Vishay Telefunken BF579R, BF579 Datasheet
Silicon PNP Planar RF Transistor
Electrostatic sensitive device.
Observe precautions for handling.
Applications
UHF/VHF uncontrolled prestages with low noise and
low cross modulation.
Features
D
High transition frequency
D
Low distortion
BF579/BF579R
Vishay Telefunken
1
94 9280
23
BF579 Marking: G7
Plastic case (SOT 23)
1 = Collector, 2 = Base, 3 = Emitter
13 581
BF579R Marking: GG
Plastic case (SOT 23)
1 = Collector, 2 = Base, 3 = Emitter
1
9510527
23
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
Junction temperature T
Storage temperature range T
≤ 60 °C P
amb
CBO
CEO
EBO
C
tot
j
stg
13 581
20 V
20 V
3 V
25 mA
200 mW
150
–55 to +150
°
C
°
C
Maximum Thermal Resistance
T
= 25_C, unless otherwise specified
amb
Parameter T est Conditions Symbol Value Unit
Junction ambient on glass fibre printed board (25 x 20 x 1.5) mm
plated with 35mm Cu
Document Number 85001
Rev. 3, 20-Jan-99
3
R
thJA
www.vishay.de • FaxBack +1-408-970-5600
450 K/W
1 (5)
BF579/BF579R
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 = 20 V, VBE = 0 –I
Collector-base cut-off current –VCB = 15 V, IE = 0 –I
Emitter-base cut-off current –VEB = 3 V, IC = 0 –I
Collector-emitter breakdown voltage –IC = 1 mA, IB = 0 –V
DC forward current transfer ratio –VCE = 10 V, –IC = 10 mA h
Electrical AC Characteristics
T
= 25_C, unless otherwise specified
amb
CES
CBO
EBO
(BR)CEO
FE
100mA
100 nA
10
m
20 V
20 50 90
A
Parameter Test Conditions Sym-
Transition frequency –VCE = 10 V, –IC = 10 mA, f = 100 MHz f
Collector-base capacitance –VCB = 10 V, f = 1 MHz C
Noise figure –VCE = 10 V, –IC = 10 mA, ZS = 50 W,
f = 800 MHz
Power gain –VCE = 10 V, –IC = 10 mA, ZS = 50 W, Z
L
= 500 W, f = 800 MHz
Min Typ Max Unit
bol
T
cb
1750 MHz
0.55 pF
F 3.4 4.2 dB
G
pb
16 dB
www.vishay.de • FaxBack +1-408-970-5600
2 (5)
Document Number 85001
Rev. 3, 20-Jan-99
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