Thermoelectric Cooling Module TM 71-1.4-8.5

TM 71-1.4-8.5 Thermoelectric Cooling Module

Specifications with Thot = 27 °С

Part Number





Dimensions (mm)
L x W x H

TM 71-1.4-8.5





30 x 30 x 3.45


TM 71-1.4-8.5 is a popular multi-purpose single-stage thermoelectric module with a 30 x 30mm footprint. It is intended for use from 5 to 8 Volt DC power sources and although it doesn’t have the greatest Qmax in this configuration, it’s a solid performer. TM 71-1.4-8.5 can be used with a very wide variety of economical extruded heat-sinks without the hot-side temperature becoming unreasonably high. It’s also frequently used in strings.

Typically used in instruments and electro-optic or photonic applications, TM 71-1.4-8.5 is often used to maintain a constant temperature however, it may be used for cooling, heating and thermal stabilization. It's employed in a wide range of civilian and military applications. A thermal cycling version is available.

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

Available with metalized and tinned surfaces.


Comprehensive Specifications (Hot-Side Temperature 27 °C)

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

Vmax = 8.8 Volts (Vmax is maximum voltage at ΔTmax)

Qcmax = 43.1 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 = 0.85 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 (Lapping to ± 0.01mm for multi-module apps available.)
Flatness and parallel variance: ± 0.05mm

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)
Metalized (and tinned) surfaces available

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

Options & Designations (Suffix):
(for example: TM 71-1.4-8.5 "EL")

Comply with ROHS (Restriction of Hazardous Substances) and 2006/122/EC - PFOS (PerFluoroOctane Sulfonates)


click drawing for enlargement

TM-31-1.4-8.5 Drawing

Dimensions in mm


Useful Links


Please contact us for a quotation. or (603) 888-2467.


Supplemental Information