1000 mil = 1 inch
1 mil = 25.4 microns
1mm = 39.4 mil

Pkg Pin
spacing
Width Pin count Mount
DIP 100 mil 300 or 600 mil 8 .. 44, every 2n through-hole
SOT-223 90 mil 140 mil 4 SMT
SOIC 50 mil 150 - 520 mil 8 .. 44, every 2n SMT
PLCC 50 mil 350 - 1150 mil 20 - 84 SMT
SSOP 25 mil 150 or 209 mil 8 .. 28, every 2n SMT
- 50 mil 300 mil 48, 56 SMT
TSOP 20 mil 464 - 724 mil 20 .. 48 SMT
TSSOP 25 mil SMT
PQFP 25 - 39 mil SMT

Notes:

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