TECHNICAL DATA SHEET
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Website: http://www.microsemi.com
T4-LDS-0005 Rev. 2 (101425) Page 2 of 4
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 / UB
2N3822 / UB
2N3823 / UB
|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 / UB
2N3822 / UB
2N3823 / UB
|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 Capacitance
VDS = 15V dc, VGS = 0, 100kHz ≤ f ≤ 1.0MHz 2N3821 / UB
2N3822 / UB
2N3823 / UB
Crss
3.0
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 / UB
2N3822 / UB
2N3823 / UB
|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
2N382, 2N3822 / UB
2N3821, 2N3822, 2N3823 / UB
NF1
5.0
2.0
dB
Common Source Spot Noise Figure
VGS = 0, VDS = 15V dc, RG = 1kΩ
f = 105MHz
2N3823 / UB (only) NF2 2.5 dB