4148 vs IN4148

[Ctrl4Smilerz]

They say there is no such thing as a stupid question but there are plenty of inquisitive idiots. I'm work on my order list for a couple of projects and on the the PyroCumulus Fuzz the PCB calls for both 4148 and IN4148. I thought they were the same thing, but please educate me...

 

[fig]

They are they same. Looks like the screen print didn't fit.

 

[swyse]

As fig said probably just a silk screen thing. Diodes and transistors are the worst to make footprints for, they are so tiny with such long names, I have a PCB where I made it just the component values instead of designators and 4148/1588 were all I could fit in a do-35 footprint.

 

[Ctrl4Smilerz]

They are they same. Looks like the screen print didn't fit.

Thanks, glad to see you back!

 

[DAJE]

They say there is no such thing as a stupid question but there are plenty of inquisitive idiots. I'm work on my order list for a couple of projects and on the the PyroCumulus Fuzz the PCB calls for both 4148 and IN4148. I thought they were the same thing, but please educate me...

That's 1N, not IN. Getting this stuff right is important if you're running searches.

 

[mybud]

That's 1N, not IN. Getting this stuff right is important if you're running searches.

The N-designation (as in 1N, 2N) refers to the number of 'diode junctions,' so that 1N represents diodes and 2N transistors, hence Beefheart's saying 'Fast and bulbous, also a 2N teardrop.'

I'll let myself out, shall I?

*Massive collective sigh of relief ensues from rest of forum*

 

[Feral Feline]

That's good info there @mybud !

I knew 1N always referred to diodes, and 2N to transistors — just through long-term usage/exposure — but I never stopped to figure out the "number of diode junctions" reasoning.

Thanks!