Agilent AT-31011, AT-31033
Low Current, High Performance
NPN Silicon Bipolar Transistor
Data Sheet
Features
Description
Agilent’s AT-31011 and AT-31033
are high performance NPN bipolar
transistors that have been
optimized for operation at low
voltages, making them ideal for use
in battery powered applications in
wireless markets. The AT-31033
uses the 3 lead SOT-23, while the
AT-31011 places the same die in the
higher performance 4 lead
SOT-143. Both packages are
industry standards compatible with
high volume surface mount
assembly techniques.
Outline Drawing
EMITTER COLLECTOR
310
BASE
EMITTER
SOT-143 (AT-31011)
COLLECTOR
310
BASE
EMITTER
SOT-23 (AT-31033)
The 3.2 micron emitter-to-emitter
pitch and reduced parasitic design
of these transistors yields
extremely high performance
products that can perform a multiplicity of tasks. The 10 emitter
finger interdigitated geometry
yields an extremely fast transistor
with low operating currents and
reasonable impedances.
Optimized performance at 2.7 V
makes these devices ideal for use
in 900 MHz, 1.9 GHz, and 2.4 GHz
battery operated systems as an
LNA, gain stage, buffer, oscillator,
or active mixer. Applications
include cellular and PCS handsets
as well as Industrial-ScientificMedical systems. Typical
amplifier designs at 900 MHz yield
1.3 dB noise figures with 11 dB or
more associated gain at a 2.7 V, 1
mA bias. Moderate output power
capability (+9 dBm P1dB) coupled
with an excellent noise figure
yields high dynamic range for a
microcurrent device. High gain
capability at 1 V, 1 mA makes these
devices a good fit for 900 MHz
pager applications.
The AT-3 series bipolar transistors
are fabricated using an optimized
version of Agilent’s 10 GHz fT, 30
GHz fmax Self-Aligned-Transistor
(SAT) process. The die are nitride
passivated for surface protection.
Excellent device uniformity,
performance and reliability are
produced by the use of ionimplantation, self-alignment
techniques, and gold metalization
in the fabrication of these devices.
• High Performance Bipolar
Transistor Optimized for
Low Current, Low Voltage
Operation
• 900 MHz Performance:
AT-31011: 0.9 dB NF, 13 dB GA
AT-31033: 0.9 dB NF, 11 dB GA
• Characterized for End-OfLife Battery Use (2.7 V)
• SOT-143 SMT Plastic
Package
• Tape-And-Reel Packaging
Option Available
• Lead-free Option Available
