English
Language : 

BF543 Datasheet, PDF (2/3 Pages) Siemens Semiconductor Group – Silicon N Channel MOS FET Triode (For RF stages up to 300 MHz preferably in FM applications)
BF543
Vishay Semiconductors
Electrical DC Characteristics
Tamb = 25 °C, unless otherwise specified
Parameter
Test condition
Drain - source breakdown
voltage
ID = 10 µA, -VGS = 4 V
Gate - source breakdown
voltage
±IGS = 10 mA, VDS = 0
Gate - source leakage current ±VGS = 6 V, VDS = 0
Drain current
VDS = 10 V, VGS = 0
Gate - source cut-off voltage
VDS = 10 V, ID = 20 µA
Part
Symbol
Min
Typ.
Max
Unit
V(BR)DS
20
V
±V(BR)GSS
7.5
12
V
±IGSS
IDSS
1.5
BF543A
IDSS
1.5
BF543B
IDSS
4.0
-VGS(OFF)
50
nA
8.0
mA
6.5
mA
8.0
mA
2.5
V
Electrical AC Characteristics
Tamb = 25 °C, unless otherwise specified
VDS = 10 V, ID = 4 mA, f = 1 MHz
Parameter
Test condition
Forward transadmittance
Gate 1 input capacitance
Feedback capacitance
Output capacitance
Noise figure
GS = 2 mS, GL = 0.5 mS,
f = 200 MHz
Power gain
GS = 2 mS, GL = 0.5 mS,
f = 200 MHz
Package Dimensions in mm (Inches)
Symbol
Min
Typ.
Max
Unit
|y21s|
9.5
12
mS
Cissg1
2.7
pF
Crss
25
fF
Coss
0.9
pF
F
1.0
dB
Gps
22
dB
0.4 (.016) 0.4 (.016)
3.1 (.122)
2.8 (.110)
0.4 (.016)
0.175 (.007)
0.098 (.005)
0.1 (.004) max.
2.6 (.102)
2.35 (.092)
Mounting Pad Layout
0.52 (0.020)
ISO Method E
0.9 (0.035)
2.0 (0.079)
0.95 (.037)
0.95 (.037)
0.95 (0.037)
0.95 (0.037)
17418
www.vishay.com
2
Document Number 85072
Rev. 1.5, 05-Jul-05