My diode is:
VISHAY GENERAL SEMICONDUCTOR 1N4004-E3
Diode Type:Standard Recovery; Repetitive Reverse Voltage Max, Vrrm:400V; Forward Current, If(AV):1A; Forward Voltage Max, VF:1.1V; Forward Surge Current Max, Ifsm:30A; Operating Temperature Ran 78K2120;
- What does "78K2120" mean?
- According to the new reply, it is an identifier but what does it mean? Why is it chosen? Does it contain some information except being a random identifier?
- Is there some standard, seen too many manufacturers just throwing similar lines but with different meaning?