1. Thermoelectric Peltier Device's Product Overview
Model No.: TEC1-127-08
Dimension: 40×40mm (Standard Square)
Brand: KKG inc
Core Feature: Challenge Minus 50℃ Deep Cooling
Customization Support: Various Specifications | Customizable | Free Sample Available
Product Type: Standard Single-Stage Thermoelectric Cooler (Peltier Module)
2. Product Structure of Peltier Device Cooler

The TEC1-127-08 40×40mm Peltier cooler adopts a mature, high-reliability stacked structure, with 127 pairs of N-type and P-type semiconductor thermocouples as the core, encapsulated between two high-insulation, high-thermal-conductivity ceramic substrates (Al₂O₃).
Solid State Cooler's Key Structural Components:
| Component | Material & Function |
|---|
| Ceramic Substrates | High-purity alumina (Al₂O₃) ceramic, providing electrical insulation, mechanical protection, and uniform heat distribution for both cold and hot sides. |
| Semiconductor Thermocouples | 127 pairs of high-performance Bi₂Te₃-based N/P-type semiconductor pellets, the core unit that generates the Peltier effect for heat transfer. |
| Conductive Copper Bridges | High-purity oxygen-free copper, connecting semiconductor pellets in series to form a complete circuit, ensuring low resistance and high current transmission efficiency. |
| Lead Wires | Red (positive) and black (negative) high-temperature-resistant insulated wires, for power input, with standard length for easy soldering and wiring. |
| Encapsulation Layer | High-temperature-resistant epoxy resin, sealing the internal structure to prevent moisture, dust, and oxidation, ensuring long-term stability in harsh environments. |
Structural Visual Features:
- The cold side (left in the image) is a smooth white ceramic surface, used for direct contact with the object to be cooled.
- The hot side (right in the image) exposes the internal copper bridge and semiconductor pellet array, requiring a matching heat sink for heat dissipation.
- The 40×40mm standard size is compatible with most universal heat sinks and cooling systems, with high interchangeability.
4. Product Advantages of Thermoelectric Peltier Device
4.1 Core Performance Advantages of Thermo Electric
- Ultra-Low Cooling Capacity: Achieves a maximum temperature difference of up to 68℃, with the cold side capable of reaching -50℃ under standard heat dissipation conditions, meeting deep cooling requirements for various applications.
- High Reliability & Long Lifespan: Adopts high-purity Bi₂Te₃ semiconductor materials and mature packaging technology, with a service life of over 100,000 hours, no moving parts, zero wear, and low failure rate.
- Fast Response & Precise Control: The thermoelectric effect has an extremely fast response time (millisecond level), enabling rapid temperature adjustment and precise temperature control with an accuracy of ±0.1℃, suitable for precision temperature control scenarios.
- Solid-State & Silent Operation: No compressor, no refrigerant, no mechanical vibration, and zero operating noise, meeting the strict noise requirements of medical, laboratory, and consumer electronics.
4.2 Structural & Application Advantages of thermoelectric peltier
- Standard 40×40mm Size: Universal square dimension, compatible with most off-the-shelf heat sinks, water cooling blocks, and mounting structures, reducing design and procurement costs.
- Wide Compatibility: Supports 12V standard DC input, easy to integrate with power supplies, controllers, and embedded systems.
- Customization Flexibility: KKG provides full customization services, including size adjustment, voltage/current optimization, lead length modification, and special packaging for harsh environments.
- Free Sample Support: Available for free sample testing to verify performance in customer-specific applications before mass production.
- Environmental Friendliness: No Freon or other harmful refrigerants, fully compliant with RoHS and environmental protection standards.
4.3 Manufacturing Advantages (KKG inc)
- 10+ years of R&D and production experience in thermoelectric modules, with a 15,000㎡ factory and 100+ skilled workers.
- Monthly production capacity of 600,000+ pieces, ensuring stable supply for mass orders.
- Strict quality control system, with 100% performance testing before delivery, ensuring consistent product quality.
5. Product Applications of Peltier Device

The TEC1-127-08 40×40mm Peltier cooler is a universal high-performance thermoelectric module, widely used in various industries requiring precise cooling and temperature control:Consumer Electronics,Industrial & Automotive,Medical & Laboratory,Industry Equipment......