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To: richardred who wrote (7191)8/15/2003 11:24:03 AM
From: Jdaasoc  Read Replies (2) | Respond to of 10714
 
Isn't CREE a semi company working on Schottky diodes as area of product growth or is it a soap opera.

I am keen on IRF since it doesn't have the baggage that CREE does and they seem to be getting design wins in commercial and military fields.

International Rectifier Introduces the Industry's Smallest 1A, 40V Surface-Mount Schottky Diode on the Market
BUSINESS WIRE - August 15, 2003 06:00
EL SEGUNDO, Calif., Aug 15, 2003 (BUSINESS WIRE) -- International Rectifier, IR(r) (NYSE:IRF), today introduces the smallest Schottky diode in the industry. The IR140CSP FlipKY(tm) device utilizes standard ball-grid array (BGA) technology, and occupies a total area of 2.25 square millimeters, or 86% smaller than the standard SMA package, and as much as 32% smaller than similar competing lead-less devices. The 1A, 40V Schottky diode is a four-ball, 1.5mm x 1.5mm device with a profile of less than 0.8mm. The FlipKY revolutionizes the low power Schottky diode market by eliminating the lead frame and epoxy traditionally used in other devices.

The FlipKY is ideal for hand-held, portable equipment such as cell phones, PDAs, notebook computers, hand held computers, MP3 players and hard disk drives where the small size is crucial to equipment success.

BGA technology enables size reduction and better heat transfer away from the die junction to the circuit board. Moreover, since this device is made with true chip scale packaging, it dissipates heat directly from the die into the air, increasing thermal efficiency. In fact, thermal resistance junction-to-ambient is rated at 75 degrees Celsius per watt maximum and thermal resistance junction-to-PCB is typically 55 degrees Celsius per watt.

Since the IR140CSP is so small, it allows strategic placement on the circuit board, drastically reducing stray inductance and increasing overall circuit efficiency. The FlipKY device is lead-less, and minimizes lead inductance compared to all lead frame and axial packages.

Shawn O'Grady, Marketing Manager for Portable Products at International Rectifier, said, "The new FlipKY device has pushed the envelope for package size reduction in the Schottky diode market, and sets a new size-to-performance standard for future portable product designs."