High‑quality TEC1‑12708 thermoelectric cooler 40*40mm Peltier cooling element, high temperature difference thermoelectric cooling module for industrial chiller, laser cooling, medical equipment and laboratory instrument. Wholesale & OEM custom Peltier cooling element supplier. 🟧 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
🔷Product Drawing

🔷Basic Performance Spec
| Product Model | Chip | Max Temp Difference | Internal Resistance | Max Voltage | Max Current | Max Power | Dimensions |
|---|---|---|---|---|---|---|---|
| Type mode | In APE | ΔTmax (°C) | ACR (Ω) | Umax (V) | Imax (A) | Pmax (W) | Size (mm) |
| TEC1-12708 | K10 | 60 | 40×40×3.4 | ||||
| K12 | 65 | 1.48 | 15.2 | 8 | 122 | 40×40×3.6 | |
| K14 | 70 | 40×40×3.8 |
🔷Basic Performance Spec
| Item | Specification |
|---|---|
| Substrate | 96% Alumina 0.76mm + Oxygen‑free Copper 0.4mm (sintered process) |
| Lead Wire | Super‑soft silicone wire 18AWG / L=200mm |
| Terminal | Standard product without terminal (can be installed upon request) |
| Assembly Pressure | 4kg (0.25kg/cm²) |
| Packaging Standard | Polystyrene (PS) foam box |
| Sealing Compound | 704 silicone rubber sealant |
| Maximum Temperature Resistance | Tin‑tin* eco‑friendly solder, melting point 138°C |
| Storage Environment | Temperature <120°C, Humidity <60% Rh |
🔷 Performance Curve

🔷 Product Overview
Our TEC1‑12708 Thermoelectric Cooler 40*40mm is a classic high‑power Peltier Cooling Element module. This thermoelectric cooler adopts premium semiconductor thermoelectric grains and high‑thermal‑conductivity ceramic substrate, delivering stable cooling performance and high temperature difference.
As a widely‑used thermoelectric cooling element, this 40×40mm peltier cooling element can convert electric energy into cold and heat directly, without refrigerant, vibration or noise.
We are a reliable Peltier Cooling Element manufacturer, supporting wholesale thermoelectric cooler, OEM and custom‑made service for different cooling projects.
🔷 Product Features
🔷Product Applications
This TEC1‑12708 thermoelectric cooler 40*40mm Peltier Cooling Element fits for multiple temperature‑control scenarios:
✅ Thermoelectric cooling for industrial chiller
✅ Peltier cooling element for laser cooling, laser module temperature control
✅ Semiconductor temperature control for electronic components
✅ Peltier refrigeration element for laboratory instrument, lab cooling platform
✅ Medical equipment cooling, beauty device cooling plate
✅ Small‑size refrigerators, wine coolers, air dehumidifiers, cooling cabinets
✅ Industrial testing equipment, battery thermal management system
🔷 Product Structure

🔷Operation Principle
The working principle of the Peltier Cooling Element follows the Peltier effect. When direct current flows through the thermoelectric cooling element, heat will be absorbed on one ceramic surface (cold side) and released on the opposite surface (hot side).
You will get continuous cooling effect on the cold side while the hot‑side heat must be dissipated by a heat sink. If you reverse the DC current direction, the cold side and hot‑side will swap, so the module can be used for heating. It is a solid‑state semiconductor temperature control solution without compressors.
🔷FAQ
Q1: What is a TEC1‑12708 Peltier Cooling Element?
A: TEC1‑12708 is a 40*40mm high‑power thermoelectric cooler peltier cooling element, widely used for active temperature control, cooling or heating.
Q2: Can you supply OEM custom Peltier cooling element service?
A: Yes, we are a Peltier Cooling Element manufacturer. We support wholesale thermoelectric cooler, bulk‑order and OEM custom solutions including wire length, sealing, voltage and size modification.
Q3: Does this thermoelectric cooling element need a heat sink?
A: Definitely yes. A matched heat sink is required for the hot side. Without proper heat dissipation, the peltier cooling element will overheat and burn out quickly.
Q4: Can this 40*40mm Peltier module work for laser cooling?
A: Yes, TEC1‑12708 thermoelectric cooler is a popular choice for laser cooling and semiconductor temperature‑control projects.
Q5: Do you have waterproof Peltier cooling element options?
A: We can provide waterproof sealing treatment for this thermoelectric cooler upon customer’s request.
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