Yep, and dice is plural.
The 14" wafers and such are all low resistivity, for making low voltage
devices. Nobody makes them that large with high resistivity material (that I
know of) for making stuff like rectifiers.
-WB2WIK/6
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]On
Behalf Of gdaught6@stanford.edu
Sent: Monday, October 27, 2008 9:07 PM
To: amps@contesting.com
Subject: Re: [Amps] Semtech diode
> Radio WC6W wrote:
> > Hi John,
> > An individual diode, or other semiconductor device, when it is sawn free
> > from the wafer but, unpackaged.
> >
>
> I thought that was a "Die" or do they just refer to the CPU chip as a die.
> Back when they were making those diodes the largest Silicon wafer was
> maybe a couple of inches across. About 35 years ago they were in the
> neighborhood of 1". Now they are over 14" in diameter per single
> crystal wafer.
> Man! What an improvement in yield and decrease in devise cost.
A single device when cut from the processed wafer is a "die". A bunch of them
are
"dice". That's 1960 terminology from Fairchild, so that ought to be pretty
solid.
Now everything is "chips".
73,
George T Daughters, K6GT
CU in the California QSO Party (CQP)
October 4-5, 2008
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