Hi guys, happy new year!
I'm trying to swap a suspected bad component from an inverter board of lcd aoc monitor. Except the component is not yet available in our city, probably even country. SMD components are hard to find in our country. they have to be imported and I cannot engage in this transaction right now. The part number of the suspected bad component is SM240A. Datasheet says it is a 2.0 amp surface mount schottky barrier rectifier, with 20-100 volts. Please take note of the volts since the second component does not say 20-100 volts in the datasheet, only 20 volts. I am confused why the other one is saying "to one hundred volts" while the other one does not say anything about this rating. Is there a difference between them?
The available schottkly diode here is IN5820. Peak repetitive/recurring reverse voltage is the same. DC blocking voltage is the same also. RMS voltage match also. I checked but not like it really makes a lot of sense to me anyway. The only difference between the IN5820 and SM240A are IN5820 has rating of 3.0 amp and SM240A has 2.0 amp. Voltage looks the same but I cannot find anything saying 20-100 volts in the IN5820 datasheet, compared to SM240A where it was explicitly printed. The 100 volts there is peak voltage right?
Can I use this IN5820 as replacement for SM240A? May I be enlightened why you cannot do this if the answer is is no.
I have another available component of diode, the IN5822. Still 3.0 amp also but with higher voltage starting of 40. It is not saying 40-100 volts again in the datasheet. Can I use this for replacement also? Will appreciate it much if you can explain to my or teach me why you can use and why it's a no--no! If you can use these replacement diodes, what is the explanation and is it safe to use? Just short idea so I may know where to start reading about the subject matter.
Thanks a lot in advance...