1/7July, 3 2002
START420
NPN Silicon RF Transistor
SOT343 (SC70)
ORDER CODE
START420TR
BRANDING
420
APPLICATIONS
• LNA FOR GSM/DCS, DECT, PDC, PCS,
PCN
• PREDRIVER FOR DECT
• GENERAL PURPOSE 500MHz-5GHz
• LOW NOISE FIGURE: NFmin = 1.05dB
@ 1.8GHz, 5mA, 2V
• COMPRESSION P1dB = 12.5dBm
@ 1.8GHz, 20mA, 2V
• ULTRA MINIATURE SOT343 PACKAGE
DESCRIPTION
The START420 is a member of the START family
that provide market with the state of the art of RF
silicon process. Manufacturated in the third
generation of ST proprietary bipolar process, it
offers the best mix of gain and NF for given
breakdown voltage(BVceo).
It reaches performance level only achieved with
GaAs products before.
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
ceo
Collector emitter voltage 4.5 V
V
cbo
Collector base voltage 15 V
V
ebo
Emitter base voltage 1.5 V
I
c Collector current 40 mA
I
b
Base current 4 mA
P
tot
Total dissipation, T
s
= 101 180 mW
T
stg
Storage temperature -65 to 150
o
C
T
j Max. operating junction temperature 150
o
C
R
thjs
Thermal Resistance Junction soldering point 270
o
C/W
ABSOLUTE MAXIMUM RATINGS