ESNA spoke with ReSolve, part of Arrow's newly launched reverse logistics group, which also includes Intechra, an IT asset disposition services company and Converge, an independent distributor, to discuss the importance of a reverse supply chain logistics program. 
The aftermath of Japan's earthquake last month has left the electronics supply chain struggling with production stoppages and shipment delays of electronic components and raw materials supply.
Because the DRAM market is highly volatile the current buyer's market could quickly swing into a seller's market during the second half of 2011. Buyers will need to keep an eye on several key issues.
Vishay delivers heavy-duty caps for power electronics
Malvern, Pa. — Vishay Intertechnology Inc. has expanded its heavy-duty ESTA HDMKP capacitor line with new capacitance and packaging options for power electronics applications.
The HDMKP capacitors are now available in six standard voltages from 900 V to 2700 V (dc). Previously offering capacitance values from 40 to 1100 microfarads, the series has now been extended to offer capacitance values up to 2235 microfarads, with a capacitance tolerance of 5 percent.
The HDMKP capacitors are aimed at dc and ac filtering and dc linking applications in power converters for uninterruptible power supplies, wind turbines, and in power converters for traction and industrial drives. They also can be used as impulse discharge capacitors for magnetizing and welding.
The metallized-film HDMKP capacitors feature current ratings as high as 150 A, high impulse current of up to 25 kA, and low self-inductance of less than 70 nH. The HDMKP capacitors also offer extremely low losses at high frequencies, low ESR, and high resistance to the effects of shock and vibration for high reliability and life expectancy in rugged environments.
Capacitor height options now range from 105 mm to 260 mm, with diameters of 84.4 mm and 116 mm. The devices feature a non-polar dielectric and are easily mounted using an integrated M 12 stud on their base, said Vishay.
The HDMKP capacitors are specified for an operating temperature of -40° to +70° deg. C at full rated voltage, or up to +100°C at half of the rated voltage, and meet IEC 61071-1, EN 61071, IEC 68-2, and IEC 61881 standards. Terminal-to-terminal test voltage is 1.5 times the rated dc voltage for 10 seconds.
Availability: Samples and production quantities are available now, with lead times of 8 to 10 weeks.
Resources: HDMKP datasheet.
Delphi Automotive intros an aluminum cable as an alternative to more expensive copper cabling in automotive applications.