2N3819 Datasheet, PDF (5/5 Pages) NXP Semiconductors – N-channel J-FET

2N3819
Vishay Siliconix
TYPICAL CHARACTERISTICS (T_A = 25_C UNLESS OTHERWISE NOTED)
Input Admittance
100
T_A = 25_C
V_DS = 15 V
V_GS = 0 V
Common Source
b_is
Forward Admittance
100
T_A = 25_C
V_DS = 15 V
V_GS = 0 V
Common Source
10
10
g_is
g_fs
–b_is
1
1
0.1
100
200
500
f – Frequency (MHz)
Reverse Admittance
10 _{TA = 25_C}
V_DS = 15 V
V_GS = 0 V
Common Source
–b_rs
1
1000
–g_rs
0.1
0.1
100
200
500
f – Frequency (MHz)
Output Admittance
10
T_A = 25_C
V_DS = 15 V
V_GS = 0 V
b_os
Common Source
1
g_os
1000
0.1
0.01
100
200
500
f – Frequency (MHz)
1000
Equivalent Input Noise Voltage vs. Frequency
20
V_GS(off) = –3 V
V_DS = 10 V
16
12
8
4
0
10
I_D = I_DSS
I_D = 5 mA
100
1k
10 k
f – Frequency (Hz)
100 k
Document Number: 70238
S–04028—Rev. D ,04-Jun-01
0.01
100
200
500
f – Frequency (MHz)
1000
Output Conductance vs. Drain Current
20
V_GS(off) = –3 V
V_DS = 10 V
f = 1 kHz
16
T_A = –55_C
12
8
125_C
25_C
4
0
0.1
1
10
I_D – Drain Current (mA)
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