Thermal - Thermoelectric, Peltier Modules

Part Number	Description / PDF	Quantity
56890-503 Laird Thermal Systems	PELTIER MOD CP14,71,045,L1,W4.5	73
387004931 Laird Thermal Systems	ETX11-12-F2-3030-TA-RT-W6	0
387004949 Laird Thermal Systems	ETX5-6-F1-2040-TA-RT-W6	40
430834-503 Laird Thermal Systems	PELTIER OT08,11,F1,0305,GG,W2.25	45
430446-503 Laird Thermal Systems	PELTIER CP08,127,05,L1,RT,W4.5	1
430122-507 Laird Thermal Systems	PELTIER CP2,127,06,L1,EP,W4.5	0
56860-501 Laird Thermal Systems	PELTIER MOD CP14,35,045,L1,W4.5	20
9360002-304 Laird Thermal Systems	PELTIER MS3,119,20,15,00,W8	16
7050045-503 Laird Thermal Systems	PELTIER MOD 43.9X39.9X3.33MM	14
387004969 Laird Thermal Systems	ETX2.5-12-F1-4040-TA-RT-W6	0
9350006-307 Laird Thermal Systems	MS2,192,14,20,11,18,22,W8	12
57125-501 Laird Thermal Systems	PELTIER MODULE CP2,31,06,L1,W4.5	1
71035-506 Laird Thermal Systems	PELTIER CP08,31,06,L,EP,W4.5	11
387005354 Laird Thermal Systems	ETX2.6-12-F1-2525-TA-W6	14
7050045-502 Laird Thermal Systems	PELTIER MOD 43.9X39.9X3.33MM	33
430007-509 Laird Thermal Systems	PELTIR OT15,30,F2A,0610,11,W2.25	0
475089-301 Laird Thermal Systems	PELTIR MS2,068,14,14,15,15,11,W8	5
387001742 Laird Thermal Systems	ET4,7,F1,2323,TA,RT,W4.5	315
56460-500 Laird Thermal Systems	PELTIER CP10,127,05,L1,EP,W4.5	433
430437-506 Laird Thermal Systems	ET19,35,F1N,0612,21,EP,W2.25	39

Thermal - Thermoelectric, Peltier Modules

1. Overview

Thermoelectric Peltier Modules (TEMs) are solid-state devices that utilize the Peltier effect to transfer heat between two electrical junctions. When direct current (DC) passes through a thermoelectric material, heat is absorbed on one side and released on the opposite side. These modules enable precise temperature control without moving parts, refrigerants, or maintenance, making them critical in modern electronics, medical devices, and industrial systems.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Standard TEMs	Balanced cooling capacity and cost	Industrial temperature control systems
High-Power TEMs	High T (temperature difference) and large heat pumping capacity	Laser diode cooling, power electronics
Microminiature TEMs	Sub-centimeter dimensions with precise thermal regulation	Medical sensors, infrared detectors
Multistage TEMs	Cascaded design for ultra-low temperature applications	Cryogenic systems, scientific instruments

3. Structure and Components

A typical Peltier module consists of: - Ceramic substrates (high thermal conductivity electrical insulation) - Thermoelectric elements (Bismuth Telluride - Bi₂Te₃ based semiconductors) - Copper interconnects (low electrical resistance) - Solder junctions (thermal and electrical bonding) - Epoxy encapsulation (moisture protection)

4. Key Technical Specifications

Parameter	Description	Importance
Q_max (W)	Maximum heat pumping capacity	Determines cooling capability
T_max ( C)	Maximum temperature difference	Defines operational limits
I_max (A)	Maximum operating current	Impacts power consumption
ZT Value	Thermoelectric figure of merit	Material efficiency indicator
Dimensions (mm)	Physical size	Integration constraints

5. Application Fields

Main industries include: - Electronics: CPU/GPU cooling, telecom equipment - Medical: PCR thermal cyclers, patient care devices Automotive: Battery thermal management, cabin climate control Scientific: Spectroscopy instruments, CCD cooling

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Laird Thermal Systems	HiTemp Series	T_max=72 C, 200W capacity
TE Connectivity	CP Series TEC	Miniature 10 10mm footprint
II-VI Incorporated	Laser Diode Cooler	High-reliability multistage design

7. Selection Recommendations

Key considerations: - Required T and heat load calculations - Operating voltage/current compatibility - Physical space constraints - Environmental conditions (humidity, vibration) - Cost vs. efficiency trade-offs

8. Industry Trends

Future developments focus on: - Advanced materials (Skutterudites, silicon-germanium) - Micro-scale integration for mobile devices - Smart modules with PID temperature control - Eco-friendly thermoelectric materials - 3D-printed customized geometries