TM2 30-15-2.8 (2-Stage) Thermoelectric Cooling Module

TM2 30-15-2.8
ElectraCOOL™ 2-Stage Thermoelectric Cooling Module

Part Number





Dimensions (mm)
Stage 1 L x W, Stage 2 L x W (total height)

TM2 30-15-2.8





30 x 30, 15 x 15 (7.2)


Great for cooling detectors…

TM2 31-15-2.8 In Hand

TM2 30-15-2.8 is a two-stage cascade style thermoelectric cooler with a ∆Tmax of 95 °C (∆Tmax 105 °C with Th of 50 °C). That's up to 25 °C more ∆T than is possible with a single-stage module. A larger ∆Tmax is desirable for cooling some sensors, detectors and devices that work best at temperatures lower than is possible with a single stage module.

The 15x15mm cold-side will accommodate many of these devices, and others, while the 30x30mm hot-side provides a substantial surface area for heat-sinking. Typically powered by 12 or 15 volt DC power sources.

In electro-optic and photonic applications, TM2 30-15-2.8 is commonly used to maintain a cold, and constant, temperature in order to stabilize the wavelength detector or sensor.


Comprehensive Specifications (Hot-Side Temperature 27 °C)

Imax = 2.8 Amps (Imax is the maximum current at ΔTmax)

Vmax = 15.7 Volts (Vmax is maximum voltage at ΔTmax)

Qcmax = 8.7 Watts (Qcmax is maximum cooling capacity at Imax, Vmax and ΔT = 0 °C)

ΔTmax = 95 °C (ΔTmax is maximum temperature difference at Imax, Vmax and Qc = 0W)

Internal resistance = 5.0Ω ± 10% as measured by AC 4-terminal method at 25 °C

Operating temperature range: -50 °C ~ +105 °C (Solder melting point: +138 °C)

Thickness tolerance: ± 0.25mm
Flatness 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

The lot number is printed on the 1st stage cold-side



click drawing for enlargement

TM2 30-15-2.8 Module Drawing


Dimensions in mm


Useful Links


Please contact us for a quotation. 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 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 are for outdoor, box-in-box, and other applications with ambient temperatures in the 40-50 °C range.

Toll free in North America: 1 866.665.5434

International: 603.888.2467