L series Bolted Silicon Rectifier Diode

Conventional:
LP30, LP35, LP40, LP50, LP60, LP70

Avalanche:
LB30L, LB35L, LB40L, LB50L, LB60L, LB70L,LB30M, LB35M, LB40M, LB50M, LB60M, LB70M, LB30H, LB35H, LB40H, LB50H, LB60H, LB70H

OJ technology, Copper heatsink, Cavity package
Low leakage
High surge current capacity

Polarity 
stands for Anode toward to case
Blue ring (N) stands for Cathode toward to case