Low Current, High Performance
NPN Silicon Bipolar Transistor
Technical Data
Description
Agilent’s AT-30511 and AT-30533
are high performance NPN bipolar
transistors that have been
optimized for maximum fT at low
voltage operation, making them
ideal for use in battery powered
applications in wireless markets.
The AT-30533 uses the 3 lead
SOT-23, while the AT-30511 places
the same die in the higher
performance 4 lead SOT-143. Both
packages are industry standard,
and compatible with high volume
surface mount assembly
techniques.
The 3.2 micron emitter-to-emitter
pitch and reduced parasitic design
of these transistors yields
extremely high performance
products that can perform a multi-
plicity of tasks. The 5 emitter
finger interdigitated geometry
yields an extremely fast transistor
with high gain and low operating
currents.
Features
• High Performance Bipolar
Transistor Optimized for
Low Current, Low Voltage
Operation
• 900 MHz Performance:
AT-30511: 1.1 dB NF, 16 dB GA
AT-30533: 1.1 dB NF, 13 dB GA
• Characterized for End-Of-
Life Battery Use (2.7 V)
• SOT-23 and SOT-143 SMT
Plastic Packages
• Tape-And-Reel Packaging
Option Available[1]
Optimized performance at 2.7 V
makes these devices ideal for use
in 900 MHz, 1.8 GHz, and 2.4 GHz
battery operated systems as an
LNA, gain stage, buffer, oscillator,
or active mixer. Typical amplifier
designs at 900 MHz yield 1.3 dB
noise figures with 13 dB or more
associated gain at a 2.7 V, 1 mA
bias. Voltage breakdowns are high
enough for use at 5 volts. 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 ion-implantation, self-alignment
techniques, and gold metalization
in the fabrication of these devices.
AT-30511
AT-30533
Outline Drawing
Note:
1. Refer to “Tape-and-Reel Packaging for
Semiconductor Devices”.
BASE EMITTER
EMITTER COLLECTO
BASE EMITTER
COLLECTOR
305
305
SOT-23 (AT-30533)
SOT-143 (AT-30511)