TEC Microsystems - Miniature Thermoelectric Coolers and Sub-Assemblies

ISO9001:2015 Certified

Solid-state heatpumps, thermoelectric modules, thermoelectric coolers, Peltier elements or simply TECs - all these names refer to a device based on the Peltier-effect. TEC Microsystems GmbH is in a position to offer world widest range of miniature thermoelectric coolers for laser and optoelectronics applications. There are more than 5000 types of thermoelectric coolers available. Cold sides range from 1x1mm² to 18x18 mm² in most cases,  dTmax - from 70°C in single stage up to 130°C in multi-stage configurations (specified at 27°C, vacuum).

Depending on size and performance all TE coolers are divided into several general Series. Please, select the Series below for detailed info and a list of standard thermoelectric cooler types.  There are more than 5000 different TE coolers in our manufacturing range, about 2000 standard thermoelectric coolers and additionally more than 3000 various modifications and customized solutions. We recommend to submit a request to get a quick reply with the optimal TEC type for your application.



◻︎ Dimensions: 1.0x1.0mm2 .. 18x18mm2

◻ Single- and Multistage TE Coolers

◻ Up to 40W per cm2 cooling power density

◻ Regular and HD assembly technologies

◻ Advanced Bi-Te material properties

◻ RoHS compliant

◻ Laser Diodes and Superluminescent Diodes

◻ X-Ray and IR- Sensors

◻ Photodetectors and Photomultipliers     

◻ Avalanche Photodiodes (APD)

◻ Focal Plane Arrays (FPA)

◻ Charge Couple Devices (CCD)


MC06 Series

Classical miniature thermoelectric coolers, single- and multistage types, based on regular assembly technology.

ML06 Series

Single-stage only TE coolers for DWDM projects. Elongated shape to fit into typical 14pin "Butterfly" or DIL packages.

MD03 Series

Advanced miniature single- and multistage thermoelectric coolers with Advanced HD pellets placement technology.

MDL06 Series

Advanced TECs with HD Technology, the analogs of ML06 Series, single-stage TECs with up to 100% higher cooling capacity, optimized for DWDM packages.

MDX Group

Special 2-stage thermoelectric coolers with HD technology, increased cooling capacity and large cold side for detector applications.

MDD Group

Very special thermoelectric cooling solutions with Ultra-HD pellets placement technology, the highest possible TEC cooling power density.


Send us your key application requirements and get a quick reply with the most optimal TEC

MDC Group

"Out-of-pyramide" advanced 3-stage thermoelectric coolers with the same size of top and bottom ceramics.

MX Group

Special thermoelectric coolers with a mixed serial-parallel connection between pellets inside, optimal current-voltage ratio.

MD10 Series

The "heavy-duty" TECs, these analogs of MC10 Series by dimensions have up to 100% higher cooling capacity.

MD02 Series

Ultra-miniature single-stage TE coolers with Super-HD pellets placement technology, ideal for TOSA applications.

MC10 Series

Powerful thermoelectric coolers, the largest types among our standard miniature TEC solutions. Single- and multistage TECs.

MC04 Series

Classical miniature thermoelectric coolers, single- and multistage types, based on regular assembly technology.

TE Coolers with holes

The group of thermoelectric coolers with single of multiple holes for "external cooling" - optimal for applications with TO-46, TO-56, TO-9 headers.


There is a simple and quick way to find the optimal thermoelectric cooler for your application. Simply send us the key requirements and get a quick reply with a suggested optimal TEC, detailed  specification and precise estimations of TEC power consumption under your conditions.



For all our thermoelectric coolers there is range of standard manufacturing options available: ceramics material, surface plating, terminal connection type, protective sealing, thermistor mounting and some other options. Check the quick introduction below to get more info.

1MA10 Aluminium TECs

Unique fusion of thermoelectric cooler assembly technologies - TECs with Aluminium plates instead of ceramics.  More than 100W of cooling power, 30W/cm2.

MD06 Series

Advanced powerful miniature single- and multistage thermoelectric coolers with HD pellets placement technology.

MD04 Series

Miniature thermoelectric coolers with HD (high-density) pellets placement technology, single- and multistage types.

ML07 Series

Direct analogs of ML06 TEC Series by dimensions, single-stage  TE coolers with extra 35-40% cooling capacity reserve for DWDM projects.


Quick on-line search among standard TEC types available.  Find the optimal type by yourself






Customized TEC development

Customized thermoelectric coolers development is our specialty. From slight modification of existing TECs to a complete development of entirely new thermoelectric coolers.