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Vishay touts EPIC with Joule effect ignition

Posted: 26 Dec 2007     Print Version  Bookmark and Share

Keywords:thin-film resistor chip  electro-pyrotechnic initiator chip; 

A thin-film resistor chip specifically designed as an electro-pyrotechnic initiator chip (EPIC) has been introduced by Vishay Intertechnology Inc. It is the industry's first such device to offer Joule effect ignition for very fast firing times down to 50µs, and a no fire/all fire ratio up to 70 per cent, said Vishay.

EPIC resistors, also known as bridge resistors, are resistive elements that convert electrical energy into heat energy in a precise electro-thermal profile for the purpose of initiating a series of pyrotechnic events in a controlled energetic reaction, said Vishay. The new resistor is optimised for squib header applications in automotive safety systems for the deployment of airbags and other safety devices; military pilot ejection systems, explosive bolt disengagement of airborne missiles, chaff dispensers, artillery projectile activators, and anti-tank mines, and in mining and demolition systems.

With firing energy down to 50µJ and an ohmic range of 2R to 10R, the device provides designers with very predictable, reproducible, and reliable behaviour, said Vishay. Offered in the standard 0603 case size, with other sizes available upon request, the resistor features easy set up of firing levels, and is compatible with various pyrotechnic compositions, even those requiring no primer.

Prices range from Rs.7.89-19.73 (20-50 cents)/piece depending on the quantity ordered and application for U.S. delivery.

Samples and production quantities are available now, with lead times of 10 to 12 weeks for larger orders.

- Gina Roos

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