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Sb390 equivalent replacement

Mandela

Nov 30, 2022
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Nov 30, 2022
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I am repairing a dvd/vcr which needs a diode replaced. Specifically the sb390 (schottky barrier diode, 3A, 90V). I cannot find one online without ordering from outside of the US with ridiculous shipping rates. Does anyone know if a sb3100 (3A, 100V) would be an equivalent replacent? Being that it is only a 10v difference. Thank in advance.
 

bertus

Moderator
Nov 8, 2019
2,792
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Nov 8, 2019
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Hello,

Diodes with higher current and/or voltage ratings can be used.

Bertus
 

kellys_eye

Jun 25, 2010
5,296
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Jun 25, 2010
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5,296
High speed rectifiers can be found very easily. The 1N4*** series are rated at 1A and the 1N54** at 3A and BOTH versions are available as UF(4 or 54)*** coding for the 'ultra-fast' versions.

i.e. UF5402 = 100V @ 3A
i.e. UF4007 = 1000V @ 1A

etc
 
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