The 1N5913-5956B series of 1.5 watt Zeners provides voltage regulation in a selection from 3.3 to 200 volts with different tolerances as identified by suffix letter on the part. These plastic encapsulated Zeners have moisture classification of Level 1 with no dry pack required. They are also available in various military screening levels by adding a prefix identifier as described in the Features below. The plastic molded Zeners with a P suffix provide a lower thermal resistance (junction to lead) compared to the optional glass body (G suffix) for these same JEDEC part numbers. Both package options are available by Microsemi. Microsemi also offers numerous other Zener products to meet higher or lower power and test-current applications.