SP1848-27145 Peltier Thermoelectric Cooler for CPU Cooling, Refrigeration, DIY Projects 40*40mm 120℃

SKU: FA2059
Model Number

SP1848-27145
Dimensions

40mm x 40mm x 3.4mm
Max Temperature

120°C
Open Circuit Voltage

4.8V (at ΔTof 80°C)
Load Current

669mA (at ΔTof 80°C)
Internal Resistance

1.8 ~ 2.2Ω
Material

Bismuth Telluride (Bi2 Te3)
Lead Wire

~300mm Heat-Resistant Teflon Coated
Color

White
Product Description
The SP1848-27145 is a specialized thermoelectric module engineered for high-performance thermal management and energy harvesting. While standard TEC modules are limited by lower temperature thresholds, the SP1848 series is designed to operate reliably at temperatures up to 120°C. This makes it an exceptional choice for demanding CPU cooling, industrial refrigeration, and high-heat DIY projects.
In addition to its cooling capabilities (Peltier Effect), this module is highly optimized for Thermoelectric Power Generation (Seebeck Effect). By applying a temperature difference across its ceramic plates, it can convert waste heat directly into usable DC electricity. Its internal structure is reinforced with high-purity semiconductor material to ensure consistent performance under thermal cycling, making it a versatile component for green energy research and precision thermal engineering.
Key Features
  • Dual-Function Technology: Functions as a high-precision cooler when powered, or as a solid-state power generator when exposed to a temperature gradient.
  • High-Temperature Tolerance: Specially formulated to withstand operating environments up to 120°C without degradation.
  • Superior Thermal Insulation: Optimized internal couples provide an excellent thermal barrier, preventing heat “back-leak” during cooling operations.
  • Solid-State Reliability: No moving parts or mechanical wear, ensuring silent operation and a long, maintenance-free lifespan.
  • Precision Manufacturing: Features flat, parallel ceramic plates for maximum surface contact and efficient heat transfer.
  • Eco-Friendly: Fully RoHS compliant; operates without refrigerants or ozone-depleting chemicals.
Usage & Applications
  • CPU & Electronics Cooling: Active thermal management for high-performance processors and high-speed networking hardware.
  • Waste Heat Recovery: Converting heat from industrial pipes, automotive exhausts, or stovetops into electricity to power small sensors or LEDs.
  • Precision Refrigeration: Core component for portable medical chillers and temperature-stabilized laboratory equipment.
  • Green Energy Education: Ideal for STEM kits demonstrating the direct conversion of heat to electricity.
  • Aerospace & Defense: Thermal stabilization for sensitive infrared sensors in high-altitude environments.
Q: Can I use this module to generate electricity?

Yes. Unlike standard TEC1 modules, the SP1848 is specifically optimized for power generation. If you keep one side cold (with a heatsink/fan) and the other side hot, it will produce a DC voltage

Q: Do I need a heatsink if I am using it for cooling?

A: Yes, absolutely. You must never apply power to the module without a high-quality heatsink and fan attached to the hot side. Without efficient heat dissipation, the module will overheat and fail permanently within seconds.

Q: How do I identify the hot and cold sides?

Generally, the side with the model number printed on it is the cold side when used as a cooler. When used for generation, the printed side should face the heat source.

Q: Is thermal paste required?

Yes. To ensure proper thermal coupling, a thin, even layer of high-quality thermal grease (TIM) must be applied to both sides of the module before assembly

Q: What is the benefit of the 120°C rating?

Standard Peltier modules often fail when the hot side exceeds 70-80°C. The SP1848’s 120°C rating provides a wider safety margin and allows it to be used in high-heat applications like industrial harvesting or high-wattage CPU chilling

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