Product category:
Discrete Power Devices
News Release from: NXP Semiconductors | Subject: PMEG series Schottky diodes
Edited by the Electronicstalk Editorial
Team on 05 June 2003
Schottky diodes shrink by half
A breakthrough in Schottky diode semiconductor technology reduces power dissipation to such low levels that they can be housed in surface-mount packages less than half the size of existing devices.
Philips is claiming a breakthrough in Schottky diode semiconductor technology that reduces power dissipation to such low levels that these diodes can now be housed in surface-mount packages less than half the size of existing devices The new PMEG series Schottky diodes are designed to further enable miniaturisation of equipment such as mobile phones and digital cameras, while improving the overall electrical efficiency
This article was originally published on Electronicstalk on 23 Oct 2001 at 8.00am (UK)
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The inherent low forward volt drop and high-speed switching capabilities make these new Schottky diodes ideal for applications such as high-efficiency DC/DC convertors.
Power dissipation in forward resistance 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.
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By reducing their forward resistance to less than half that of equivalent diodes on the market, Philips' new PMEG-series of ultra-low-forward-voltage-drop VF Schottky rectifier diodes now reach power dissipation levels approximately half that of industry-standard types such as the BAT54.
The new PMEG series diodes also achieve continuous forward current ratings as much as 10 times higher (up to 2A in a SOD323 package compared to the BAT54's 200mA rating and larger SOT23 package), giving flexibility in design as well as board space reduction to customers.
"With the introduction of the new PMEG series Schottky diodes, Philips has once again proven that it can push the boundaries of what many people consider to be mature device technologies", said Andreas Niemann, Product Marketing Manager for Small-Signal Diodes at Philips Semiconductors.
"We continue to drive innovation in the discrete diode arena while delivering products that meet our customers' size and performance needs".
The new PMEG-series provides designers with packages that reduce the printed circuit board area required for Schottky rectifier diodes to as little as one quarter of that previously occupied by devices in SMA packages.
It also extends the current (IF) handling capacity of SMD Schottky diodes to unprecedented levels.
Philips' new ultra-low VF Schottky technology will also be combined with its innovative ultra-low VCEsat BISS-transistor technology to provide cost-efficiency transistor-diode combinations in small packages for applications such as low- and medium-power DC/DC convertors, mosfet drivers, battery chargers, relays and motor drivers (PMEM-series).
The PMEG-series Schottky rectifier diodes in SOD323, SOD523 and SOT666 packages are currently available.
Schottky-diode/BISS-transistor modules in SOT457 and SOT196 packages are also available.
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