TIE (unit)

Physical unit
Unit name	Two inch equivalent
Unit symbol	${\displaystyle \mathrm {TIE} }$
Physical quantity (s)	Area of wafers
Formula symbol	${\displaystyle A}$
dimension	${\displaystyle {\mathsf {L^{2}}}}$
In SI units	${\displaystyle \mathrm {1\,TIE=20,27\;cm^{2}} }$
Named after	English Two Inch Equivalent
Derived from	inch

The Two inch Equivalent (German: two- inch equivalent) is a measure of the surface , unit characters : TIE ( formula mark the surface: A ) and corresponds to the area of a circle having a diameter of two inches.

It is a seldom used unit of measurement, but it is used in semiconductor technology , especially when it comes to specifying the surface area of ​​circular wafers made of substrate material for LEDs .

The TIE is not an SI unit.

Individual evidence

1. ↑ ^{a b} GT Solar International p. 16 (PDF file).