I have a circuit I want to build (LED chaser) that calls for 1N4148 diodes and all I have is N4748A diodes can I use them? Is there a good all around diode I should have in stock?

Thanks

Todd

 

The 1N4148 is a normal silicon diode
The 1N4748A is a 22 V Zener diode

As long as you dont't reverse bias the diode it may work. If you do there will be some surprising results.

BTW. You diid google "1N4748A datasheet" -- didn't you?

 

I did look a the datasheets, but they are over my head. I am a total newbie. I'll find a circuit online and build it. The problem is it dosen't say why to use the components, just use them.

I know that the 1N4748 is a Zener diode. I don't know the deference between that and a normal silicon.

This is what happens all the time. I don't know what to use and get frustrated and give up. Then six months later I'll try again.

Thanks for the help.

Todd

 

Take a look here, it will help you understand the difference between a zener and a normal (rectifier) diode:

http://www.allaboutcircuits.com/vol_3/chpt_3/11.html

 

1N4148/1N914 diodes are great for compact, low-current (<100mA) projects.
1N4001 thru 1N4007 are OK for general purpose 1A power rectifiers.
Radio Shack sells both of them in bubble pack assortments for a buck or two.

Digikey is certainly less expensive; they'll ship SMALL orders via 1st class mail which saves money.