2N4851

2N4851-2N4853 High-reliability discrete products and engineering services since 1977 PN UNIJUNCTION TRANSISTOR FEATURES  Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number.  Available as non-RoHS (Sn/Pb plating), standard, and as RoHS by adding “-PBF” suffix. MAXIMUM RATINGS Rating RMS power dissipation RMS emitter current Peak-pulse emitter current Emitter reverse voltage Interbase voltage Operating junction temperature range Storage temperature range Symbol PD Ie ie VB2E VB2B1 TJ Tstg Value 300 50 1.5 30 35 -65 to +125 -65 to +200 Unit mW mA Amp Volts Volts °C °C ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise specified) Rating Part number Symbol Min Typ Max Unit Intrinsic standoff ratio (VB2B1 = 10 V) 2N4851 2N4852, 2N4853 η 0.56 - 0.75 0.70 - 0.85 Interbase resistance (VB2B1 = 3 V, IE = 0) RBB 4.7 - 9.1 kΩ Emitter reverse current (VB2E = 30 V) 2N4851, 2N4852 2N4853 IE...