I'm out of 1n5817 reverse polarity diodes, can I use another schottky?

[xefned]

Hi folks, I've got some Intelligent Relay Bypass Modules to build and discovered I ran out of 1n5817s.

I have a bunch of other Schottky diodes with values ranging from 4v to 40v Can I use any of those assuming they're rated for over 9v?

Or should I hold my horses and order the correct part?

 

[steviejr92]

I can send you some dude. Pm me

 

[benny_profane]

1n5817 is rated for 20v reverse. Anything bigger than that is fine.

 

[phi1]

You can jumper on D1 it if it’s for you and you trust yourself to only use center neg 9v. Leaving D2 open should be fine, it’s kind of a protection for a weird hookup scenario I think. Better yet, solder in sockets. For now, jumper D1 and leave D2 open, then when you get the parts, solder them into the socket.

 

[xefned]

I can send you some dude. Pm me

You guys are seriously the nicest people on the internet. Fig's generosity seems to be contagious.
I have so many diodes of various kinds that I *should* be able to pull this off. But don't think I don't appreciate the offer. Super nice of you!
Thank you, Stevie.

1n5817 is rated for 20v reverse. Anything bigger than that is fine.

OK, I just realized most of these are labeled "Zener" diodes, not Shottky diodes.

But the Shottkys I have are labeled "BAT85" with a reverse voltage of 30v, and a "very low forward voltage" (less than 0.5v) according to the datasheet. Any problem using these you think?

 

[steviejr92]

You guys are seriously the nicest people on the internet. Fig's generosity seems to be contagious.
I have so many diodes of various kinds that I *should* be able to pull this off. But don't think I don't appreciate the offer. Super nice of you!
Thank you, Stevie.



OK, I just realized most of these are labeled "Zener" diodes, not Shottky diodes.

But the Shottkys I have are labeled "BAT85" with a reverse voltage of 30v, and a "very low forward voltage" (less than 0.5v) according to the datasheet. Any problem using these you think?

Dude its never a problem this community has given to me in so many ways that i have to pay it forward! If you need em ill send em it wouldnt be problem!

 

[benny_profane]

But the Shottkys I have are labeled "BAT85" with a reverse voltage of 30v, and a "very low forward voltage" (less than 0.5v) according to the datasheet. Any problem using these you think?

BAT85 would be fine.

 

[Robert]

As mentioned above, you can omit D2.

1N5817 isn't mission critical in this case, the regulator is dropping the voltage down to 5V anyway so losing a few extra tenths across D1 won't hurt a thing.

1N4001 - 1N4008 or even 1N4148 would work fine.

 

[xefned]

…the regulator is dropping the voltage down to 5V anyway so losing a few extra tenths across D1 won't hurt a thing …

OK, I laughed at how much I'm fretting about small things. But I appreciate you all took the time to help me think through it.

A low-drop zener is probably more crucial on a board with a 9v regulator, like the basic relay bypass board because it can't afford to lose too much voltage.

I have a buttload of 1N4007 so I'll use those for D2.
And use the BAT85 for D1.

Thanks for all the advice, friends.