Are 1N4118 and 1N4148 interchangeable?

[StephanCOH]

Will a 1N4148 work as a replacement for a 1N4118 or vice versa? I think I ordered a 4118 while the BOM says I should use a 4148.

 

[Gordo]

I don't believe so. The 4148 is a small signal switching diode and the 4118 is a 27v zener. The 1N914 is a suitable replacement for an 4148 if you have any of those kicking around.

 

[Robert]

1N4118 is a 27V zener diode so it's definitely not a substitute across the board, but if these are being used as clipping diodes (which I assume they are?) then the 1N4118 will work if you don't have anything else.

Inversely however, if the circuit called for the 1N4118 you would not want to use the 1N4148.

 

[StephanCOH]

Thanks guys.

The circuit calls for a 1n4148. I think it may be a clipping diode since it sits right beside a BS170.
I'll try to get a 1n914 then.