Thermoelectric Cooling Module TM 127-1.4-4.0

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

 

With a cooling capacity of 32 watts, TM-127-1.4-4.0 is our least powerful single-stage thermoelectric module with a 40 x 40 mm footprint and 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 ΔT's) are not substantial. This is often an excellent choice if temperature stabilization near ambient is desired or if 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 in a wide range of applications including refrigeration, consumer goods, medical, analytical, laboratory & scientific instruments, chillers, telecommunications, electro-optics, industrial and military. A version for thermal cycling is available.

Operating temperature range: -50 °C ~ +200 °C

 

Comprehensive Specifications (Hot-Side Temperature 27 °C)

I_max = 3.9 Amps (I_max is the maximum current at ΔT_max)

V_max = 15.5 Volts (V_max is maximum voltage at ΔT_max)

Qc_max = 32 Watts (Qc_max is maximum cooling capacity at I_max, V_max and ΔT = 0 °C)

ΔT_max = 70 °C (ΔT_max is maximum temperature difference at I_max, V_max 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.)

Maximum recommended compression: 1MPa

Ceramics: Alumina (AL₂O₃) - Available with metalized and tinned surfaces

Available in strings of 2-12 modules

A version for thermal cycling is available

The lot number is printed on the center of the cold-side

Options & Designations (Suffix):
(for example: TM 127-1.4-4.0 "EL")

• Epoxy edge sealing = "E"
• RTV edge sealing = "RTV"
• Lapping to ± 0.01mm = "L"