I could not find the meaning of DO-254 which is a military standard (not component package). Do you know that the expansion of DO letters?

  • \$\begingroup\$ Are you referring to the diode package? \$\endgroup\$ – ThreePhaseEel Jul 21 '17 at 22:17
  • \$\begingroup\$ It's a safety of flight standard for hardware (airborne electronics) \$\endgroup\$ – vicatcu Jul 21 '17 at 23:04
  • \$\begingroup\$ complex hardware \$\endgroup\$ – JonRB Jul 22 '17 at 20:40


Document, from RTCA


  • \$\begingroup\$ Compare to TO-220... \$\endgroup\$ – ThreePhaseEel Jul 21 '17 at 22:15
  • \$\begingroup\$ @ThreePhaseEel: Nope. en.wikipedia.org/wiki/DO-254 \$\endgroup\$ – Ignacio Vazquez-Abrams Jul 21 '17 at 22:15
  • \$\begingroup\$ Oh, I see -- since this was EE.SE I was assuming someone was scratching their head over a package number...:P \$\endgroup\$ – ThreePhaseEel Jul 21 '17 at 22:16
  • \$\begingroup\$ @ThreePhaseEel: Me too, until I double-checked. \$\endgroup\$ – Ignacio Vazquez-Abrams Jul 21 '17 at 22:16

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