Where to find parts info

Check:

Analog Devices

www.analog.com

Texas Instruments / Burr-Brown / National Semiconductor (now part of TI)

www.ti.com

Linear Technology

www.linear.comwww.linear.com

Fairchild Semiconductor

For discrete semiconductor info, see:
Discrete.Parametric results at http://www.fairchildsemi.com/products/discrete/    

also for discrete semiconductors

ON Semiconductor