TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: ( 978) 689-0803
Website: http: //www.microsemi.com
N-CHANNEL J-FET DEPLETION MODE
Equivalent to MIL-PRF-19500/375
T4-LDS-0005 Rev. 1 (063376) Page 2 of 2
DYNAMIC CHARACTERISTICS
Parameters / Test Conditions Symbol Min. Max. Unit
Small-Signal Common Source, Short-Circuit Forward Transfer Admittance
VGS = 0, VDS = 15V dc, f = 1.0kHz 2N3821
2N3822
2N3823
|yfs|1 1500
3000
3500
4500
6500
6500
μS
Small-Signal, Common Source, Short-Circuit Output Admittance
VGS = 0, VDS = 15V dc, f = 1.0kHz 2N3821
2N3822
2N3823 |yos|
10
20
35
μS
Small-Signal, Common-Source Short-Circuit Input Capacitance
VGS = 0V dc, VDS = 15V dc, 100kHz ≤ f ≤ 1.0MHz
Ciss 6.0 pF
Small-Signal, Common-Source Reverse Transfer Capacit ance
VDS = 15V dc, VGS = 0, 100kHz ≤ f ≤ 1.0MHz 2N3821, 2N3822
2N3823 Crss 3.0
2.0 pF
Small-Signal, Common-Source, Short-Circuit Forward Transfer Admittance
VGS = 0, VDS = 15V dc, f = 100MHz
f = 100MHz
f = 200MHz
2N3821
2N3822
2N3823
|yfs|3 1500
3000
3200
μS
Small-Signal, Common-Source Short-Circuit Input Conductance
VGS = 0, VDS = 15V dc, f = 200MHz 2N3823 (only) gis 800 μS
Small-Signal, Common-Source Short-Circuit Output Conductance
VGS = 0, VDS = 15V dc, f = 200MHz 2N3823 (only) gos 200 μS
Common Source Spot Noise Figure
VGS = 0, VDS = 15V dc, RG = 1MΩ
f = 10Hz
f = 1.0kHz
2N3821, 2N3822
2N3821, 2N3822, 2N3823 NF1
5.0
2.0
dB
Common Source Spot Noise Figure
VGS = 0, VDS = 15V dc, RG = 1kΩ
f = 105MHz 2N3823 (only) NF2 2.5 dB