Translation guide
A diode is an electronic component that allows current to flow in only one direction. In Japanese, the standard term is ダイオード, a loanword from English. It is used in both technical and everyday contexts.
diode
Refer to the semiconductor device that conducts current primarily in one direction.
The most common and standard term for 'diode' in Japanese. Used in electronics, engineering, and everyday conversation about devices.
This circuit needs a diode.
Literally 'rectifier'. This term can refer to a diode used for rectification, but it is less common and more technical. It may also refer to a rectifier circuit or device.
Please don't get the diode's orientation wrong.
整流器としてダイオードを使います。
We use a diode as a rectifier.