Novel package boosts Schottky efficiency

A new range of high-efficiency Mega Schottky rectifier diodes comes housed in compact flat lead SOD323F packages.

A new range of high-efficiency Mega Schottky rectifier diodes comes housed in compact flat lead SOD323F packages.

These rectifiers are more than 75% smaller than rectifiers in the industry standard SMA package and 60% more efficient than Philips' Mega Schottky rectifiers in the SOD323.

These rectifiers are ideal for use in power management applications to improve performance, to extend battery life and to reduce board space needed in products such as mobile phones and digital cameras.

Power dissipation due to forward voltage drop has remained a major limitation in improving overall electrical efficiency and reducing package size.

The heat generated through power dissipation has caused package sizes to remain significantly larger than the silicon die to conduct heat away from the die and prevent damage to the device.

Philips' compact SOD323F flat lead package has a shorter thermal pathway than the SOD323 gullwing package and uses thicker leadframe material to significantly reduce the thermal resistance of the package.

As a result, Mega Schottky rectifiers in the SOD323F have a 50% higher current capability and operate at higher temperatures than other Schottky rectifiers, providing design engineers with increased flexibility in design in addition to board space reduction.

"We live in a world where mobile communications and consumer products are growing at an exceptional rate".

"A good example of this is the digital still camera market with an annual growth rate of 30% (iSuppli, 2004)", said Achim Engelhardt, Product Marketing Manager for Diodes at Philips Semiconductors.

"Philips' new portfolio of Mega Schottky rectifiers combines the SOD323F package with Philips' Mega Schottky rectifier technology to allow engineers to support this market demand with smaller designs that have a longer battery life".

Philips' SOD323F features a compact footprint of 1.7 x 1.25 x 0.7mm.

In addition to the performance benefits of the new package, the reduction of the package size provides cost savings in terms of purchasing and manufacturing - offering the optimum cost/performance ratio for Schottky rectifier technology.

Initial devices in Philips' portfolio of Mega Schottky rectifier diodes in SOD323F are available now.

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