Description
The 1N4007 is the standard 1000V 1A silicon rectifier diode in a DO-41 axial package. Use it to turn transformer AC into DC, as a flyback diode across relay coils and motors, or for reverse-polarity protection. Sold per diode, minimum 10, with lower prices from 25.
Specifications
Datasheets
What’s in the box
The quantity you order, loose in a clear bag with full-length leads.
Great for
Wiring & getting started
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Find the cathode
The silver band is the cathode, the bar of the diode symbol. Current flows from the plain end to the band end.
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Bridge rectifier
Use four diodes. The two band ends that join give DC positive, the two plain ends that join give DC negative, and the transformer goes to the two mixed corners. Expect about 1.4 to 2V lost across the bridge.
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Flyback diode
Fit it across the relay coil or motor with the band to the positive supply. It does nothing in normal running and soaks up the spike at switch-off.
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Solder it in
The leads are up to 0.86mm thick, so use holes of 1mm or more. A diode running near 1A gets warm: give it a decent copper area, as the leads carry its heat away.
Note: The 1N4007 is a standard-recovery diode for 50Hz and 60Hz rectification. For switch-mode supplies and other high-frequency work, use a fast-recovery diode such as the FR107 or FR207, both in our 200-piece diode assortment kit.
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