參數(shù)資料
型號(hào): 2N4857A
廠商: Vishay Intertechnology,Inc.
英文描述: N-Channel JFET(最小柵源擊穿電壓-40V,最小飽和漏極電流20mA的N溝道結(jié)型場效應(yīng)管)
中文描述: N溝道場效應(yīng)(最小柵源擊穿電壓- 40V的,最小飽和漏極電流20mA的的N溝道結(jié)型場效應(yīng)管)
文件頁數(shù): 4/5頁
文件大?。?/td> 77K
代理商: 2N4857A
2N4856A/4857A/4858A
4
Siliconix
S-52424—Rev. C, 14-Apr-97
Typical Characteristics (Cont’d)
1 pA
Noise Voltage vs. Frequency
100
10
1
10
100
1 k
100 k
10 k
I
D
= 1 mA
I
D
= 10 mA
V
DG
= 10 V
Forward Transconductance and Output Conductance
vs. Gate-Source Cutoff Voltage
50
g
fs
and g
os
@ V
DS
= 20 V
V
GS
= 0 V, f = kHz
40
0
0
–2
–10
500
300
0
g
f
g
fs
g
os
Gate Leakage Current
0
30
1 nA
100 pA
10 pA
0.1 pA
I
G
T
A
= 125 C
T
A
= 25 C
1 mA
I
GSS
@ 25 C
10 nA
I
D
= 10 mA
Common-Gate Input Admittance
100
10
1
0.1
100
1000
200
500
(
g
ig
b
ig
V
DG
= 10 V
I
D
= 10 mA
T
A
= 25 C
Common-Gate Forward Admittance
Common-Gate Reverse Admittance
100
10
1
0.1
100
1000
200
500
(
–g
fg
b
fg
g
fg
V
DG
= 10 V
I
D
= 10 mA
T
A
= 25 C
10
1
0.1
0.01
100
1000
200
500
V
DG
= 10 V
I
D
= 10 mA
T
A
= 25 C
–g
rg
–b
rg
+g
rg
(
V
DG
– Drain-Gate Voltage (V)
V
GS(off)
– Gate-Source Cutoff Voltage (V)
f – Frequency (Hz)
f – Frequency (MHz)
f – Frequency (MHz)
f – Frequency (MHz)
30
20
10
–4
–6
–8
I
GSS
@ 25 C
10 mA
1 mA
6
12
18
24
400
100
200
I
G(on)
@ I
D
S
g
f
(
e
n
/
)
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