model | Thermocouple Pairs | Umax(volts) | Imax(amps) | DTmax(°C) | Qmax(watts) | Resistor(Ω) | Length(mm) | Width(mm) |
| TEC-12704-40x40x3.4 | 127 | 15.4 | 4.2 | 66 | 36.2 | 2.92 | 40 | 40 |
| TEC-12704-40x40x4 | 127 | 15.4 | 4.8 | 66 | 41.1 | 2.57 | 40 | 40 |
| TEC-12705-40x40x3.65 | 127 | 15.4 | 5.6 | 66 | 48 | 2.2 | 40 | 40 |
| TEC-12706-40x40x3.95 | 127 | 15.4 | 6.6 | 67 | 55.9 | 1.89 | 40 | 40 |
| TEC-12707-40x40x4 | 127 | 15.4 | 7.4 | 67 | 62.9 | 1.68 | 40 | 40 |
| TEC-12708-40x40x3.6 | 127 | 15.4 | 8.8 | 67 | 74.9 | 1.41 | 40 | 40 |
| TEC-12716-40x40x3.2 | 127 | 15.4 | 16.3 | 66 | 139 | 0.76 | 40 | 40 |
| TEC-06303-40x20x3.6 | 63 | 7.6 | 3A | 66 | 22.8 | 1.98 | 40 | 20 |
🔷Thermoelectric Peltier's Performance Curve
🔷Element Peltier's Product Feature
1. Single-stage thermoelectric cooling structure
2. The ceramic substrate provides highly efficient heat conduction and dissipation, ensuring silent operation with no mechanical vibration;
3. Rapid temperature response and stable temperature control accuracy;
4. High temperature and pressure resistance, impact resistance, and durability;
5. Switching between cooling and heating modes by reversing the current direction, suitable for standard power supply conditions.
🔷Specific Applications of TEC Product
1. Laser Industry: Temperature control and heat dissipation for laser heads and laser modules
2. Medical Equipment: Biochemical analyzers, aesthetic medical devices, and small medical refrigerators
3. Precision Instruments: Temperature protection for optical lenses, sensors, and industrial control chips
4. Refrigeration Equipment: Car mini-fridges and portable refrigeration and preservation devices
5. Electronic Devices: Cooling and heat dissipation for drones, communication modules, and power amplifier components
🔷Precautions for Using TEC Cooling Plates
1. Hot/Cold Side Check
▪ Red wire = positive (+), black wire = negative (-).
▪ Power on briefly (≤3 seconds) without heat sink:
▪ Warm side = hot side; cool side = cold side.
⚠️ Do not exceed 3 seconds (risk of burnout).
2. Wiring & Power
▪ Red = positive (cooling), reverse polarity for heating.
▪ Use power supply with ripple < 10%.
3. Voltage Calculation
▪ Model example: TEC1-12706
▪ 127 = thermocouple count; 06 = max current (A).
▪ Limit voltage = count × 0.12 (127×0.12=15.4V).
▪ Working voltage = 78% of limit (15.4×0.78=12.01V).
4. Thermal Recovery
▪ Wait ≥15 minutes for TEC to return to room temperature before reuse.
5. Sealing
▪ Seal edges with 704 silicone or epoxy to prevent moisture and extend life.
6. Installation
▪ Clean TEC, heat sink, cold plate; apply thin thermal grease.
▪ Tighten screws evenly; fill gap with 25–30mm insulation.
7. Pressure
▪ Install pressure: 150–300 PSI (avoid too low/high pressure).
8. Resistance Test
▪ Test resistance with LCR meter/compensated ohmmeter.
▪ Multimeter readings are only for reference.
The TEC1-12705 (40×40 mm) semiconductor cooling module, with its 12V/5A power rating, 40W cooling capacity, ±0.1°C temperature control accuracy, and standard 40×40 mm dimensions, has become the mainstream solution for temperature control of core components such as lasers, infrared devices, CCDs, and LEDs in optoelectronic equipment.
Yanghai Technology has been deeply rooted in the thermoelectric cooling industry for over a decade. As a comprehensive enterprise integrating R&D, manufacturing, sales, and service, the company places technological innovation at its core and continuously advances into cutting-edge industry applications.
We provide global customers with highly reliable, cost-effective thermoelectric cooling products and solutions, and are committed to becoming a trusted partner in the industry.
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