On Jan 20, 2022, at 02:20, RubenRubio <rubenrb2019@...> wrote:

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Hello Francesco

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In my xref lists I cannot found equivalent, so I did some google search about 1854-0404. Mr. Terrell wrote here in this forum:?

?"Michael A. Terrell

25.11.2018???#92882??

My notes suggest a 2N3904.

"1854-1293 as per Keysight as replacement for 1854-0071 . Part Description: Mod and Ser Nbr Reqd Transistor NPN VCE-25V IC-0.1A PD-0.625W silicon TO-92, Protected Supply 1854-0071 was a generic small signal NPN silicon transistor that was usuallly used wherever a grunt NPN was needed. A 2N3904 would be a good replacement. 1854-0404 was the same device but in a metal can."


Michael A. Terrell"


And for the 1854-0441 I found this web page, that sugest it is a diode and shows some p/n:


Maybe this can help you

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Regards,
Ruben