AGSCalabrese wrote:
> The values in the subject line are ball-park.   I am looking for most  
> commonly used logic level MOSFETs

I've been using the 2N7000 as a standard LV/LC (low-voltage, low current) N-ch 
FET, and either the BSS84 or the IRLML6402 for P-ch. All of these have a 
fairly low threshold (usually ~2V) and work decently well when coupled with 
standard LSTTL or 5V CMOS logic.

For higher voltages/currents, I usually keep at least a few of the following 
in my spares box:

   IRF9520 -- 6A 100V 0.60R, P-ch. Vgs-threshold: min -2V, typ ??, max -4V.
   IRF640  -- 18A 200V 0.15R, N-ch. Vgs-th: min -2V, typ -3V, max -4V.
   IRF740  -- 10A 400V 0.48R, N-ch. Vgs-th: min -2V, typ -3V, max -4V.

The SGS STP80NF55 might also be worth a look -- that's a 55V, 80A, <0.0065R 
N-ch FET. Gate threshold is the same as the IRF740.

I should probably mention -- these are all TO220. The 2N7000 is TO92 but I use 
the SOT23 version instead (also known as the 2N7002). BSS84 and IRLML6402 are 
SOT23. Aside from the BSS84's inordinately high Rds-on, that is... the IRLML' 
is *far* better in that regard.

I will, however, confess that IRF's datasheet writers need a few lessons in 
"proper writing of a datasheet". The IRLML6402 datasheet doesn't actually 
contain the pinout (!)

The pinout is actually in a separate PDF file... "Micro3/SOT-23 Package Outline":
   http://www.irf.com/package/outline/po_micro3.pdf

*sigh*

-- 
Phil.
piclist@philpem.me.uk
http://www.philpem.me.uk/
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist