The TEC1-04903 is a 30x30mm standard-size semiconductor cooling module designed for a low current of 3A, with a maximum temperature difference of approximately 65–70°C and a cooling capacity of approximately 12–15W. 🟧 Price List Contact Customer Service 🟦 Certifications Contact Customer Service ⬜ Product PDF Spec 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
🔷Peltier Element Cooler Product Drawing

🔷Thermoelectric Devices Basic Performance Spec
| Type Model | Chip | ΔTmax (°C) | ACR (Ω) | Umax (V) | Imax (A) | Pmax (W) | Size (mm) |
|---|---|---|---|---|---|---|---|
| TEC1-04903 | K20 | 60 | 1.51 | 5.8 | 3 | 17 | 30×30×4.4 |
| TEC1-04903 | K30 | 65 | 1.51 | 5.8 | 3 | 17 | 30×30×5.4 |
| TEC1-04903 | K40 | 70 | 1.51 | 5.8 | 3 | 17 | 30×30×6.4 |
🔷Thermal Generators Additional Performance Spec
| Parameter | Specification |
|---|---|
| Substrate | 96% alumina 0.76mm + oxygen‑free copper 0.4mm, sintered process |
| Lead Wire | Ultra‑soft silicone wire, 22 AWG, L=200mm |
| Terminals | Not included as standard; can be installed upon request |
| Mounting Pressure | 2.3 kg (0.25 kg/cm²) |
| Packaging | Polystyrene (PS) foam box |
| Sealant | 704 silicone rubber |
| Max. Temperature Resistance | Tin‑lead solder, melting point 138°C |
| Storage Conditions | Temperature < 120°C, Humidity < 60% RH |
🔷Thermoelectric Controller Performance Curve

🔷Peltier Elements Product Overview
The TEC1-04903 is a 30x30mm standard-size semiconductor cooling module designed for a low current of 3A, with a maximum temperature difference of approximately 65–70°C and a cooling capacity of approximately 12–15W. This product is noise-free, vibration-free, and maintenance-free, and can switch between cooling and heating modes by reversing the current direction. With low power consumption and minimal heat generation, it is suitable for precision temperature control applications with extremely stringent power consumption and space requirements, such as micro-medical devices, precision sensors, and small lasers.
🔷Thermoelectric Cooling Devices Product Show



The TEC1-04902 is a 30x30mm standard-size semiconductor cooling module designed for a low current of 2.2A, with a maximum temperature difference of approximately 65–70°C and a cooling capacity of approximately 8–10W. 🟧 Price List Contact Customer Service 🟦 Certifications Contact Customer Service ⬜ Product PDF Spec 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
The TEC1-04904 is a standard 30x30mm semiconductor cooling module designed for a 4A current, with a maximum temperature difference of approximately 65–70°C and a cooling capacity of approximately 15–18W. 🟧 Price List Contact Customer Service 🟦 Certifications Contact Customer Service ⬜ Product PDF Spec 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
The TEC1-04905 is a 30x30mm standard-size semiconductor cooling module designed for a 5A current, with a maximum temperature difference of approximately 65–70°C and a cooling capacity of approximately 20–25W. 🟧 Price List Contact Customer Service 🟦 Certifications Contact Customer Service ⬜ Product PDF Spec 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
The TEC1-04906 is a 30x30mm standard-size semiconductor cooling module designed for a 6A current, with a maximum temperature difference of approximately 65–70°C and a cooling capacity of approximately 25–30W. 🟧 Price List Contact Customer Service 🟦 Certifications Contact Customer Service ⬜ Product PDF Spec 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
The TEC1-04908 is a 30x30mm standard-size semiconductor cooling module designed for an 8A current, with a maximum temperature difference of approximately 65–70°C and a cooling capacity of approximately 35–40W. 🟧 Price List Contact Customer Service 🟦 Certifications Contact Customer Service ⬜ Product PDF Spec 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
The TEC1-04910 is a 30x30mm standard-size semiconductor cooling module designed for high current (10A), with a maximum temperature difference of approximately 65–70°C and a cooling capacity of approximately 40–45W. 🟧 Price List Contact Customer Service 🟦 Certifications Contact Customer Service ⬜ Product PDF Spec 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
The TEC1-04912 is a 30x30mm standard-size semiconductor cooling module designed for high current (12A), with a maximum temperature difference of approximately 65–70°C and a cooling capacity of up to approximately 45–50W. 🟧 Price List Contact Customer Service 🟦 Certifications Contact Customer Service ⬜ Product PDF Spec 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
The TEC1-07101 is a standard 30x30mm semiconductor cooling module designed for ultra-low current operation at 1.4A, with a maximum temperature difference of approximately 65–68°C and a cooling capacity of approximately 8–10W. 🟧 Price List Contact Customer Service 🟦 Certifications Contact Customer Service ⬜ Product PDF Spec 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