VISHAY BF970 Technical data
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Silicon PNP Planar RF Transistor
Applications
UHF oscillator and mixer stages.
Features
D
High gain
D
Low noise
3
2
BF970
Vishay Telefunken
Electrostatic sensitive device.
Observe precautions for handling.
94 9308
1
13623
BF970 Marking: BF970
Plastic case (TO 50)
1 = Collector, 2 = Base, 3 = Emitter
Absolute Maximum Ratings
T
= 25_C, unless otherwise specified
amb
Parameter Test Conditions Symbol Value Unit
Collector-base voltage –V
Collector-emitter voltage –V
Emitter-base voltage –V
Collector current –I
Total power dissipation T
≤ 60 °C P
amb
Junction temperature T
Storage temperature range T
CBO
CEO
EBO
C
tot
j
stg
40 V
35 V
3 V
30 mA
300 mW
150
–55 to +150
Maximum Thermal Resistance
T
= 25_C, unless otherwise specified
amb
Parameter T est Conditions Symbol Value Unit
Junction ambient on glass fibre printed board (40 x 25 x 1.5) mm
plated with 35mm Cu
3
R
thJA
300 K/W
°
C
°
C
Document Number 85005
Rev. 3, 20-Jan-99
www.vishay.de • FaxBack +1-408-970-5600
1 (5)
BF970
Vishay Telefunken
Electrical DC Characteristics
T
= 25_C, unless otherwise specified
amb
Parameter Test Conditions Symbol Min Typ Max Unit
Collector cut-off current –VCE = 40 V, VBE = 0 –I
Collector-base cut-off current –VCB = 20 V, IE = 0 –I
Emitter-base cut-off current –VEB = 2 V, IC = 0 –I
Collector-emitter breakdown voltage –IC = 1 mA, IB = 0 –V
DC forward current transfer ratio –VCE = 10 V, –IC = 3 mA h
Electrical AC Characteristics
T
= 25_C, unless otherwise specified
amb
CES
CBO
EBO
(BR)CEO
FE
100mA
100 nA
10
m
35 V
25 50 90
A
Parameter Test Conditions Sym-
Transition frequency –VCE = 10 V, –IC = 3 mA, f = 300 MHz f
Collector-base capacitance –VCB = 10 V, f = 1 MHz C
Noise figure –VCE = 10 V, –IC = 3 mA, ZS = 50 W,
f = 800 MHz
Power gain –VCE = 10 V, –IC = 3 mA, ZL = 500 W,
f = 800 MHz
Collector current for G
pbmax
–VCE = 10 V, ZL = 500 W, f = 800 MHz –I
Min Typ Max Unit
bol
T
cb
1000 MHz
0.4 pF
F 4.2 5.0 dB
G
13 14.5 dB
pb
C
5 mA
www.vishay.de • FaxBack +1-408-970-5600
2 (5)
Document Number 85005
Rev. 3, 20-Jan-99
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