BF244ARL1 [ONSEMI]
UHF BAND, Si, N-CHANNEL, RF SMALL SIGNAL, JFET, TO-92, CASE 29-11, TO-226AA, 3 PIN;型号: | BF244ARL1 |
厂家: | ONSEMI |
描述: | UHF BAND, Si, N-CHANNEL, RF SMALL SIGNAL, JFET, TO-92, CASE 29-11, TO-226AA, 3 PIN |
文件: | 总5页 (文件大小:252K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
ON Semiconductort
BF245A
BF245B
JFET VHF/UHF Amplifiers
N–Channel — Depletion
MAXIMUM RATINGS
Rating
Drain–Source Voltage
Symbol
Value
±30
30
Unit
Vdc
V
DS
DG
GS
Drain–Gate Voltage
Gate–Source Voltage
Drain Current
V
V
Vdc
1
2
3
30
Vdc
BF244A, BF244B
CASE 29–11, STYLE 22
TO–92 (TO–226AA)
I
D
100
10
mAdc
mAdc
Forward Gate Current
I
G(f)
Total Device Dissipation @ T = 25°C
Derate above 25°C
P
D
350
2.8
mW
mW/°C
A
Storage Channel Temperature Range
T
stg
–65 to +150
°C
3 DRAIN
3 DRAIN
1
2
3
BF245, BF245A,
BF245B, BF245C
CASE 29–11, STYLE 23
TO–92 (TO–226AA)
2
1
GATE
GATE
STYLE 22
STYLE 23
1 SOURCE
2 SOURCE
ELECTRICAL CHARACTERISTICS (T = 25°C unless otherwise noted)
A
Characteristic
Symbol
Min
Typ
Max
Unit
OFF CHARACTERISTICS
Gate–Source Breakdown Voltage
V
30
—
—
Vdc
Vdc
(BR)GSS
(I = 1.0 µAdc, V = 0)
G
DS
Gate–Source
V
GS
(1)
(V = 15 Vdc, I = 200 µAdc)
BF245
0.4
0.4
1.6
3.2
—
—
—
—
7.5
2.2
3.8
7.5
DS
D
(2)
BF245A, BF244A
BF245B, BF244B
BF245C
Gate–Source Cutoff Voltage
(V = 15 Vdc, I = 10 nAdc)
V
GS(off)
–ā0.5
—
–ā8.0
Vdc
DS
D
Gate Reverse Current
(V = 20 Vdc, V = 0)
I
—
—
5.0
nAdc
GSS
GS
DS
ON CHARACTERISTICS
Zero–Gate–Voltage Drain Current
I
mAdc
DSS
(1)
(V = 15 Vdc, V = 0)
BF245
2.0
2.0
6.0
12
—
—
—
—
25
6.5
15
25
DS
GS
(2)
BF245A, BF244A
BF245B, BF244B
BF245C
1. On orders against the BF245, any or all subgroups might be shipped.
2. On orders against the BF244A, any or all subgroups might be shipped.
Semiconductor Components Industries, LLC, 2001
332
Publication Order Number:
June, 2001 – Rev. 0
BF245A/D
BF245A BF245B
ELECTRICAL CHARACTERISTICS (T = 25°C unless otherwise noted) (Continued)
A
Characteristic
Symbol
Min
Typ
Max
Unit
SMALL–SIGNAL CHARACTERISTICS
Forward Transfer Admittance
Output Admittance
(V = 15 Vdc, V = 0, f = 1.0 kHz)
Y
fs
3.0
—
—
—
—
—
—
—
—
40
6.5
—
—
—
—
—
—
—
mmhos
mmhos
mmhos
mmhos
pF
DS
GS
(V = 15 Vdc, V = 0, f = 1.0 kHz)
Y
os
DS
GS
Forward Transfer Admittance
Reverse Transfer Admittance
Input Capacitance
(V = 15 Vdc, V = 0, f = 200 MHz)
Y
5.6
1.0
3.0
0.7
0.9
700
DS
GS
fs
rs
(V = 15 Vdc, V = 0, f = 200 MHz)
Y
DS
GS
(V = 20 Vdc, –V = 1.0 Vdc)
C
DS
GS
iss
rss
oss
Reverse Transfer Capacitance
Output Capacitance
(V = 20 Vdc, –V = 1.0 Vdc, f = 1.0 MHz)
C
pF
DS
GS
(V = 20 Vdc, –V = 1.0 Vdc, f = 1.0 MHz)
C
pF
DS
GS
(3)
Cut–off Frequency
(V = 15 Vdc, V = 0)
F
(Yfs)
MHz
DS
GS
3. The frequency at which g is 0.7 of its value at 1 kHz.
fs
COMMON SOURCE CHARACTERISTICS
ADMITTANCE PARAMETERS
(VDS = 15 Vdc, Tchannel = 25°C)
30
20
5.0
3.0
2.0
b
@ I
DSS
10
7.0
5.0
is
b
rs
@ I
DSS
1.0
0.7
0.5
0.25 I
DSS
3.0
2.0
g
is
@ I
DSS
0.3
0.2
g
is
@ 0.25 I
DSS
1.0
0.7
0.5
0.1
g
rs
@ I , 0.25 I
DSS
DSS
b
is
@ 0.25 I
DSS
0.07
0.05
0.3
10
20 30
50 70 100
200 300
1000
10
20 30
50 70 100
200 300
1000
500 700
500 700
f, FREQUENCY (MHz)
f, FREQUENCY (MHz)
Figure 1. Input Admittance (yis)
Figure 2. Reverse Transfer Admittance (yrs)
20
10
10
5.0
b
os
@ I and 0.25 I
DSS DSS
7.0
5.0
2.0
1.0
g
fs
@ I
DSS
g
fs
@ 0.25 I
DSS
3.0
2.0
0.5
0.2
0.1
g
@ I
DSS
os
1.0
0.7
0.5
|b | @ I
fs
DSS
0.05
|b | @ 0.25 I
fs
DSS
g
@ 0.25 I
DSS
os
0.02
0.01
0.3
0.2
10
20 30
50 70 100
200 300
1000
10
20 30
50 70 100
200 300
1000
500 700
500 700
f, FREQUENCY (MHz)
f, FREQUENCY (MHz)
Figure 3. Forward Transadmittance (yfs)
Figure 4. Output Admittance (yos)
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333
BF245A BF245B
COMMON SOURCE CHARACTERISTICS
S–PARAMETERS
(VDS = 15 Vdc, Tchannel = 25°C, Data Points in MHz)
30°
20°
10°
0°
350°
340°
330°
30°
20°
10°
0°
350°
340°
330°
I
= 0.25 I
100
D
DSS
1.0
40°
50°
40°
50°
0.4
320°
310°
32
31
200
300
100
200
0.9
0.8
0.7
0.6
0.3
400
500
600
700
800
I
D
= I , 0.25 I
DSS
DSS
800
300
900
700
500
0.2
0.1
I
D
= I
DSS
60°
70°
300°
290°
60°
70°
30
29
400
500
600
400
300
200
600
80°
90°
280°
270°
260°
80°
90°
28
27
26
0.0
700
800
900
900
100
100°
100°
110°
120°
250°
240°
110°
120°
25
24
130°
140°
230°
220°
130°
140°
23
22
150°
30°
160°
20°
170°
180°
190°
200°
210°
330°
150°
30°
160°
20°
170°
180°
190°
200°
340°
210°
330°
Figure 5. S11s
Figure 6. S12s
10°
0°
350°
340°
10°
0°
100
1.0
100
350°
200
I
D
= 0.25 I
DSS
300
40°
50°
40°
50°
320°
310°
32
31
400
500
600
700
800
200
300
400
500
600
0.9
0.6
0.5
0.4
0.3
I
D
= I
DSS
700
800
900
900
0.8
0.7
0.6
60°
70°
300°
290°
60°
70°
30
29
900
800
800
900
80°
90°
280°
270°
260°
80°
90°
28
27
26
700
600
500
400
I
D
= 0.25 I
DSS
700
600
500
400
0.3
0.4
0.5
0.6
100°
100°
100
110°
120°
300
250°
240°
110°
120°
25
24
200
100
300
I
D
= I
DSS
200
130°
140°
230°
220°
130°
140°
23
22
150°
160°
170°
180°
190°
200°
210°
150°
160°
170°
180°
190°
200°
210°
Figure 7. S21s
Figure 8. S22s
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334
BF245A BF245B
COMMON GATE CHARACTERISTICS
ADMITTANCE PARAMETERS
(VDG = 15 Vdc, Tchannel = 25°C)
0.5
20
0.3
0.2
10
7.0
5.0
b
rg
@ I
DSS
g
@ I
DSS
ig
0.1
0.07
0.05
3.0
2.0
g
rg
@ 0.25 I
DSS
0.25 I
DSS
0.03
0.02
1.0
0.7
0.5
b
ig
@ I
DSS
0.01
b
ig
@ 0.25 I
DSS
g
ig
@ I , 0.25 I
DSS
DSS
0.3
0.2
0.007
0.005
10
20 30
50 70 100
200 300
1000
10
20 30
50 70 100
200 300
1000
500 700
500 700
f, FREQUENCY (MHz)
f, FREQUENCY (MHz)
Figure 9. Input Admittance (yig)
Figure 10. Reverse Transfer Admittance (yrg)
10
1.0
0.7
0.5
g
fg
@ I
DSS
b
og
@ I , 0.25 I
DSS DSS
7.0
5.0
3.0
2.0
g
fg
@ 0.25 I
0.3
0.2
DSS
1.0
0.1
0.7
0.5
0.07
0.05
g
og
@ I
DSS
b
fg
@ I
DSS
0.3
0.2
0.03
0.02
b
rg
@ 0.25 I
DSS
g
og
@ 0.25 I
DSS
0.1
0.01
10
20 30
50 70 100
200 300
1000
10
20 30
50 70 100
200 300
1000
500 700
500 700
f, FREQUENCY (MHz)
f, FREQUENCY (MHz)
Figure 11. Forward Transfer Admittance (yfg)
Figure 12. Output Admittance (yog)
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335
BF245A BF245B
COMMON GATE CHARACTERISTICS
S–PARAMETERS
(VDS = 15 Vdc, Tchannel = 25°C, Data Points in MHz)
30°
20°
10°
0°
350°
340°
330°
30°
20°
10°
0°
350°
340°
330°
0.7
40°
50°
40°
50°
320°
310°
0.04
32
31
I
= 0.25 I
DSS
D
100
200
200
300
0.6
100
0.03
0.02
0.01
0.0
400
500
600
700
300
DSS
0.5
400
500
600
60°
70°
300°
290°
60°
70°
30
29
800
900
I
= I
D
0.4
0.3
700
80°
90°
280°
270°
260°
80°
90°
28
27
26
800
900
100
500
600
600
100°
100°
I
D
= 0.25 I
DSS
I
D
= I
DSS
700
110°
120°
250°
240°
110°
120°
25
24
0.01
700
800
800
0.02
0.03
900
130°
140°
230°
220°
130°
140°
23
22
900
0.04
150°
30°
160°
20°
170°
180°
190°
200°
210°
150°
30°
160°
20°
170°
180°
190°
200°
210°
330°
Figure 13. S11g
Figure 14. S12g
10°
0°
350°
340°
330°
10°
0°
1.5
1.0
350°
300
340°
500
0.5
40°
50°
40°
50°
320°
310°
32
31
200
400
700
100
600
100
800
900
0.4
0.9
0.8
0.7
0.6
I
D
= I
DSS
I
D
= I , 0.25 I
DSS
100
DSS
0.3
0.2
60°
70°
300°
290°
60°
70°
30
29
I
D
= 0.25 I
DSS
80°
90°
280°
270°
260°
80°
90°
28
27
26
0.1
900
900
100°
100°
110°
120°
250°
240°
110°
120°
25
24
130°
140°
230°
220°
130°
140°
23
22
150°
160°
170°
180°
190°
200°
210°
150°
160°
170°
180°
190°
200°
210°
Figure 15. S21g
Figure 16. S22g
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336
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