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Active coolers target optical transceivers

Active coolers target optical transceivers

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By Julien Happich



Optical transceivers are used in communication equipment to transmit data at distances up to 1 km away for outdoor applications. Each unit contains a temperature sensitive laser diode, and the ability to transmit data at higher speeds depends on keeping the temperature typically below 70ºC. The thermoelectric-based ATC (Active Transceiver Cooler) Series removes heat from the optical module to maintain peak performance and minimize loss in packets of information. The ATC line has been optimized to remove heat from three types of transceivers: SFP, XFP and QSFP.
The custom ATC Series requires no maintenance and are designed to cool hot spots up to 30ºC below surrounding environment conditions. The TEAs are optimized to specific footprints and input power constraints that match the SFP, XFP or QSFP transceiver. Offering a high Coefficient of Performance (COP) without forced airflow, the customizable thermoelectric modules offer a highly reliable thermal solution built to operate in elevated temperatures long term.
Adequate heat sinking is required to keep the hot side temperature down and prevent thermal runaway. Laird’s design employs a proprietary interface material and mounting clips to assemble the TEA onto an EMI cage with an aluminium heat spreader. The thermal solution also uses a high temperature solder and special plating to operate in high temperature environments.

Laird – www.lairdtech.com

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