Diode in SERIES with Relay Coil

[mech_eng]

What would be a good diode to prevent a NO relay from closing when reverse polarity is applied to a circuit via a drunk wiring said circuit by placing a diode in series with the coil, assuming relay current is less than 300mA?

Note: This is NOT for back EMF protection, just trying to prevent frying a SABERTOOTH if  wired up backwards and flip on the switch which controls a relay

[Grumpy_Mike]

Use a series diode rather than a parallel one. To minimise voltage drop use a Shockley diode.
http://en.wikipedia.org/wiki/Shockley_diode

[Henry_Best]

Use a series diode rather than a parallel one. To minimise voltage drop use a Shockley diode.
http://en.wikipedia.org/wiki/Shockley_diode

Did you really mean a Shockley diode or did you mean a Schottky diode?

[Grumpy_Mike]

Use a series diode rather than a parallel one. To minimise voltage drop use a Shockley diode.
http://en.wikipedia.org/wiki/Shockley_diode

Did you really mean a Shockley diode or did you mean a Schottky diode?

OK
http://en.wikipedia.org/wiki/Schottky_diode
I am dyslexic.

[PeterH]

I haven't got my head around the circuit that this would be protecting, but if you want to arrange that a solenoid can be operated by a forward voltage but not a reverse voltage then a series diode seems to me to be a sensible way to do it.

[Henry_Best]

Use a series diode rather than a parallel one. To minimise voltage drop use a Shockley diode.
http://en.wikipedia.org/wiki/Shockley_diode

Did you really mean a Shockley diode or did you mean a Schottky diode?

OK
http://en.wikipedia.org/wiki/Schottky_diode
I am dyslexic.

So is my son, so you have my sympathy.