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PDF SMA540B Data sheet ( Hoja de datos )
| Número de pieza | SMA540B | |
| Descripción | Active Biased RF Transistor | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SMA540B (archivo pdf) en la parte inferior de esta página. Total 4 Páginas | ||
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SMA540B
• HIGH GAIN LOW NOISE AMPLIFIERS
Gms = 19 dB at 1.8 GHz
• CURRENT EASY ADJUSTABLE BY AN
EXTERNAL RESISTOR
• OPEN COLLECTOR OUTPUT
• TYPICAL SUPPLY VOLTAGE: 1.4-3.3 V
• TRANSITION FREQUENCY 42 GHz
• ULTRA MINIATURE SOT323-4L PACKAGE
(LEAD FREE)
APPLICATIONS
• WIDEBAND APPLICATIONS
• CELLULAR AND CORDLESS TELEPHONES
• HIGH FREQUENCY OSCILLATORS
DESCRIPTION
The SMA540B is a NPN Transistor integrating a cur-
rent mirror as biasing. In this way the IC (collector
current) can be controlled setting the current at Bias
pin according to IC = 10 * IBIAS. The IBIAS current
is easy adjustable using an external resistor.
SMA540B is housed in ultra miniature SOT323-4L
package(LEAD FREE), the relative dimensions are
1.15mmx1.8mm with 0.8mm thickness.
Active Biased RF Transistor
PRELIMINARY DATA
SOT323-4L (SC70)
ORDER CODE
SMA540BTR
BRANDING
TBD
Bias, 4
Bias
C, 3
B, 1 E, 2
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Vceo
Vebo
Ic
Ib
IBIAS
Ptot
Collector emitter voltage
Emitter base voltage
Collector current
Base current
BIAS Current
Total dissipation, Ts = 107 oC
Top Operating temperature
Tstg Storage temperature
Tj Max. operating junction temperature
THERMAL RESISTANCE
Rthjs
Thermal Resistance Junction soldering point
Value
4.5
1.5
40
4
4
120
-40 to +85
-65 to +150
150
< 270
Unit
V
V
mA
mA
mA
mW
oC
oC
oC
oC/W
January, 15 2003
1/4
1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet SMA540B.PDF ] | |
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