N-Channel JFET & High Frequency Amplifier : FEATURES * Low Capacitance * Up to 6500s Transconductance 2N3821 /2N3822 PIN CONFIGURATION TO-72 5010 . ABSOLUTE MAXIMUM RATINGS (Ta = 25C unless otherwise noted) Gate-Source Voltage .... cece ce eeee. -50V Gate-Orain Voltage: osc occa ee ee -50V G6 CUNO cay ce aaSiinay Seats oe 10mA Storage Temperature Range ............. 65C to +4200C Operating Temperature Range ........... -55C to +175C Lead Temperature (Soldering, 10sec) ............. +300C Powe DSMIOA 56 6:3 ccscaneel acenane koe 300mW Dorataaboye 28C 0. oes ope 2.0mW/C NOTE: Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or aig eee so Snot nied, Coen ae reaaen series of the specifications is not implied. to absolute maximum Fating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (Ta = 25C unless otherwise specified) ORDERING INFORMATION Part Package Temperature Range 2N3821 - Hermetic TO-72 -55C to +175C X2N3821 Sorted Chips in Carriers -55C to +175C 2N3822 Hermetic TO-72 -55C to +175C X2N3822 Sorted Chips in Carriers ~55C to +175C 2N3821 2N3822 SYMBOL PARAMETER UNITS TEST CONDITIONS MIN MAX MIN MAX 01 0.1 nA lass Gate Reverse Current Vas = -30V, Vos = 0 0.1 0.1 pA | Ta = 150C BVass Gate-Source Breakdown Voltage -50 -50 la = -1pA, Vos = 0 Vasion Gate-Source Cutoff Voltage -~4 6 Vv Vos = 15V, Ip = 0.5nA 0.5 2 Vos = 15V, Ip = 50uA Vas Gate-Source Voltage - -1 -4 Vos = 18V, Ip = 200A loss Saturation Drain Current (Note 1) 0.5 25 2 10 mA | Vos = 15V, Ves =0 3-52N3821 / 2N3822 2N3821 /2N3822 ELECTRICAL CHARACTERISTICS (Continued) (Ta = 25C unless otherwise specified) calogic 2N3821 2N3822 SYMBOL PARAMETER UNITS TEST CONDITIONS MIN MAX MIN MAX gis Ce et) 1500 | 4500 | 3000 | 6500 f= 1kHz Common-Source Forward | is | Transadmittance (Note 2) 1500 3000 Hs f = 100MHz Common-Source Output Vos = 15V, Ves = 9 Gos Conductance (Note 1) 20 2 f= 1kHz Common-Source Input Ciss Capacitance (Note 2) 6 6 pF f = iMHz Cc Common-Source Reverse Transfer 3 3 = Capacitance (Note 2) ; ; Vos = 15V, Vas =0, NF Noise Figure (Note 2) 5 5 dB Rigen = meg, BW = SHz f= 10Hz - Equivalent Input Noise Voltage nV | Vos = 15V, Vas =0, @n (Note 2) al 200 | WHz | BW=5Hz NOTES: 1. These parameters are measured during a 2ms interval 100ms after DC power is applied. 2. For design reference only, not 100% tested. 3-6