SF21 vs SF21--SF28 vs SF21-B

 
PartNumberSF21SF21--SF28SF21-B
DescriptionGlass Passivated Super Fast Rectifier 2A 50V 2-Pin DO-204AC - Tape and Reel (Alt: SF21)Rectifiers 2A 50V 35ns
Manufacturer--Rectron
Product Category--Diodes, Rectifiers - Arrays
Product--Ultra Fast Recovery Rectifiers
Packaging--Bulk
Unit Weight--0.012346 oz
Mounting Style--Through Hole
Package Case--DO-15
Configuration--Single
Maximum Operating Temperature--+ 150 C
Minimum Operating Temperature--- 55 C
Vf Forward Voltage--0.95 V
Vr Reverse Voltage--50 V
Ir Reverse Current--2 uA
If Forward Current--2 A
Max Surge Current--75 A
Recovery Time--35 ns
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