All of the above characteristics should be detailed in the datasheet for every diode. For example, this [http://www.vishay.com/docs/81857/1n4148.pdf datasheet] for a 1N4148 diode lists the maximum forward voltage (1V) and the breakdown voltage (100V) (among a lot of other information): | All of the above characteristics should be detailed in the datasheet for every diode. For example, this [http://www.vishay.com/docs/81857/1n4148.pdf datasheet] for a 1N4148 diode lists the maximum forward voltage (1V) and the breakdown voltage (100V) (among a lot of other information): |