4-109
Surface Mount Low Noise
Silicon␣ Bipolar Transistor Chip
Technical Data
Features
• Low Noise Figure:
1.4 dB Typical at 1.0␣ GHz
1.8 dB Typical at 2.0␣ GHz
• High Associated Gain:
18.0 dB Typical at 1.0␣ GHz
13.0 dB Typical at 2.0␣ GHz
• High Gain-Bandwidth
Product: 7.0 GHz Typical f
T
• Low Cost Surface Mount
Plastic Package
• Tape-and-Reel Packaging
Option Available
[1]
AT-41411
SOT-143 Plastic
Note:
1. Refer to “Tape-and-Reel Packaging for
Semiconductor Devices”.
Description
Hewlett-Packard’s AT-41411 is a
general purpose NPN bipolar
transistor that offers excellent
high frequency performance. The
AT-41411 is housed in a low cost
low parasitic 4 lead SOT-143
surface mount package. The
SOT-143 is an industry standard
and is compatible with high
volume surface mount assembly
techniques. The 4 micron emitter-
to-emitter pitch enables this
transistor to be used in many
different functions. The 14 emitter
finger interdigitated geometry
yields an intermediate sized
transistor with impedances that
are easy to match for low noise
and moderate power applications.
This device is designed for use in
low noise, wideband amplifier,
mixer and oscillator applications
in the VHF, UHF, and microwave
frequencies. An optimum noise
match near 50 Ω in the 1 to 2 GHz
frequency range, makes this
device easy to use as a low noise
amplifier.
The AT-41411 bipolar transistor is
fabricated using Hewlett-Packard’s
10 GHz f
T
Self-Aligned-Transistor
(SAT) process. The die is 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 this device.
Pin Connections
GND
OUTPUT
INPUT
V
CC
414
5965-8924E