photodiode bpw34 miniature solar cell SMD BPW34 Series Photodiodes SMD The BPW34 series, from Vishay Semiconductor, are silicon PIN photodiodes. They are in clear plastic miniature packages with a flat top. The BPW34 photodiodes are sensitive to visible and near IR radiation. They are suitable for high speed photo detector applications. Features of the BPW34 photodiodes: T Radiant sensitive area: 7.5 mm² High photo sensitivity High radiant sensitivity Fast response times Angle of half intensity: 65°