Low Current, High Performance
NPN Silicon Bipolar Transistor
Technical Data
AT-30511
AT-30533
Features
Description
Optimized performance at 2.7 V
makes these devices ideal for use
in900MHz, 1.8GHz, and2.4GHz
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
• High Performance Bipolar
Transistor Optimized for
Low Current, Low Voltage
Operation
• 900 MHz Performance:
AT-30511:1.1dBNF,16 dB GA
AT-30533:1.1dBNF,13 dB GA
• Characterized for End-Of-
Life Battery Use (2.7 V)
• SOT-23 and SOT-143 SMT
Plastic Packages
Hewlett-Packard’sAT-30511and
AT-30533arehighperformance
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
leadSOT-23, whiletheAT-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
• Tape-And-Reel Packaging
Option Available[1]
900 MHzpagerapplications.
The AT-3 series bipolar transistors
are fabricated using an optimized
version of Hewlett- Packard’s
10 GHzf T,30GHzfMAX 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.
techniques.
Outline Drawing
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.
EMITTER COLLECTOR
305
BASE
EMITTER
SOT-143 (AT-30511)
COLLECTOR
305
BASE
EMITTER
SOT-23 (AT-30533)
Note:
1. Refer to “Tape-and-Reel Packaging for
Semiconductor Devices”.
4-23
5965-8918E