820-0332
5-1
Ink
General Information
Semiconductor manufacturers use the vision system of automatic pick and place equipment
during the assembly process to detect damaged and/or rejected die. This is done by shining
a combination of different lights on the wafer surface to create a “white” background. Ink
dots and defects such as chipped corners are easily recognizable against this background.
DieMark 8103, 8104, 7824, 7824T and 6993 inks are opaque and easily recognizable under
all lighting conditions. Glycol Free 8103 ink is thick in viscosity and delivers opaque dots
ranging from 6 to 40 mils. 8104 is not as viscous as 8103 and provides thinner dots with
excellent geometry and adhesion in a larger dot range up to 86 mils. 6990 and 6997 are less
opaque and may not offer sufficient contrast under all lighting conditions.
8103 ink is certified to contain less than 10 ppm of Sodium (Na) and Chloride (Cl). 8104
ink is certified to contain less than 20 ppm of Sodium (Na) and Chloride (Cl). Both 8103
and 8104 premium inks are free of glycol ethers, which are identified reproductive hazards
and carcinogens. 7824 and 7824T inks are certified to contain less than 10 ppm of Na and
Cl. 6990 is certified to contain less than 25 ppm of Na and Cl. Analysis reports are
available upon request from Xandex Customer Service.
Although 6993 and 6997 are not contaminant controlled, periodic test data indicates that
these inks typically contain less than 100 ppm of Sodium (Na) and 400 ppm of Chloride
(Cl). These levels are not certified or guaranteed.
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Glycol Free 8103 and 8104 inks have a 4 month shelf life, rapidly air dry at ambient
conditions and will give consistent flow for 3 days after cartridge opening. 6990, 6993 and
6997 inks have a 4 month shelf life, require heat curing to be permanent, and will give
consistent flow for 5 days after cartridge opening. 7824 and 7824T inks have a 4 month
shelf life and will give consistent flow for 3 days after cartridge opening. 7824 and 7824T
can be air or “heat set” cured.
Glycol Free 8103 and 8104 inks are thermally stable at temperatures up to 150
°
C and can
be used in hot chuck or oven drying applications without cracking or loss of adhesion. Use
of either 6990, 6993 and 6997 or 7824 and 7824T inks in hot chuck applications is not
recommended as the elevated ambient temperature in the probing area can reduce cartridge
life and cause inconsistent ink flow. However, use of a hot chuck to heat set dots during
offline inking has reportedly been successful when employed by some customers. All the
inks offered by Xandex are non-magnetic.
Safety Data Sheets (SDS) are available for all inks offered by Xandex. To obtain SDS or
information about choosing the appropriate ink for your application please contact your
local distributor or Xandex Customer Service.
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Test results are dependent on test method
Summary of Contents for 340-7110
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