Buy high‑quality TEC1‑09103 thermoelectric cooler 40*40mm, industrial‑grade TEC peltier module. Suitable for laser cooling, medical equipment, laboratory refrigeration, semiconductor temperature control. OEM & wholesale custom TEC thermoelectric cooling chip available from our 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

| Type Model | In APE | Max Temp Diff. ▲Tmax (°C) | Internal Resistance ACRohm (Ω) | Max Voltage Umax (V) | Max Current Imax (A) | Max Power Pmax (W) | Size (mm) |
|---|---|---|---|---|---|---|---|
| TEC1-09703 | K20 | 60 | 3.12 | 12 | 3 | 36 | 40x40x4.4 |
| K30 | 65 | 3.12 | 12 | 3 | 36 | 40x40x5.4 | |
| K40 | 70 | 3.12 | 12 | 3 | 36 | 40x40x6.4 |
| Parameter | Specification |
|---|---|
| Substrate Specification | 96% Alumina (Al₂O₃) 0.76 + Oxygen-Free Copper 0.4 sintering process |
| Lead Wire Specification | Special soft silicone wire 22AWG / L=200mm |
| Terminal Specification | Standard products have no terminals; can be added upon request |
| Assembly Pressure | 4kg / (0.25kg/CM²) |
| Packaging Standard | Polystyrene (PS) foam box packaging |
| Sealing Material | 704 silicone rubber seal |
| Max Temperature Resistance | Bismuth-tin (Bi-Sn) environmentally friendly solder, melting point 138°C |
| Storage Environment | Temperature < 120°C, Humidity < 60%Rh |

TEC1‑09103 Thermoelectric Cooler 40*40mm is a high‑power TEC peltier element. As one popular TEC thermoelectric cooling chip, this 40×40mm thermoelectric cooler transfers heat by the peltier effect, achieving fast active cooling and precise temperature control. Our 40x40 TEC thermoelectric cooler belongs to industrial‑grade TEC module, widely supplied as bulk TEC cooling module for wholesaler, OEM and custom‑made cooling projects.
This TEC1‑09103 thermoelectric cooler 40*40mm can be used in many cooling scenarios:

This TEC peltier module works based on the Peltier effect. When DC current flows through the TEC thermoelectric cooling chip, one ceramic side absorbs heat and becomes cold, the opposite side releases heat and turns hot. By reversing the DC current direction, the cooling side and heating side can be swapped. It is an efficient solid‑state solution for active temperature control without compressors.
A: Yes, samples are available. We are a professional TEC thermoelectric cooler supplier, we support sample testing before wholesale TEC peltier module & bulk purchase.
A: Custom service including wire length, connector, ceramic modification and special parameter OEM is acceptable. Contact us for custom drawing review.
A: A high‑performance heat sink with sufficient airflow is strongly recommended. Good heat dissipation is critical to reach the max temperature difference of this high‑power TEC thermoelectric cooler.
A: Absolutely. This industrial‑grade TEC thermoelectric cooling module is widely used for laser cooling, medical device constant‑temperature control and laboratory refrigeration.
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