BF988 Vishay, BF988 Datasheet - Page 5
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BF988
Manufacturer Part Number
BF988
Description
Manufacturer
Vishay
Datasheet
1.BF988.pdf
(9 pages)
Specifications of BF988
Application
VHF/UHF
Channel Type
N
Channel Mode
Depletion
Continuous Drain Current
0.03A
Drain Source Voltage (max)
12V
Power Gain (typ)@vds
28@8VdB
Noise Figure (max)
1.5(Typ)dB
Package Type
TO-50
Pin Count
4
Forward Transconductance (typ)
0.024S
Input Capacitance (typ)@vds
2.1@8V@Gate 1/1.2@8V@Gate 2pF
Output Capacitance (typ)@vds
1.05@8VpF
Reverse Capacitance (typ)
0.025@8VpF
Operating Temp Range
-55C to 150C
Mounting
Surface Mount
Number Of Elements
1
Power Dissipation (max)
200mW
Screening Level
Military
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
BF988
Manufacturer:
STANLEY
Quantity:
10 000
Document Number 85007
Rev. 1.6, 15-Apr-05
12815
12818
12819
Figure 7. Output Capacitance vs. Drain Source Voltage
Figure 8. Transducer Gain vs. Gate 1 Source Voltage
Figure 9. Forward Transadmittance vs. Drain Current
–10
–20
–30
–40
–50
4.0
3.2
2.4
1.6
0.8
0.0
32
28
24
20
16
12
10
8
4
0
0
–1.0
0
2
f = 800 MHz
V
f = 1 MHz
DS
4
0
V
–0.5
= 8 V
V
G1S
4
DS
I
8
D
– Drain Source Voltage ( V )
– Gate 1 Source Voltage ( V )
– Drain Current ( mA )
0.0
6
12
1 V
16
0.5
8
V
V
V
f = 1 MHz
20
G2S
G2S
G1S
V
G2S
1.0
10
= 4 V
= –0.8 V
= 0
24
–0.2 V
–0.4 V
= 4 V
2 V
3 V
4 V
3 V
1 V
2 V
0
1.5
28
12
12820
12821
12822
Figure 11. Short Circuit Forward Transfer Admittance
–10
–15
–20
–25
–30
–35
–40
20
18
16
14
12
10
–5
8
6
4
2
0
5
0
9
8
7
6
5
4
3
2
1
0
0.00
0
0
Figure 12. Short Circuit Output Admittance
Figure 10. Short Circuit Input Admittance
f = 100...1300 MHz
20 mA
100 MHz
4
100 MHz
V
0.25
V
2
400 MHz
G2S
DS
10 mA
I
= 8 V
8
400 MHz
D
= 4 V
700 MHz
1300 MHz
4
= 5 mA
0.50
f = 1300 MHz
12
Re (y
Re (y
Re (y
f = 1300 MHz
6
700 MHz
0.75
11
16
21
22
Vishay Semiconductors
1000 MHz
f = 100...1300 MHz
) ( mS )
) ( mS )
) ( mS )
f = 100...1300 MHz
8
1000 MHz
20
1000 MHz
V
I
1.00
V
V
I
V
D
D
G2S
DS
G2S
DS
= 10 mA
10
f = 100 MHz
=10 mA
24
= 15 V
= 8 V
= 4 V
= 4 V
700 MHz
400 MHz
1.25
12
28
1.50
14
32
BF988
www.vishay.com
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