Laird Thermal Systems’ broad family of thermoelectric coolers provide design engineers with a wide range of cooling capacities, temperature differentials, form factors, finishing options and thermal cycling capabilities. Select from our standard thermoelectric cooler products or engage with a Laird thermal expert to quickly develop a custom thermoelectric cooling solution with our prototyping center for the optimum thermal management solution.
Why Use Thermoelectric Coolers
- Solid-state construction for high reliability
- Cool or heat for precise temperature control
- Low operating and maintenance costs
Find Thermoelectric Coolers
Use the following methods to find thermoelectric coolers for your application:
Thermoelectric coolers are available for specific cooling ranges, temperature differentials and operating temperatures. Review the portfolio map below to locate a product series of interest and find it through site search and menus.
Thermoelectric Cooling Technology
Solid-state heat pumps have been in existence since the discovery of the Peltier effect in 1834. The devices became commercially available several decades ago with the development of advanced semiconductor thermocouple materials in combination with ceramics substrates. Thermoelectric coolers are solid-state heat pumps that require a heat exchanger to dissipate heat utilizing the Peltier Effect. During operation, DC current flows through the thermoelectric cooler to create heat transfer and a temperature differential across the ceramic substrates, causing one side of the thermoelectric cooler to be cold, while the other side is hot. A standard single-stage thermoelectric cooler can achieve temperature differentials of up to 70°C.
The geometric footprint of a standard thermoelectric cooler can vary from 2 x 2 mm to 62 x 62 mm. The small size, combined with lightweight, makes thermoelectrics ideal for applications with tight geometric space constraints and low weight requirements. Traditional cooling technologies, such as conventional compressor-based systems, are typically much larger and heavier compared to thermoelectric technology.
Thermoelectric Coolers can also be used as a power generator by converting waste heat into usable output DC power. Thermoelectrics are ideal for applications that require active cooling below ambient and have cooling capacity requirements <600 Watts. A design engineer should consider thermoelectric coolers when the system design criteria includes such factors as precise temperature control, high reliability, compact geometry constraints, low weight and environmental friendly requirements.
Benefits of Thermoelectric Cooling
Thermoelectric Coolers have several advantages over alternate cooling technologies:
- Solid-state construction features no moving parts resulting in higher reliability.
- Units can be mounted in any orientation.
- Thermoelectric coolers can cool devices down to well below ambient. Colder temperatures can be achieved, down to minus 100°C by using a multistage thermoelectric cooler in a vacuum environment.
- Thermoelectrics can heat and cool by simply reversing the polarity, which changes the direction of heat transfer. This allows temperature control to be very precise, where up to ±0.01°C can be maintained under steady-state conditions.
- In heating mode, thermoelectric coolers are much more efficient than conventional resistant heaters because they generate heat from input power supplied plus additional heat generated by the heat pumping action.
- Devices are environmentally friendly because they use no CFCs and electrical noise is minimal.
- Thermoelectric coolers can be used as energy harvesters, turning waste heat into usable output DC power.
Thermoelectric Cooler Product Portfolio
Laird Thermal Systems designs and manufactures thermoelectric coolers, which adhere to strict process control standards and pass/fail criteria, assuring our customers receive the best possible products. Our extensive standard product portfolio covers a wide range of cooling capacities, temperature differentials, input power requirements and geometric footprints. Standard finishing options are available to accommodate alternate lead lengths, lapping thickness tolerances, and moisture protective sealants. Standard pre-tinning and solder constructions are available to accommodate solder-able mounting of the thermoelectric cooler to the heat exchanger, or processing of the thermoelectric cooler through a reflow oven to solder onto an optoelectronic package.
Laird Thermal Systems offers several thermoelectric cooler product families that can be classified by cooling capacity, temperature differential, form factor or thermal cycling capability. Reference perceptual map as a general guide as to where each product family fits with regards to these attributes.
The SH Series is an annular-style thermoelectric cooler. The hot and cold side ceramics have a circular hole in the center to accommodate light protrusion for optics, mechanical fastening or temperature probe. The RH Series is an annular thermoelectric cooler that is round in shape. The hot and cold side ceramics have a circular hole in the center to accommodate light protrusion for optics, mechanical fastening or temperature probe.
This product line is available in multiple configurations and geometric shapes. Assembled with Bismuth Telluride semiconductor material and thermally conductive Aluminum Oxide ceramics, the SH Series is designed for higher current and larger heat-pumping applications. For all SH and RH Series thermoelectric coolers, wire is stranded, 114 mm (4.5 in.) long and PVC insulated.
The Ceramic Plate CP Series of thermoelectric coolers is considered ‘the standard’ in the thermoelectric industry. This broad product line of high-performance and highly reliable thermoelectric cooler is available in numerous heat pumping capacities, geometric shapes, and input power ranges. Assembled with Bismuth Telluride semiconductor material and thermally conductive Aluminum Oxide ceramics, the CP Series is designed for higher current and large heat-pumping applications. For all CP Series thermoelectric coolers, wire is stranded, 114 mm (4.5 in.) long and PVC insulated.
The new HiTemp ETX Series offers higher efficiency and a 10% boost in heat pumping capacity than standard thermoelectric coolers. The thermoelectric cooler features a higher thermal insulating barrier when compared to standard materials creating a maximum temperature differential (ΔT) of 83°C. This product series uses an enhanced thermoelectric module construction that prevents performance degradation in high temperature environments, making it ideal for cooling autonomous systems, machine vision and digital light processors. The HiTemp ETX Series is available in multiple configurations covering a wide range of footprints, cooling capacities and voltage ranges.
The Multistage MS Series of thermoelectric coolers are able to reach colder temperatures than single stage thermoelectric coolers. It offers the highest temperature differential (ΔT), up to 131°C. This product line is available in numerous temperature differentials, heat pumping capacities and geometric shapes. The Multistage MS Series is designed for higher current and lower heat-pumping applications. It is ideal for applications operating in a room temperature environment. Custom designs are available upon request, however MOQ applies.
The OptoTEC™ Series is a high-performance, miniature thermoelectric cooler that utilizes advanced thermoelectric materials to boost cooling performance over standard thermoelectric coolers. Process controls have been enhanced to assure repeatability and long-life operation for temperature stabilization in telecom, industrial, autonomous and photonics applications. The OptoTEC Series is available in two formats; OTX and HTX. The OptoTEC OTX thermoelectric cooler has a maximum operating temperature of 120°C while the OptoTEC HTX thermoelectric cooler is designed to operate in extreme temperatures of up to 150°C.
The PowerCycling PCX Series is a high-performance thermoelectric cooler featuring a unique robust construction to provide long life operation in thermal cycling applications. This series is ideal for molecular diagnostics where fast temperature ramp rates are required while maintaining precise temperature with minimal gradient. PowerCycling PCX thermoelectric coolers are tested to withstand rigorous cycle testing based on latest PCR qualification standards without degradation in performance. Assembled with advanced thermoelectric materials, PCX thermoelectric coolers offer faster ramp rates compared to standard product offerings.
The PolarTEC™ PT Series is a porch-style thermoelectric cooler. The hot side ceramic has an extended edge that allows for a strong lead attachment to accommodate the wiring of multiple thermoelectric coolers into an array. This product line is available in 4, 6 and 8 Amp configurations and is ideal for high volume production. Assembled with Bismuth Telluride semiconductor material and thermally conductive Aluminum Oxide ceramics, the PolarTEC PT Series is designed for higher current and larger heat-pumping applications. For all PolarTEC PT Series thermoelectric coolers, wire is stranded, 152 mm (6.0 in.) long and PVC insulated.
The new UltraTEC™ UTX Series offers a 10% boost in heat pumping capacity, greater temperature differential and higher efficiency than standard thermoelectric coolers. It is assembled with advanced thermoelectric materials and features a higher thermal insulating barrier when compared to standard materials, creating a maximum temperature differential (ΔT) of 72°C. The UltraTEC UTX thermoelectric cooler is ideal for spot cooling applications with industrial lasers, laser projectors, medical diagnostic systems and analytical instrumentation. The Series is offered in multiple configurations including various heat pumping capacities, geometric shapes and voltage options.
Find the optimum Thermoelectric Cooler solution with the Thermal Wizard.