Thermoelectric Cooling Modules
(Peltier Device or Solid Heat
Pump)
RoHS Compliant
The Table of TEC/Peltier
Devices
Unlike conventional compressor
refrigeration systems, thermoelectric cooling modules (TEC or Peltier device)
are solid state cooling systems that incorporate semiconductor
technologies and electronic assembly techniques. Thermoelectric cooling modules
are solid-state, vibration free, noise free, and freon free heat pumps with
MTBF 200K hours.
They are modular devices, and are simple to install and operate
at direct current voltage. Since they consist primarily of thermoelectric
material sandwiched between
ceramic plates and have no moving parts, they are inherently reliable.
The modules represent the best of high science and technology. These
incredible miniature heat pumps raise
or lower temperature in a small area almost
instantly. Current applied to the device will produce
heat on one side
and
cold
other side, up to 68ºC difference
between the
two sides. Modules can be
mounted in parallel to increase the heat transfer effect or can be stacked
to achieve high differential temperatures. They are widely used
in industrial areas,
for example, military, aviation, space flight,
electronics, medical instruments, laboratory, portable cooler/warmer, and
so on.
1. Computer Microprocessors
2. CCDs
3. Low-Noise Amplifiers
4. Infrared Detectors
5. Semiconductor Wafer Probers
6. Laser Diodes and Equipment
7. Temperature Stabilization
of Electronic Component
Cooling an object from room
temperature to freezing is a typical thermoelectric application. As
an example, assume that the object (electronic device or picnic box)
produces or takes in
from the environment 20 watts of heat. A thermoelectric cooling module will
remove this 20 watts via its cold surface and deposit it on its hot surfaces.
This 20 watts plus the power input to the TEC must be
transferred to the atmosphere by means of a heat sink. A fan is recommended
to put on a heat sink. Selecting a proper
heat sink is very important
when you design a thermoelectric cooling system. Usually, temperature
of a heat sink rises 10ºC above ambient temperature after TEC applied
a
proper voltage when the cold
side of TEC is without any heat load. You MUST increase the size of
heat sink and fan or reduce voltage input to the TEC to achieve better
performance if the temperature
of the heat sink is over 10ºC above ambient temperature when no heat
load attached to the cold side of TEC.
Therefore, you should select the TEC that can pump out at least 20 watts
heat (Qmax = 20 watts)
from our product list. For more information, please download our
Thermoelectric Cooling Module (TEC) Application Note
and
Brief TEC Installational Procedure.
For technical assistance and more information, please email
info2010@magaland.com
For sales, please email sales@magaland.com
Q: Which side of
TEC is the hot side?
A: The side of the
TEC where the two wires attach is the hot side
side if the red/black wire is connected to positive
voltage/ground respectively.
Q: Which wire
is positive polarity and which wire is ground?
A: Usually, the red
wire is positive and the black wire is ground.
The hot side
and cold side of TEC can be swapped if the red/black wire polarity is swapped.
Q: After voltage
was applied to the TEC, it didn't create one hot side and one cold side.
A: You might've
not mounted a proper heat sink with a fan on the hot side of TEC. The
heat
created by
hot side of TEC was not transferred to ambient through heat sink, and instead
transferred back to cold side of TEC.
Q: What is the operating
voltage for a TEC?
A: Different
TECs have different operating voltages. For TEC1-12706 and TEC1-12703,
the
efficient operating voltage is from +5VDC to +12VDC. For TEC1-7103,
the efficient operating voltage is
from +3VDC
to 6.5VDC. Heat pump power is proportional to voltage power.
Q: How big of a heat
sink is required by the TEC?
A: For TEC1-12706,
a 80x80x25mm heat sink with a same size of DC fan is required.
For TEC1-12703,
a 60x60x20mm with a same size of DC fan is required. For TEC1-7103, a 50x50x15mm
heat sink with
a same size
of DC fan is required. Of course, a bigger heat sink on hot side of TEC has
a better performance of TEC.