DIODE, ZENER, 3.9V, 0.3W; Zener Voltage Vz Typ:3.9V; Power Dissipation Pd:300mW; Operating Temperature Range:-; Diode Case Style:SOT-23; No. of Pins:3; SVHC:No SVHC (18-Jun-2012); Junction Temperature Tj Max:150°C; Junction Temperature Tj Min:-55°C; Package / Case:SOT-23; Power Dissipation Max:225mW; Power Dissipation Ptot Max:300mW; Termination Type:SMD; Test Current:20mA; Tolerance:5%