nec b58944 datasheet

Nec B58944 Datasheet Site

Possible explanations:

Part Number Decoding: What Does "B58944" Mean?

  • If you can't find it:

    NEC parts are often discontinued. Go to Renesas Electronics (they bought NEC) and search their legacy products section.

    Then substitute with a generic LM7805 (TO-220) or LM317 (adjustable) if pinout and current match. Use a multimeter in diode mode to check internal junctions – a regulator will show diode drops between pins. nec b58944 datasheet