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I'm planning to use one of this diode in my circuit. But the package contains two of them. I chose it mainly because of its 3ns reverse recovery time. How do I use them in my circuit?

I have three options in my mind if you won't suggest a forth one.

  1. Use one, leave the other open.
  2. Connect them parallel.
  3. Use one, connect the unused device pin to a rail with a very large resistor.

How do I get the best switching characteristics?

  • 1
    \$\begingroup\$ I was going to say option 2 until I read that you chose the part for its RR. \$\endgroup\$ – Ignacio Vazquez-Abrams Oct 30 '14 at 20:54
  • 5
    \$\begingroup\$ 4. Use one and short the unused anode to the cathode. \$\endgroup\$ – brhans Oct 30 '14 at 20:58
  • 1
    \$\begingroup\$ Yep, I was just about to mention that. \$\endgroup\$ – Ignacio Vazquez-Abrams Oct 30 '14 at 20:59
  • \$\begingroup\$ @brhans Why don't you post it as an answer along with a little explanation? \$\endgroup\$ – hkBattousai Oct 30 '14 at 21:02
  • 3
    \$\begingroup\$ Make sure that you use the diode on the left, so that you can substitute the single-diode part. (which seems to be more widely available than common-cathode anyway.) \$\endgroup\$ – markrages Oct 30 '14 at 21:30

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