Fairchild J201

[chumpito]

I'm attempting a pcb design for jinx and up until now I assumed the pinouts for all transistors was the same regardless of manufacturer.  Is this a mistake with the data sheet or is this a common thing?
Fairchild
Vishay

I'm not sure what kind I have :?

[Elektrojänis]

To me it looks like they are the same... Am I blind?

[nightingale]

that  is pretty common pinout IMO~
the only j201's that i have not had to "cross the legs"... were a batch i got from smallbear..
hth,[/i]

[chumpito]

that  is pretty common pinout IMO~

Does that mean you're saying that it's a common occurance or that one of them is the common pinout? :?

the only j201's that i have not had to "cross the legs"... were a batch i got from smallbear..

Well at least I wouldn't have to cross the pins with this one, just reverse it, but still, if I were a manufacturer that would seem like a ridculous thing to have to deal with whenever you get in a new shipment of transistors.

[spongebob]

The Vishay datasheet shows it from the top, maybe that's what's causing the confusion... holding them with the pins down, facing the flat side, it's D - S - G for both of them, or am I blind too?

[niftydog]

I'm with spongebob, that Vishay datasheet is terrible! Top view makes it confusing.

Pins down, looking at the flat side they're both DSG.

[chumpito]

The Vishay datasheet shows it from the top...

DOOH! Top view. :oops:

[Mike Burgundy]

Be warned though - some manufacturers DO differ for some BJ's and (...)FETS.
It's rare IMHO - only come across an occurrence of different pinout than the "whatever brand" sheet I had lying around myself- but  it does happen. Frustrating.

[Peter Snowberg]

I've seen more than one PCB that had pads for two pinouts of the same transistor. If you're making a PCB layout, it's worth thinking about.

[Paul Perry (Frostwave)]

I've seen more than one PCB that had pads for two pinouts of the same transistor. If you're making a PCB layout, it's worth thinking about.

I bet you do it for multiturn trimpots too, right? :wink:

[mikeb]

Rick L made a good suggestion to me - use an inline arrangement for FETs and BJTs so that a) different pinouts can be accomodated and b) those snap-off IC pins can be used as sockets (100 mil spacing) and hence different parts experimented with.

Mike