TM 127 1.4-4.0 Thermoelectric Module

TM 127-1.4-4.0
Thermoelectric Cooling Module

Specifications with Thot= 27°С

Part Number

Imax
A

Umax
V

Qcmax
W

∆Tmax
K

Dimensions (mm)
L x W x H

TM 127-1.4-4.0

4.0

15.5

32

70

40 x 40 x 4.6

Module Photo

TM 127-1.4-4.0

 

See tabs below for comprehensive information on TM 127-1.4-4.0

With a Qcmax of 32 watts (Th 27 °C), TM-127-1.4-4.0 is our least powerful single-stage thermoelectric module, in the 40 x 40 mm footprint, intended for use with 12 to 15-volt DC power sources. This module is best used in applications where maximum coverage is desired but loads (or DT's) are not substantial. This is often an excellent choice if temperature stabilization near ambient is desired or when space for a hot-side heat-sink is limited.

TM 127-1.4-4.0 is commonly used in multi-module applications. Connecting the module in strings allows for coverage of a large surface area. The two choices for connecting multiple modules are, in parallel (same input voltage with increased current) or in series (input voltage increases but current is reduced). A combination of the two, consisting of multiple parallel "strings," of modules connected in series, is common for managing large surface areas. From a design perspective, longer strings are usually comprised of modules like TM 127-1.4-4.0, with low to moderate Qmax ratings. This is partly to limit the amount of heat ejected, but primarily because of the relative scarcity, and prices, for power supplies with high current ratings.

May be used for cooling, heating and temperature stabilization and may be employed in a wide range of applications including refrigeration, consumer goods, instrumentation, medical, analytical, laboratory & scientific instruments, telecommunications, electro-optics, industrial and military.

Available in strings, of your design, from 2-12 modules long. A version for thermal cycling is available. Contact us for details.

Specifications (Hot-Side Temperature 27 °C)

Imax = 4.0 Amps (Imax is the maximum current at ΔTmax)

Vmax = 15.5 Volts (Vmax is maximum voltage at ΔTmax)

Qcmax = 32 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 = 3.15 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: 20 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

A thin version (4.2mm) of TM 127-1.4-4.0 is available by request

Comply with ROHS (Restriction of Hazardous Substances) and 2006/122/EC - PFOS (PerFluoroOctane Sulfonates)

Performance Curves with Th 27 °C

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TM 127-1.4-4.0 Thermoelectric Module Performance Curves with Th of 27 °C  

In a forced convection assembly the hot-side (Th) of the TEC is in contact with a heat-sink that will always have a temperature above ambient. This curve is particularly appropriate for the many applications operating in an ambient around 22 °C with a typical 5 °C increase in the temperature of the heat-sink.

 

Performance Curves with Th 50 °C

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TM-127-1.4-4.0 Performance Curves at 50 °C  

In a natural or forced convection assembly the hot-side (Th) of the TEC is in contact with a heat-sink that will always have a temperature above ambient. This curve is particularly appropriate for natural convection applications operating in an ambient around 20 °C with a 30 °C increase in the temperature of the heat-sink, a forced convection assembly within an instrument with marginal ventilation or an approximately 45 °C ambient temperature.

 

Prices

TM 127-1.4-4.0 Prices ( July 2017)

Option Prices and Designations (Suffix):
(for example: TM 127-1.4-4.0 "EL")

  • RTV edge sealing = "RTV" $1 per module
  • Epoxy edge sealing = "E" $2 per module
  • Lapping to ± 0.01mm = "L" (for multi-module apps) $2 per module