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Video #
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Subject
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Production Date
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Description
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16
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The
Death of a Tin Whisker: Sputtered Tin on Silver
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2012
Center for Advanced Vehicle and
Extreme Environment Electronics (CAVE3) Auburn University
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Video shows a tin whisker laden surface (~0.2 micron
thick Sn on Ag system) that is heated linearly (~1°C/s) from room
temperature to above the melting point of tin, recorded in real-time with a
scanning electron microscope.
The tin whisker had previously drained its liquid metal
tin and what is left is the empty tin oxide (SnOx) exoskeleton. The movement observed is due to the
interaction of the electron beam with the exoskeleton.
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15
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Draining
Tin Whiskers: Sputtered Tin on Silver
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2012
Center for Advanced Vehicle and
Extreme Environment Electronics (CAVE3) Auburn University
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Video shows a tin whisker laden surface (~0.2 micron
thick Sn on Ag system) that is heated linearly (~1°C/s) from room
temperature to above the melting point of tin, recorded in real-time with a
scanning electron microscope.
For many whiskers, the whisker shaft moves and buckles
as the now liquid Sn metal drains.
The remaining Sn oxide exoskeleton (whose melting temperature is
>1000°C) flattens and frequently forms a spherical mass with electron
beam heating.
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14
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Troubleshooting
Tips:
Comparison of Methods to Measure Resistance of Metal Whiskers
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September 2011
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Video shows how oxide films that form on
metal whiskers can make measuring whisker resistance difficult due to the
elevated voltage needed to first breakdown the electrically insulating
oxide film before current will flow through the whisker to enable measuring
resistance. A "series resistor" is used in the measurement
circuit to limit the current flow through the whisker once the oxide film
is broken down otherwise the whisker might melt. Video compares
a common multimeter in
resistance measure mode vs. a variable power supply for measuring whisker resistance.
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13
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Melting
a Tin Whisker Using a Volt/Ohm Meter to Measure Resistance
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April 2012
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Video demonstrates that a multimeter (volt/ohm meter)
set in RESISTANCE MEASURING MODE may supply a voltage that is sufficient to
melt a tin whisker thus removing evidence of the whisker as a possible root
cause of electrical faults
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12
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Optical
Microscopy of a D-Sub Connector with Tin Whiskers:
Extended version of Video from July 2006
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April 2012
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Video
demonstrating impact of lighting and inspection angle while using optical
microscopy to detect tin whiskers on a Dsub connector shell.
As
presented by L. Panashchenko at the IPC Tin Whisker Symposium 2012 (Dallas,
TX)
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11
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Zinc
Whiskers on Hot Dip Galvanized (HDG) Steel and Whisker Bending Due to
Electrostatic Attraction
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September 2007
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Video illustrates
HDG coatings are not immune to whisker formation. Also illustrates
bending/flexing of whiskers in presence of electric fields
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10
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NASA Shuttle Logistics Depot-Tin Whisker
Video
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April 2007
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Video detailing
the efforts of the the
NSLD in addressing a massive tin whisker infestation in NASA Space Shuttle
avionics boxes
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9
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Tin Whisker
Infestation on Tin-Plated Card Rails
(~5Mbytes)
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November 2006
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Video showing
extreme tin whisker infestation on tin-plated card rails
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8
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D-Sub
Connectors with Tin Whiskers (~5Mbytes)
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July 2006
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Video showing tin
whisker growing on D-Sub Connector Shell
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7
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Transformer
Cans with Tin Whiskers (~5Mbytes)
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July 2006
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Video showing tin
whiskers growing from tin-plated transformer cans
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6
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RF
Enclosures with Tin Whiskers and Loose Whisker Debris (~5 Mbytes)
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January 2007
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Video showing tin
whiskers on RF enclosure that produced field problems for an anonymous
source.
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5
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Electromagnetic
Relay with Tin Whiskers (~11
Mbytes)
(Mfr date 1993.
Inspection date 2006)
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June 15, 2006
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Video showing long
tin whiskers on an electromagnetic relay made in 1993 and inspected in 2006.
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4
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Terminal
Lugs with Metal Whiskers (~5 Mbytes)
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May 26, 2006
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Video shows metal
whiskers on terminal lugs
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3
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Tin
Whiskers on Variable Capacitor - 1960 Grundig Radio
(~5 Mbytes)
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April 2006
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Video shows
extremely dense growth of tin whiskers on a variable air capacitor inside
of a 1960 vintage radio tuner. Longest whisker in video ~8-mm. Video
highlights extreme flexibility of long, slender whiskers.
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2
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Tin Whisker Growth Kinetics
MPG Format (11 MBytes)
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Nov. 5, 2002
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Demonstrates the
growth process of a tin whisker over a period of ~1.5 months
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1
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Tin Whisker
Motion Due to Gentle Air Currents
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Nov. 5, 2002
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Demonstrates how
some tin whiskers behave under influence of minor air currents. These
whiskers were found growing inside of electromagnetic relays whose
procurement specs prohibited the use of pure tin-plating, but the finish
WAS PURE TIN nevertheless.
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