TM 127-1.4-8.5 TEC

TM 127-1.4-8.5
ElectraCOOL™ Thermoelectric Module

Specifications with Thot = 27°С

Part Number





Dimensions (mm)
L x W x H

TM 127-1.4-8.5





40 x 40 x 3.45


TM-127-1.4-8.5 is a general purpose workhorse. With 78 watts of cooling capacity, it’s our most powerful 40 x 40 mm single-stage thermoelectric module. Typically this module is powered by a 12V DC power source but can accommodate a 15V supply.

Known by our techs as “The Beast,” TM-127-1.4-8.5 can move a lot of heat but also may send a lot of heat to the “hot-side.” A great choice for applications with a (cooled) liquid heat-sink or a capable forced convection heat-sink. Frequently selected by semiconductor fabs for use in liquid-to-liquid applications.

May be used for cooling, heating and temperature stabilization in a wide range of applications including refrigeration, consumer goods, medical, analytical, laboratory & scientific instruments, chillers, telecommunications, electro-optics, industrial and military. A version for thermal cycling is available.

Operating temperature range: -50 °C ~ +200 °C

Available in strings from 2-12 modules long and with metalized (and tinned) surfaces.

* This module is typically selected for thermoelectric power generation applications, with temperatures up to 200 °C.


Comprehensive Specifications (Hot-Side Temperature 27 °C)

Imax = 8.5 Amps (Imax is the maximum current at ΔTmax)

Vmax = 16 Volts (Vmax is maximum voltage at ΔTmax) Typically used in 12V nominal applications

Qcmax = 78 Watts (Qcmax is maximum cooling capacity at Imax, Vmax and ΔT = 0 °C)

ΔTmax = 70 °C (ΔTmax is maximum temperature difference at Imax, Vmax and Qc = 0W)

Internal resistance = 1.50 Ω ± 10% as measured by AC 4-terminal method at 25 °C

Operating temperature range: -50 °C ~ +200 °C (Solder melting point: +235 °C)

Thickness tolerance: ± 0.025mm. Flatness and parallel variance: ± 0.05mm
(Lapping available to ± 0.01mm for multi-module apps.)

Standard lead wires: 20 AWG, Tin (Sn) plated at module interface, with a maximum temperature of +105 °C
(Other wiring options available.)

Maximum recommended compression: 1MPa

Ceramics: Alumina (AL2O3) - Available with metalized and tinned surfaces

Available in strings of 2-12 modules

A version for thermal cycling is available

The lot number is printed on the center of the cold-side

RoHs Compliant

Options & Designations (Suffix):
(for example: TM 127-1.4-8.5 "EL")



click drawing for enlargement

TM 127-1.4-8.5 Drawing

Dimensions in mm


Useful Links


Please contact us for a quotation at sales@electracool.com or (603) 888-2467


Performance Curves (click image for enlargement)

Thermoelectric module performance curves are graphical representations showing the relationships between power applied and net cooling for a specific TE module.

Performance curves are valuable tools for quickly determining if a TE module is a suitable COOLER for an application; learning what power is required for an appropriate module to reach the desired temperature and heat pumping capacity; and to provide the basic information necessary for proper assembly design.

Curves with Th = 27 °C indicate what to expect operating a well designed, fan cooled, assembly in ambient temperatures around 20 °C (70 °F) with an operational "hot-side" temperature or Th about 7 °C above ambient.

Curves with Th = 50 °C indicate performance expectations from assemblies with limited heat-sinking space and hot-side temperatures about 30 °C above ambient. This curve is also helpful for outdoor, box-in-box, and other applications with (relative) ambient temperatures in the 40-50 °C range.


Try one ElectraCOOL™ TM 127-1.4-8.5 TEC for $25 *delivered
Share a current P.O. for similar TE Modules from a major competitor and try a free sample on us!
*Free shipping included in USA only


Toll free in North America: 1 866.665.5434

International: 603.888.2467