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BF1212 Datasheet(PDF) 2 Page - NXP Semiconductors

No. de pieza BF1212
Descripción Electrónicos  N-channel dual-gate MOS-FETs
Download  15 Pages
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Fabricante Electrónico  PHILIPS [NXP Semiconductors]
Página de inicio  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

BF1212 Datasheet(HTML) 2 Page - NXP Semiconductors

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2003 Nov 14
2
Philips Semiconductors
Product specification
N-channel dual-gate MOS-FETs
BF1212; BF1212R; BF1212WR
FEATURES
• Short channel transistor with high forward transfer
admittance to input capacitance ratio
• Low noise gain controlled amplifier
• Excellent low frequency noise performance
• Partly internal self-biasing circuit to ensure good
cross-modulation performance during AGC and good
DC stabilization.
APPLICATIONS
• Gain controlled low noise VHF and UHF amplifiers for
5 V digital and analog television tuner applications.
DESCRIPTION
Enhancement type N-channel field-effect transistor with
source and substrate interconnected. Integrated diodes
between gates and source protect against excessive input
voltage surges. The BF1212, BF1212R and BF1212WR
are encapsulated in the SOT143B, SOT143R and
SOT343R plastic packages respectively.
PINNING
PIN
DESCRIPTION
1
source
2
drain
3
gate 2
4
gate 1
handbook, 2 columns
Top view
MSB014
12
3
4
Fig.1 Simplified outline (SOT143B).
BF1212; marking code: LGp
handbook, 2 columns
Top view
MSB035
1
2
4
3
Fig.2 Simplified outline (SOT143R).
BF1212R; marking code: LKp
handbook, halfpage
Top view
MSB842
21
4
3
Fig.3 Simplified outline (SOT343R).
BF1212WR; marking code: ML
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VDS
drain-source voltage
−−
6V
ID
drain current
−−
30
mA
Ptot
total power dissipation
−−
180
mW
y
fs
forward transfer admittance
28
33
43
mS
Cig1-ss
input capacitance at gate 1
1.7
2.2
pF
Crss
reverse transfer capacitance
f = 1 MHz
15
30
fF
F
noise figure
f = 800 MHz
1.1
1.8
dB
Xmod
cross-modulation
input level for k = 1 % at
40 dB AGC
100
104
dB
µV
Tj
junction temperature
−−
150
°C


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