參數(shù)資料
型號: 934031470115
廠商: NXP SEMICONDUCTORS
元件分類: 小信號晶體管
英文描述: UHF BAND, Si, N-CHANNEL, RF SMALL SIGNAL, MOSFET
封裝: MICRO MINIATURE, PLASTIC, SMD, CMPAK-4
文件頁數(shù): 4/7頁
文件大?。?/td> 103K
代理商: 934031470115
1995 Apr 25
4
Philips Semiconductors
Preliminary specication
N-channel dual-gate MOS-FET
BF908WR
THERMAL CHARACTERISTICS
Notes
1. Device mounted on a printed-circuit board.
2. Ts is the temperature at the soldering point of the source lead.
STATIC CHARACTERISTICS
Tj =25 °C; unless otherwise specied.
DYNAMIC CHARACTERISTICS
Common source; Tamb =25 °C; VDS =8V; VG2-S = 4 V; ID = 15 mA; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
VALUE
UNIT
Rth j-a
thermal resistance from junction to ambient
note 1
350
K/W
Rth j-s
thermal resistance from junction to soldering point
Ts =87 °C; note 2
210
K/W
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V(BR)G1-SS
gate 1-source breakdown voltage
VG2-S =VDS = 0; IG1-S =10mA
8
20
V
V(BR)G2-SS
gate 2-source breakdown voltage
VG1-S =VDS = 0; IG2-S =10mA
8
20
V
V(P)G1-S
gate 1-source cut-off voltage
VG2-S =4V; VDS =8V; ID =20 A
2V
V(P)G2-S
gate 2-source cut-off voltage
VG1-S =4V; VDS =8V; ID =20 A
1.5
V
IDSS
drain-source current
VG2-S =4V; VDS =8V; VG1-S =0
3
15
27
mA
IG1-SS
gate 1 cut-off current
VG2-S =VDS = 0; VG1-S =5V
50
nA
IG2-SS
gate 2 cut-off current
VG1-S =VDS = 0; VG2-S =5V
50
nA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
y
fs
forward transfer admittance
pulsed; Tj =25 °C
364350mS
Cig1-s
input capacitance at gate 1
f = 1 MHz
2.4
3.1
4
pF
Cig2-s
input capacitance at gate 2
f = 1 MHz
1.2
1.8
2.5
pF
Cos
drain-source capacitance
f = 1 MHz
1.2
1.7
2.2
pF
Crs
reverse transfer capacitance
f = 1 MHz
20
30
45
fF
F
noise gure
f = 200 MHz; GS = 2 mS; BS =BSopt
0.6
1.2
dB
f = 800 MHz; GS =GSopt; BS =BSopt
1.5
2.5
dB
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