Step 53.  Via etch

 

 

 

 

Step

 

Process

Date

Operator

 

53.1

 

 

Max. TEOS to be etched ~10000A
Etch rate ~2700A/min
Etch time: 250sec (~20 sec over etch included)

Check R on manual probe: 0.1-1Ohm -> down on M1.

03/29/05

Horvath