High‑quality TEC1‑12705 40*40mm thermoelectric cooler, reliable thermoelectric cooling device for industrial chiller, laser cooling & semiconductor temperature control. We supply wholesale & OEM custom thermoelectric cooling device module. 🟧 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 |
|---|---|---|---|---|---|---|---|
| In APE | ΔTmax (°C) | ACR (Ω) | Umax (V) | Imax (A) | Pmax (W) | Size (mm) | |
| TEC1-12705 | K10 | 60 | 2.37 | 15.2 | 5 | 76 | 40×40×3.4 |
| K16 | 65 | 40×40×4.0 | |||||
| K22 | 70 | 40×40×4.6 |
🔷 Additional Performance Spec
| Item | Specification |
|---|---|
| Substrate | 96% Alumina 0.76mm + Oxygen‑free Copper 0.4mm (sintered process) |
| Lead Wire | Super‑soft silicone wire 20AWG / 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 | Bismuth‑tin eco‑friendly solder, melting point 138°C |
| Storage Environment | Temperature <120°C, Humidity <60% Rh |
🔷 Performance Curve

🔷 Product Overview
Our TEC1‑12705 Thermoelectric Cooler 40*40mm is a compact‑size thermoelectric cooling device module built‑in high‑quality bismuth‑telluride thermoelectric pellets. As a solid‑state thermoelectric cooling device thermoelectric cooler, it transfers heat from one ceramic side to another side without refrigerant, compressor or moving parts.
Different from large size 100x100 thermoelectric cooling device element, this 40×40mm TEC chip takes small installation space, perfect for medium‑power temperature‑control projects. We are a professional thermoelectric cooling device supplier, supporting wholesale thermoelectric cooling device and OEM thermoelectric cooling device module service for global buyers.
🔷 Product Features
🔷Product Applications
This TEC1‑12705 thermoelectric cooling device is widely used for:
✅ Thermoelectric cooling device for industrial chiller
✅ Thermoelectric cooling device for laser cooling
✅ Small‑size semiconductor temperature control equipment
✅ Medical constant‑temperature instrument
✅ Laboratory cooling & heating platform
✅ Mini refrigeration cabinet, beverage cooler, beauty cooling equipment
✅ Electronic component heat dissipation
🔷 Product Structure

🔷Operation Principle
This thermoelectric cooling device runs on the Peltier effect. When DC current flows through the thermoelectric cooler module, heat will be absorbed on one ceramic surface (cold side) and released on the opposite ceramic surface (hot side). By reversing the DC current direction, the cold and hot sides will swap, so the thermoelectric cooling device can realize both cooling and heating function for semiconductor temperature control. A matched heat sink is required to take away heat from the hot side during continuous operation.
🔷FAQ
Q1: Can I get this TEC1‑12705 thermoelectric cooling device by wholesale order?
A1: Yes, we are a reliable thermoelectric cooling device supplier, we support wholesale thermoelectric cooling device with competitive bulk price.
Q2: Can you provide OEM thermoelectric cooling device module service?
A2: OEM service is available, we can offer custom thermoelectric cooling device cooling plate, different wire length, surface treatment according to your drawings.
Q3: Is this 40*40mm thermoelectric cooler suitable for laser cooling?
A3: Yes, this thermoelectric cooling device for laser cooling is a very common solution for small laser module temperature stabilization.
Q4: What power supply do I need for TEC1‑12705?
A4: Recommended DC power: 12V‑15V, maximum working current 5A. Constant‑current power supply is suggested for better semiconductor temperature‑control effect.
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