♦ Silicon Planar Power Zener Diodes ♦ Standard Zener voltage tolerance is ± 5% with a “B” suffix. Other tolerances are available upon request. ♦ These diodes are also available in Mini-MELF case with the designation ZMM5225 ... ZMM5267, DO-35 case with type designation 1N5225 ... 1N5267 and SOT-23 c.