Thermoelectric Cooling Module TM 31-1.0-4.0

TM 31-1.0-4.0 Thermoelectric Cooling Module
Specifications with Thot = 27°С

Part Number





Dimensions (mm)
L x W x H

TM 31-1.0-4.0





15 x 15 x 3.6


TM 31-1.0-4.0 is a general purpose single-stage thermoelectric module, with mid-range cooling capacity in the 15 x 15 mm footprint. Slightly more powerful than the 3-amp version of this module, TM 31-1.0-4.0 provides roughly 20% more cooling capacity with the ability to cool or stabilize slightly greater loads.

TM 31-1.0-4.0 may be used for cooling, heating and thermal stabilization and is employed in a wide range of applications including including medical, analytical, laboratory & scientific instruments, electro-optics, telecommunications and military. A version for thermal cycling is available.

In electro-optic and photonic applications, TM 31-1.0-4.0 is commonly used to maintain a constant temperature in order to stabilize the wavelength of a diode, detector or sensor.


Comprehensive Specifications (Hot-Side Temperature 27 °C)

Imax = 3.9 Amps (Imax is the maximum current at ΔTmax)

Vmax = 3.8 Volts (Vmax is maximum voltage at ΔTmax)

Qcmax = 8.6 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 = 0.85Ω ± 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: 22 AWG, Tin (Sn) plated at module interface, with a maximum temperature of +105 °C
(Other wiring options available.)

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

Maximum recommended compression: 1MPa

A version for thermal cycling is available

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

Options & Designations (Suffix):
(for example: TM 127-1.0-3.0 "EL")

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


click drawing for enlargement

TM 31-1.0-4.0 Drawing  

Dimensions in mm


Useful Links


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


Supplemental Information