MFG Part Number DA-020-12-02-00-00
Tunnel Series Thermoelectric Cooler Assembly
The DA-020-12-02 is a thermoelectric based air conditioner designed to temperature control small chambers used in analytical and medical diagnostic instruments. The unique design offers premium fans pushing air across-high density heat sinks to minimize the number of air flow paths required to operate. The design utilizes custom thermoelectric modules to maximize cooling capacity with a high coefficient of performance. Moisture resistant insulation is used to keep condensation from penetrating the thermoelectric module cavity. The unit operates on DC and is designed for an indoor lab use environment. It has a maximum Qc of 19 Watts when ΔT = 0 and a maximum ΔT of 42 °C at Qc = 0.

You can interact with the Performance Curves below to estimate the cooling performance by entering the thermal and electrical operating conditions for your application.
Click the [Save Changes] button to create a Customized PDF Datasheet.
Please Note: Actual application performance will vary from calculated values based on actual thermal design characteristics.

Electrical and Thermal Performance

Use the sliders, input fields and [UPDATE] button below to enter your application's electrical and thermal conditions. Use the Graph Y and X Axis buttons to display a variety of performance curves and use the Voltage/Current slider to choose the electrical operating point to display performance.
Click [Save Changes] button to save your results as a Customized PDF Datasheet.

Selected Operating Point
Cooling Power (Qc) = Watts
TEM Voltage = Volts
TEM Current = Amps
Power Supply = Watts
Power Dissipated (Qh) = Watts
Thot = °C
Fan Voltage = 12.0 Volts
Fan Current = 0.5 Amps
Optimum COP
Cooling Power (Qc) = 4.55 Watts
TEM Voltage = 5.44 Volts
TEM Current = 0.99 Amps
TEM COP = 0.84
Power Supply = 5.4 Watts
Power Dissipated (Qh) = 9.94 Watts
Fan Voltage = 12.0 Volts
Fan Current = 0.5 Amps
Maximum Qc
Cooling Power (Qc) = 11.31 Watts
TEM Voltage = 13.51 Volts
TEM Current = 2.48 Amps
TEM COP = 0.34
Power Supply = 33.5 Watts
Power Dissipated (Qh) = 44.8 Watts
Fan Voltage = 12.0 Volts
Fan Current = 0.5 Amps

Select Y-Axis

Select X-Axis

Imin: 0.5 A
Imax: 2.5 A

Vmin: 3.2 V
Vmax: 13.5 V
Click UPDATE to view changes in thermal operating conditions
Control Temp  
Ambient Temp  
Δ T  

Heat Transfer Mechanism, Cold Side
Direct - Conduction
Heat Transfer Mechanism, Hot Side
Air - Forced Convection
Operating Temperature Range
-10°C to 44°C
Supply Voltage
12.0 VDC nominal / 14.7 VDC maximum
Current Draw
2.7 A running / 3.2 A startup
Power Supply
33.0 Watts
Performance Tolerance
Hi-Pot Testing
No Testing
40,000 hours
0.56 kg
Panel Mounting
Flush Mount

Mounting Hole Location
Wiring Schematic

1For indoor use only

Any information furnished by Laird and its agents, whether in specifications, data sheets, product catalogues or otherwise, is believed to be (but is not warranted as being) accurate and reliable, is provided for information only and does not form part of any contract with Laird. All specifications are subject to change without notice. Laird assumes no responsibility and disclaims all liability for losses or damages resulting from use of or reliance on this information. All Laird products are sold subject to the Laird Terms and Conditions of sale (including Laird’s limited warranty) in effect from time to time, a copy of which will be furnished upon request.

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Revision: 00 Date: 06-01-2022

Print Date: 10-01-2023