Datasheet

10
Medium performance modules
Kristall, our new range of medium performance thermoelectric modules,
is specially designed for high volume applications. A novel manufactur-
ing technique allows us to offer dependable performance – at an attrac-
tive price. Max. ∆T of up to 72°C at T
h
= 25 °C.
The Kristall range is based on a patented method for growing thermo-
electric material that delivers not only competitive cooling properties
but also cost-effective production. Thanks to an advanced nickel diffu-
sion barrier process, these modules can be used long-term at tempera-
tures up to 90°C. Options are silicon or epoxy sealing and lapping.
Typical application areas include
commercial refrigeration, elec-
tronics, industrial automation and
automotive.
We stock a limited range of standard
products. However, most specifi ca-
tions can be met for high volumes.
Medium performance modules
PM-071-10-13 3.9 8.8 18.2 71 2.0 20 20 3.6 200 24
PM-071-14-15 6.0 8.6 29 71 1.30 30 30 3.9 200 22
PM-127-10-13 3.9 15.4 32.5 71 3.50 30 30 3.6 200 24
PM-127-14-11 8.5 15.4 73 69 1.50 40 40 3.8 200 20
PM-127-14-15 6.0 15.4 51.6 71 2.20 40 40 3.9 200 22
PM-127-14-25 3.9 15.4 32.5 72 3.4 40 40 4.8 200 22
Product No.
P
c max
(W)
U
max
(V)
I
max
(A)
ABHL
S
AWG #
(mm)∆T
max
(°C)
Waste heat out
Work out
Heat out
Work in
• Lead wires are PVC insulated.
Max temperature = 105°C
• R
AC
tolerance = ±10%
• Tolerance of I
max
, U
max
, Q
max
= ±5%
Silicon sealed and Epoxy sealed version are available. Note ! Max ∆T is reduced by 2-3°C
for S-type and 1-2°C for E-type
R
AC
(ohm)
MEDIUM PERFORMANCE MODULES
TECHNICAL INFORMATION
Thermoelectrics and how it works
MultistageSingle stage
Heat Pump (Refrigerator) Peltier (1834)
The Thermoelectric Peltier effect is the most direct
way to utilize electricity to pump heat. Electrical cur-
rent (work input) forces the matter to approach a
higher energy state (black dots) and heat is absorbed
(cooling).
The energy is released (heating) as the matter
approaches a lower energy state (white dots). The net
cooling or heating effect is proportional to the electric
current and Peltier coefficient.
Power Generator Seebeck (1822)
Thermoelectric material can also be used for electric
power generation. Some of the heat input is converted
to electric current (work), as the higher energy mat-
ter (black dots) releases energy and cools to a lower
energy state (white dots). The net work is proportional
to the temperature difference and Seebeck coefficient.
Thermoelectric modules
The material used at working temperatures up to
150ºC is normally bismuth telluride, doped to obtain
p (positive) and n (negative) semi-conducting proper-
ties.
A number of pn-couples, thermally parallel and elec-
trically in series, are sandwiched between ceramic
plates.
The maximum temperature differential (∆T
max
) bet-
ween the cold and the warm side of a Supercool single
stage module is up to 75ºC at warm side temperatures
of 25ºC or ∆T = 85ºC at a warm side temperature of
50ºC. By increasing the number of stages in a multis-
tage arrangement, you also increase maximum ∆T.
Cooling
Heat in
Plate and bar ingots – special materials
technology