The standard Peltier coolers manufactured by SCTB NORD includes single-stage (ТМ) and multistage thermoelectric modules (2ТМ, 3ТМ, 4ТМ series).
Thermoelectric modules are produced with application of the following technologies:
advanced polycrystalline thermoelectric materials with high mechanical strength obtained using the powder metallurgical technique
thermoelectric materials properties optimized for Peltier modules work within the certain temperature range
patented technology for the manufacture of Peltier elements with elastic glue layers to avoid mechanical stress caused by temperatures gradients in operating modules
designed and implemented technology of multilayer antidiffusion barriers resistant to thermal stresses
gold-plated semiconductor thermoelectric dices to avoid thermoelectric module soldering defects
thermoelectric modules soldered using low active rosin fluxes with minimum ion component concentrations for enhanced corrosion resistance of modules
precise lapping ensuring high quality, flatness and parallelism of Peltier modules' working surfaces to enable a good thermal contact with the cooled object and the heat dissipation system
6-stage washing with a variety of solvents to remove residual flux and ensure corrosion resistance of thermoelecric coolers
module quality control at all production stages, regulated by the Quality Assurance Program (basic level)
usage of components that have been approved for production by EU RoHS Directive.
Single-stage thermoelectric modules provide for a maximum temperature difference of up to 73оС between the hot and cold sides.
The required thermoelectric module types are selected from the General Specification or from the Table given below, based on the marking ТМ-ААА-ВВ-СС М, where:
TM - thermoelectric module
AAA - number of thermocouples
BB - dice cross section, mm
CC - current at maximum temperature difference ΔTmax, А
М - modules manufactured using the patented glue layer technology
Imax- current consumption at maximum temperature difference(ΔTmax), A Umax- voltage suppliedat maximum temperature difference(ΔTmax), V Qcmax -maximum cooling capacity at Imax and ΔT = 0 °C, W ΔTmax- maximum temperature differenceat Imaх and Qc = 0, °C
*At the module hot side temperature Тhot=50 °С ΔTmax rises to 82-83 °C
Detailed characteristics of a Peltier cooler can be obtained by clicking the download corresponding to the module.
If you did not find thermoelectric module that meets your requirements, we are ready to design the one at your request.
At the customer's request, Pelrier modules with additional options may be manufactured:
Standard version
Additional options
Alumina ceramic substrates (Al2O3 96% or higher)
Ceramic substrates based on aluminum nitride (AlN)
Module soldering with tin-based high-temperature solders Тmelt ~ 232 оС
Module soldering with AuSn solder Тmelt= 280 оС
Resistance tolerance ± 10 %
Resistance tolerance ≤ ± 5%
Grouping of modules with resistance tolerance of no more than 0.004 Ohm
Heght tolerance no more than ± 0.02 mm
Height tolerance no more than ± 0.01 mm
Grouping of modules (by height)
Nonflatness no more than ± 0.02 mm
Nonflatness no more than ± 0.01 mm
Lead wires with PVC insulation
Lead wires with silicone or teflon insulation
Lead wires lenght 120 or 150 mm
Lead wires lenght in accordance with custmer requirements
Lead wires ends are tinned
Installation of Molex, Tyco Electronics or other connectors as requested by the customer
Modules may be connected in accordance with the customer requirements
Non-sealed modules
Silicone or epoxy sealing
If required temperature difference exceed of 50 °С two- or multistage thermoelectric modules ensure improved energy saving.
Multistage thermoelectric coolers provide for:
ΔTmax in vacuum for Thot=25 °С, °С
Number of stages
94
2
110
3
117
4
Two stage thermoelectric modules
The required Peltier module types are selected from the General Specification or from the tables given below, based on the marking Х ТМ-ААА-ВВ-ССМ, where:
Х - number of stages in a thermoelectric module
TM - thermoelectric module
AAA - number of thermocouples in the module's first stage
BB - number of thermocouples in the module's second stage
CC - current at maximum temperature difference ΔTmax, А
М - modules manufactured using the patented glue layers technology
Two stage module design example
TYPE
BASIC CHARACTERISTICS
DIMENSIONS, mm
Imax, A
Umax, V
Qcmax, W
ΔTmax, K
Cold side
Hot side
Height
2TM-127-31-5.0 M
5.0
15.5
17.0
95
40 x 40
40 x 40
11.7
2TM-127-63-6.5 M
6.5
16.0
35.0
86
40 x 40
40 x 40
7.5
Imax- current consumption at maximum temperature difference(ΔTmax), A Umax- voltage suppliedat maximum temperature difference(ΔTmax), V Qcmax -maximum cooling capacity at Imax and ΔT = 0 °C, W ΔTmax- maximum temperature differenceat Imaх and Qc = 0, °C
At the customer's request, modules may be manufactured with the additional options mentioned above.
Multistage thermoelectric modules are basically customized modules. Please contact SCTB NORD for all issues concerning the design and manufacture of such modules.
Basic applications of two- and multistage thermoelectric modules are:
industrial electronics and telecommunication systems
cooling systems for industrial and medical equipment
