|25th April 2004, 04:58 AM||#21|
Join Date: Feb 2004
Location: Silicon Valley
Re: About vertical and lateral mosfet
The main reason they have survived as a product is continued demand in the audio market. It is questionable whether there is enough demand to ensure long term availability from the manufacturers. The major player, Hitachi, has transferred its discrete semiconductor manufacturing to Renesas, a joint venture company (with Mitsubishi). Toshiba supplies a few parts, but is rumored to be ending production. There are several boutique semiconductor makers who produce them, but I personally would not bet my company on them.
The vertical MOSFETs have higher transconductance, lower on resistance, and higher power capability, and with care can perform as well or better. They usually need to be matched for parallel operation, and need temperature compensating bias generators for reliable operation in audio amps.
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