Quick question regarding the idss...
when measuring this, is there an optimum value to look for? Highest? Lowest?
Thanks,
mm
Hi,
look for lowest.
The Fairchild spec sheet says the lowest IDSS is 2mAs,the max. is at 20mAs.
Have tested a couple of them,arround 40 pieces.
Most where in the range of 10 to 12mAs,none exceeded 14mAs.
I have one with 8,7mAs in my build,and the best I found is at 5,9mAs.
So I think it´s worth to shoot out a bunch of them.They´re cheap and easy to source.Here in germany they are at 15 Euro cents for a single,price will decrease a bit when bought in hundrets or so.
For this I have made a small veroboard for easily testing them.
The pics:


A nice little helper that cost nearly nothing and takes just 5 minutes to solder.
Best,
Udo.