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HMC281 Datasheet(PDF) 6 Page - Hittite Microwave Corporation

Part No. HMC281
Description  GaAs MMIC LOW NOISE AMPLIFIER 18 - 32 GHz
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Maker  HITTITE [Hittite Microwave Corporation]
Homepage  http://www.hittite.com
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HMC281 Datasheet(HTML) 6 Page - Hittite Microwave Corporation

   
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1 - 59
12 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Web Site: www.hittite.com
MICROWAVE CORPORATION
FEBRUARY 2001
1
Ball or wedge bond with 0.025 mm (1 mil) diameter pure gold wire (DC bias) or ribbon bond (RF ports) with
0.076 mm x 0.013 mm (3 mil x 0.5 mil) size is recommended. Thermosonic wirebonding with a nominal
stage temperature of 150 deg. C and a ball bonding force of 40 to 50 grams or wedge bonding force of 18 to
22 grams is recommended. Use the minimum level of ultrasonic energy to achieve reliable wirebonds.
Wirebonds should be started on the chip and terminated on the package or substrate. All bonds should be
as short as possible <0.31 mm (12 mils).
Handling Precautions
Wire Bonding
The chip is back-metallized and can be die mounted with AuSn eutectic preforms or with electrically
conductive epoxy. The mounting surface should be clean and flat.
Eutectic Die Attach:
A 80/20 gold tin preform is recommended with a work surface temperature of 255 deg. C and a tool tem-
perature of 265 deg. C. When hot 90/10 nitrogen/hydrogen gas is applied, tool tip temperature should be
290 deg. C.
DO NOT expose the chip to a temperature greater than 320 deg. C for more than 20 seconds. No more
than 3 seconds of scrubbing should be required for attachment.
Epoxy Die Attach:
Apply a minimum amount of epoxy to the mounting surface so that a thin epoxy fillet is observed around
the perimeter of the chip once it is placed into position.
Cure epoxy per the manufacturer's schedule.
Mounting
Follow these precautions to avoid permanent damage.
Cleanliness: Handle the chips in a clean environment. DO NOT attempt to clean the chip using liquid
cleaning systems.
Static Sensitivity: Follow ESD precautions to protect against ESD strikes ( see page 8 - 2 ).
Transients: Suppress instrument and bias supply transients while bias is applied. Use shielded signal and
bias cables to minimize inductive pick-up.
General Handling: Handle the chip along the edges with a vacuum collet or with a sharp pair of bent twee-
zers. The surface of the chip has fragile air bridges and should not be touched with vacuum collet, twee-
zers, or fingers.
HMC281 LOW NOISE AMPLIFIER 18 - 32 GHz
HMC281
V
02.0500


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