Nextreme Thermal Solutions’ OptoCooler HV14 thermoelectric cooler (TEC) is the first module in a new class of high voltage and high heat pumping thermoelectric coolers that operate at low currents and are optimized for standard circuitry and power requirements. The device can pump up to 1.5W of heat at 85oC and operates at a maximum 2.7 V with a maximum current of around 1A, … [Read more...]
Easy Release Thermal Gap Pads
Fujipoly has introduced specially formulated thermal interface gap pad materials that simplify board-level maintenance by reducing material tearing during disassembly for re-work and repair. Sarcon GR-H and XR-H thermal interface materials feature a unique hardened top surface. This one-sided surface treatment is less tacky than the opposing contact side, allowing the thermal … [Read more...]
High-Performance Vane-Axial DC Fans
Orion Fans has introduced a new line of vane-axial fans with superior airflow in exceptionally high static pressure environments. High performance VA Series DC fans feature a dual ball bearing system with a brushless DC, auto restart, polarity-protected motor. The OD1238 VA Series (120x38mm) offers airflows from 3.96 to 8.0 m3/min (140 to 283 cfm). The OD9238 VA Series … [Read more...]
Convection and radiation heat loss from a printed circuit board
In last issue's column, a method for calculating the thermal conductivity of a printed circuit board (PCB) was described. Now, we look at a more complicated heat transfer process, namely the loss of heat from the surface of a PCB to the ambient air. This situation is more challenging to describe mathematically since it involves the simultaneous processes of heat spreading by … [Read more...]
Disk drive reliability and thermal management
Disk drive reliability and thermal management Hard disk drives are electromechanical systems which store information. They are the most complex electronic sub-assembly within a computer. If a microprocessor can qualify as the "heart" of a computer system, a disk drive can qualify as the "brain". Drives store and retrieve data in milliseconds, measured as access and transfer … [Read more...]
