Thermoelectric Cooling Module TM 31-1.0-3.0

TM 31-1.0-3.0 Thermoelectric Cooling Module
Specifications with Thot = 27°С

Part Number





Dimensions (mm)
L x W x H

TM 31-1.0-3.0





15 x 15 x 3.8


With a Qcmax of 7.3 watts (Th 27 °C), TM 31-1.0-3.0 is our least powerful single-stage thermoelectric module, in the 15 x 15 mm footprint and is typically operated with a 3.3V DC power source.

TM 31-1.0-3.0 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 31-1.0-3.0 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 = 3.0 Amps (Imax is the maximum current at ΔTmax)

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

Qcmax = 7.3 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 = 1.0 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: 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-31-1.0-3.0 Drawing  

Dimensions in mm


Useful Links


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


Supplemental Information