Kyocera New Peltier Module Has Better Cooling Rate

Kyocera Corporation has introduced a new Peltier (thermoelectric) module with improved heat absorption.

Particularly, the new Peltier module has a maximum heat absorption rate*1 21% higher than Kyocera’s conventional products. Accordingly, this enables dramatically enhanced cooling performance. Primarily, Kyocera’s Peltier modules apply to temperature control of automotive batteries and seats. Thus, this improvement in cooling performance will contribute to battery longevity.

As of June 2024, the company has shipped a total of 32 million units for automotive applications. It will continue to supply components that support the growth of the automotive industry.

Kyocera’s Peltier Module (Width 40mm × Depth 40mm × Height 2.17mm)

About Peltier Modules

A Peltier module is an energy conversion device with semiconductor elements sandwiched between copper substrates. When electricity passes through, one side of the substrate absorbs heat (cooling), while the other side releases heat (heating). This allows for rapid changes in surface temperature between heating and cooling, as well as the ability to adjust or maintain a specific temperature.

Features of Kyocera’s Peltier Module

High Heat Absorption

Kyocera’s Peltier modules stand out due to their unique element technology (single crystal growth technology), which enables high heat absorption. Advances in this technology enable the maximum heat absorption capacity to rise 21% compared to Kyocera’s conventional products. Particularly, the new Peltier module can absorb heat more efficiently, thereby enhancing cooling performance.

Comparison of Heat Absorption between Conventional and New Products

High Responsiveness

Faster heating and cooling, in combination with a copper plate that provides high thermal conductivity, allow more rapid temperature-control response.

High Reliability

Kyocera prioritizes the reliability of Peltier modules. Primarily, it coats the element sides with resin to protect them from corrosion due to condensation. Moreover, the entire process, from development to manufacturing and shipping, is handled at its facilities in Japan. Thus, it guarantees the highest quality control standards and instills confidence among customers.


Kyocera’s Peltier module is highly customizable with temperature-sensing thermistors and/or heat dissipation fins. The company can also accommodate size adjustments to match the customer’s application and casing requirements, providing a versatile solution for a wide range of automotive and other temperature control needs.

*1 Maximum Heat Absorption (Qcmax) refers to the amount of heat absorbed by the Peltier module when operated at maximum current. It is defined as the temperature difference between both ends of the thermoelectric semiconductor being 0°C.

-11 July 2024-