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- 4N39
Small 21 KB PDF covering the 4N39 optocoupler, catalogued as a schematic. The name states only the part number, so the content is most likely a brief datasheet with…
Schematic · 21.0 KB · 2 Aug 2026Schematic pdf—21.0 KB - 4N39-40
A 171 KB PDF for the 4N39 and 4N40 optocouplers, listed under schematics but in practice a component datasheet.
Schematic · 171 KB · 2 Aug 2026Schematic pdf—171 KB