2-stage thermoelectric coolers

2-stage thermoelectric module, Peltier elements

Designs of 2-stage thermoelectric modules

System of notation:

An universal abbreviation is used to notate multi-stage coolers: ТВ-n-(N1-N2-N3-N4)-h, where:
ТВ — product abbreviation — thermoelectric battery (cooler);
n — number of stages in the cooler;
N1 — N4 — number of thermocouples in the first, second, third and forth stages of the thermoelectric cooler.
(N1-N2) is used for two-stage coolers, (N1-N2-N3) — for three-stage coolers and (N1-N2-N3-N4) — for four-stage coolers;
h — height of the thermoelectric element in the bottom stage (in millimeters).
For example, in the cooler TB-2-(11-4)-1.0: 2 stages, 11 couples in the first stage, 4 couples in the second stage, the height of the elements in the bottom stage is 1,0 mm.

STANDARD TERMS OF DELIVERY

ADDITIONAL OPTIONS

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Parameters Imax, Qmax, Umax, dTmax - are given at Th=300K.

Name	Imax (A)	Qmax (W)	Umax (V)	dTmax (K)	R (Ohm)	A (mm)	B (mm)	C (mm)	D (mm)	H (mm)	Designs
TB-2-(11-4)-1,5	1,0	0,4	1,3	93	1,26	6,0	4,0	2,0	4,0	6,7	3
TB-2-(11-4)-1,2	1,2	0,5	1,3	92	1,55	6,0	4,0	2,0	4,0	6,1	3
TB-2-(11-4)-1,0	1,5	0,6	1,3	92	0,85	6,0	4,0	2,0	4,0	5,7	3
TB-2-(17-4)-1,5	1,1	0,4	2,0	94	1,85	6,0	8,0	4,0	2,0	6,7	4
TB-2-(17-4)-1,2	1,3	0,5	2,0	93	1,50	6,0	8,0	4,0	2,0	6,1	4
TB-2-(17-4)-1,0	1,6	0,6	2,0	91	1,26	6,0	8,0	4,0	2,0	5,7	4
TB-2-(31-8)-1,5	1,1	0,9	3,6	93	3,40	8,0	10,0	4,0	4,0	6,7	4
TB-2-(31-8)-1,2	1,3	1,1	3,6	92	2,70	8,0	10,0	4,0	4,0	6,1	4
TB-2-(31-8)-1,0	1,6	1,3	3,6	91	2,25	8,0	10,0	4,0	4,0	5,7	4
TB-2-(31-12)-1,5	1,0	1,1	3,7	93	3,60	8,0	10,0	6,0	4,0	6,7	4
TB-2-(31-12)-1,2	1,2	1,4	3,7	92	2,85	8,0	10,0	6,0	4,0	6,1	4
TB-2-(31-12)-1,0	1,4	1,6	3,7	91	2,40	8,0	10,0	6,0	4,0	5,7	4
TB-2-(59-18)-1,5	1,1	1,8	7,1	94	6,70	12,0	12,0	6,0	6,0	6,7	2
TB-2-(59-18)-1,2	1,3	2,2	7,1	93	5,30	12,0	12,0	6,0	6,0	6,1	2
TB-2-(59-18)-1,0	1,5	2,6	7,0	92	4,35	12,0	12,0	6,0	6,0	5,7	2
TB-2-(127-127)-1,3	2,8	16,1	15,4	83	4,70	30,0	30,0	30,0	30,0	8,8	1
TB-2-(127-127)-1,15	5,8	34,0	15,4	84	2,30	40,0	40,0	40,0	40,0	8,5	1
TB-2-(199-199)-0,8	10,2	95,0	24,0	84	2,30	40,0	40,0	40,0	40,0	6,8	1
TB-2-(127-127)-1,15 (Bullfinch)	8,8	31,0	8,9	87	1,05	40,0	40,0	40,0	40,0	7,5	1
TB-2-(1-1)-1,8	67,7	1,79	0,086	89	0,0012	6,1	12,2	2,25	5,55	4,1	4

STANDARD TERMS OF DELIVERY

substrate material — alumina (ВК-96)
height tolerance ± 0.35 mm
parallelism 0.15 mm (L4)
flatness 0.1 mm (L4)
pin orientation (for rectangular coolers) — to the longer side
operating temperature up to 80°С, maximal assembly temperature 120°С (assembly solder Tm = 139°С)

ADDITIONAL OPTIONS

Description	Notation (*)	Note
operating temperature up to 120°C, max assembly temperature = 130°C**	HT(120)	assembly solder with Tm = 139°C
operating temperature up to 150°C, max assembly temperature = 170°C**	HT(150)***	assembly solder Pb-Sn with Tm = 183°C***
operating temperature up to 200°C, max assembly temperature = 220°C** (Available only for design №1)	HT(200)	assembly solder with Tm = 232°C
height tolerance = ± 0.05 mm; parallelism 0.03 mm; flatness 0.02 mm.	L1
height tolerance = ± 0.025 mm; paral lelism 0.02 mm; flatness 0.015 mm.	L2
metallization of cold (mc) and (or) hot side of cooler with solder tinning (melting temperature = 95°C, 117°C, 139°C, 183°C)	mc95, mh95, mm117 etc.
gold plating	At request
substrate material – aluminium nitride (AlN)	N	heat conductivity > 180 W/mK
sealant: epoxy, silicon	E, S
non-standard pin orientation
type and length of wires by customer’s requirement
non-standard height of coolers
soldering on cold or hot heatsink, packaging or cold block

(*) - the notations shown are used to notate additional options in cooler name;
(**) - the maximum assembly temperature influence on the module must not exceed 2 minutes;
(***) - Important! TEС with this option does not satisfy ROHS requirements.