Type Number Max. Zener Impedance Zener Voltage Range1 ZZT @ IZT VZ @ IZT Nom V Min V Max V Max. Reverse Leakage Current ZZK @ IZK VR @ IR mA mA A V 350mW Zener Diodes / SOT-23 MMBZ5221B 2.4 2.28 2.52 30 20 1200 0.25 100 1.0 MMBZ5222B 2.5 2.38 2.63 30 20 1250 0.25 100 1.0 MMBZ5223B 2.7 2.57 2.84 30 20 1300 0.25 75 1.0 MMBZ5225B 3.0 2.85 3.15 30 20 1600 0.25 50 1.0 MMBZ5226B 3.3 3.14 3.47 28 20 1600 0.25 25 1.0 MMBZ5227B 3.6 3.42 3.78 24 20 1700 0.25 15 1.0 MMBZ5228B 3.9 3.71 4.10 23 20 1900 0.25 10 1.0 MMBZ5229B 4.3 4.09 4.52 22 20 2000 0.25 5.0 1.0 MMBZ5230B 4.7 4.47 4.94 19 20 1900 0.25 5.0 2.0 MMBZ5231B 5.1 4.85 5.36 17 20 2000 0.25 5.0 2.0 MMBZ5232B 5.6 5.32 5.88 11 20 1900 0.25 5.0 3.0 MMBZ5234B 6.2 5.89 6.51 7.0 20 1600 0.25 5.0 4.0 MMBZ5235B 6.8 6.46 7.14 5.0 20 1600 0.25 3.0 5.0 MMBZ5236B 7.5 7.13 7.88 6.0 20 1000 0.25 3.0 6.0 MMBZ5237B 8.2 7.79 8.61 8.0 20 750 0.25 3.0 6.5 MMBZ5239B 9.1 8.65 9.56 10 20 500 0.25 3.0 7.0 MMBZ5240B 10 9.50 10.50 17 20 500 0.25 3.0 8.0 MMBZ5241B 11 10.45 11.55 22 20 600 0.25 2.0 8.4 MMBZ5242B 12 11.40 12.60 30 20 600 0.25 1.0 9.1 MMBZ5243B 13 12.35 13.65 13 9.5 600 0.25 0.5 9.9 MMBZ5245B 15 14.25 15.75 16 8.5 600 0.25 0.1 11 MMBZ5246B 16 15.20 16.80 17 7.8 600 0.25 0.1 12 MMBZ5248B 18 17.10 18.90 21 7.0 600 0.25 0.1 14 MMBZ5250B 20 19.00 21.00 25 6.2 600 0.25 0.1 15 MMBZ5251B 22 20.90 23.10 29 5.6 600 0.25 0.1 17 MMBZ5252B 24 22.80 25.20 33 5.2 600 0.25 0.1 18 MMBZ5254B 27 25.65 28.35 41 5.0 600 0.25 0.1 21 MMBZ5255B 28 26.60 29.40 44 4.5 600 0.25 0.1 21 MMBZ5256B 30 28.50 31.50 49 4.2 600 0.25 0.1 23 MMBZ5257B 33 31.35 34.65 58 3.8 700 0.25 0.1 25 MMBZ5258B 36 34.20 37.80 70 3.4 700 0.25 0.1 27 MMBZ5259B 39 37.05 40.95 80 3.2 800 0.25 0.1 30 1. VZ measured @ IZT using a pulse test. IZT pulse width = 5.0ms. Pin Configuration =HQHU 'LRGHV