Datasheet

1999 Jul 23 2
Philips Semiconductors Product specification
UHF wideband transistor PRF947
FEATURES
• Small size
• Low noise
• Low distortion
• High gain
• Gold metallization ensures excellent reliability.
APPLICATIONS
• Communication and instrumentation systems.
DESCRIPTION
Silicon NPN transistor in a surface mount 3-pin SOT323
package. The transistor is primarily intended for wideband
applications in the GHz-range in the RF front end of analog
and digital cellular telephones, cordless phones, radar
detectors, pagers and satellite TV-tuners.
PINNING
PIN DESCRIPTION
1 base
2 emitter
3 collector
Fig.1 Simplified outline (SOT323) and symbol.
Marking code: V0.
handbook, halfpage
2
3
1
MAM062
3
2
1
Top view
QUICK REFERENCE DATA
Note
1. T
s
is the temperature at the soldering point of the collector pin.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
C
re
feedback capacitance I
C
= 0; V
CB
=6V; f=1MHz − 0.3 − pF
f
T
transition frequency I
C
= 15 mA; V
CE
=6V; f
m
= 1 GHz − 8.5 − GHz
G
UM
maximum unilateral power gain I
C
= 15 mA; V
CE
=6V;
T
amb
=25°C; f = 1 GHz
− 16 − dB
NF noise figure Γ
S
= Γ
opt
; I
C
= 5 mA; V
CE
=6V;
f = 1 GHz
− 1.5 − dB
P
tot
total power dissipation T
s
=60°C; note 1 −−250 mW
R
th j-s
thermal resistance from junction
to soldering point
P
tot
= 250 mW −−460 K/W