NS resistor - do not stuff ?!?!

[SnakeBite]

Hi,
 i saw in some datasheet a resistor that the value is "NS" and the description says "do no stuff" .

WHAT IT MEANS? 

thanks
Ido

[sleemanj]

Hi,
 i saw in some datasheet a resistor that the value is "NS" and the description says "do no stuff" .

WHAT IT MEANS? 

thanks
Ido

It means that part should not be installed on the PCB (by default, it may be required for testing, or some other option).

[SnakeBite]

thanks

[amyk]

I've also seen "DY" used as an abbreviation for "part not installed" --- would be nice to know where that convention came from.

[richard.cs]

I usually see them marked as "DNI" for do not install or "No fit". There are a lot of reasons you might do that, generally when designing a PCB it's good to give yourself the option to make changes to the design in the future without changing the PCB.

You might also see "SOT" for select on test. That's normally a sign that it's either a prototype or a seriously marginal design that needs hand tweaking.

[krivx]

I'm used to DNP for "Do Not Populate". Quite common when you think an amplifier might need a compensation capacitor in the feedback loop but can't be sure until you get the boards and build it, you put in a footprint for safety.

[theatrus]

I've also use POP: Populate OPtion. Usually for multiple designs with the same basic board, or a designed-in-cost-reduction 

[Lizerd]

Another standard is that the component value is "xx" 

[David_AVD]

I've seen DNF (Do Not Fit) and DNP (Do Not Populate) on a number of schematics.

[LukeW]

DNI, NP, DNP, DNF, POP, SOT, DY, NS...

It would be good if we could all come to one single standard for this which is understood worldwide.

[uoficowboy]

DNI, NP, DNP, DNF, POP, SOT, DY, NS...

It would be good if we could all come to one single standard for this which is understood worldwide.

You left out DNS! (do not stuff)

I agree that it'd be nice to have a standard. It seems like each company that I work for has their own standard for this.