Ha, No, I suggested that to the engineer already and its not an option unfortunately...but thanks...Welcome to the forum. Maybe flip it upside down and hand solder it?
Revise the board to correct the mistake?Usually its the other way around but the designer reversed this by accident.
Yes, well, that's the last choice if there's no available part ....cheersRevise the board to correct the mistake?
If order enough parts and pay a setup fee, the manufacturer would probably make some with the pinout your engineer designed for.Yes, well, that's the last choice if there's no available part
Fortunately all MOSFETs I know have no variations on the pinning. Fortunate for me, unfortunate for your designer.Hi ,
Just wondering if there is an N-FET sot-23 package on the market that has the source on pin 1 and gate on pin 2?
Usually its the other way around but the designer reversed this by accident.
Many thanks
R
This is a wonderful example of why we should all pay very, very serious, quiet & careful attention to pinouts when creating parts inside our favourite schematic-capture/board-layout software. IMHO, you are now committed to redoing the card layout, but only AFTER you fix the FET pinout confusion, and DELETE the wrong part from your libraries. One hopes you haven't already spent serious money on a big batch of erroneous boards. BTW, it is your engineer that needs to revise his parts - don't do it yourself - let him fully experience the consequences of being sloppy. But don't feel too badly about this - we have all done it, but hopefully only once. We learn best from our mistakes...Ha, No, I suggested that to the engineer already and its not an option unfortunately...but thanks...
Wrong approach: never make a designer review his/her own work. This is exactly how errors slip.This is a wonderful example of why we should all pay very, very serious, quiet & careful attention to pinouts when creating parts inside our favourite schematic-capture/board-layout software. IMHO, you are now committed to redoing the card layout, but only AFTER you fix the FET pinout confusion, and DELETE the wrong part from your libraries. One hopes you haven't already spent serious money on a big batch of erroneous boards. BTW, it is your engineer that needs to revise his parts - don't do it yourself - let him fully experience the consequences of being sloppy. But don't feel too badly about this - we have all done it, but hopefully only once. We learn best from our mistakes...
Thanks for your reply. You are precisely correct - no-one can proof-read their own work. I was only suggesting that the engineer in this story should spend HIS time fixing HIS goof before he hands it off for proofing. Consequences are best felt by the individual closest to the error. My apologies if I didn't make that clear enough. The whole team on this project need to consciously revise their design review process. Getting things fully correct in our business requires serious attention to detail, and if you're not at least a little OCD you are in the wrong job...Wrong approach: never make a designer review his/her own work. This is exactly how errors slip.
A reasonable review process (anything else is just a waste of time) involves at least one 2nd person with an independent mindset.
The same happened to me. Wouldn't have mattered for a RAM, but it was at the EPROM .Once I laid out an MCU board and got all D0-D7 data bits swapped!
That was the days before real CAD and schematic capture.
And I did much the same in 1983, but deliberately to facilitate the layout. Bishop Graphics sticky pad sets & cyan/magenta tape on thin mylar sheet taped to a light table with a translucent tenth-inch grid. The good old days {LOL}... But it then took me several days to work up a Forth program to do the address bit rotations for the EPROM holding my lookup/translate tables & so on. Never again! Win some, lose some.The same happened to me. Wouldn't have mattered for a RAM, but it was at the EPROM .
For the first version, the colleague wrote a small software to swap bits.
I only had the data lines connected numbered the wrong way. Resulted from having the auto-increment/-decrement of Orcad SDT set to the non-appropriate mode (which was absolutely correct previously when connecting the address lines).And I did much the same in 1983, but deliberately to facilitate the layout. Bishop Graphics sticky pad sets & cyan/magenta tape on thin mylar sheet taped to a light table with a translucent tenth-inch grid. The good old days {LOL}... But it then took me several days to work up a Forth program to do the address bit rotations for the EPROM holding my lookup/translate tables & so on. Never again! Win some, lose some.