... approx) RoHS CompliantLead Free: Add "LF" suffix to Part Number MODEL: MMSZ5228BSeries: MMSZ5221B - MMSZ5259BZener Voltage(Nom): 3.9VZener ... - MMSZ5259B (2.4V - 39V) Series Type Number: MMSZ5221B,MMSZ5222B,MMSZ5223B,MMSZ5224B,MMSZ5225B,MMSZ5226B,MMSZ5227B,MMSZ5228B,MMSZ5229B ... EU’s standard for green electronic products, ISO9001:2000 Quality Management System and SGS Green Certification System ...