Page 26 - CFCM May-June 2021_Neat

PLATING AND ANODIZING: PRECIOUS METALS PLATING

tion assisted immersion gold bath is higher gold thickness than standard described as an advanced immersion gold
reportedly suitable for ENIG, ENEPIG immersion gold, without increasing the bath that minimizes nickel corrosion,
and EPIG surface finish applications. The probability of nickel corrosion. optimizes gold distribution. A special addi-
bath, Uyemura explains, can deposit a A further process, Gobright TAM-55, is tive minimizes nickel dissolution, leaving a
robust nickel surface following the immer-
sion gold reaction.
AT solderability of the electroless nickel in an
TAM-55 protects and maintains the
ENIG deposit. It offers a solderable finish
for small SMT and BGA pads.
“For maximum compatibility, Nimuden
Pull-off Adhesion Testers NPR Series electroless nickel is the recom-
mended underlying deposit for PCB and IC
Measures adhesion of coatings to metal, packaging,” Uyemura says “TAM-55 may be
used for both ENIG and ENEPIG, allowing a
wood, concrete, and other rigid substrates single source immersion gold for plating
lines that apply both processes.”
DuPont is another company that, among
its broad portfolio of technologies, supplies
precious metals plating products. Its
Electronic solutions division has the
Ronovel LB-300 Gold-Cobalt system for
example, offering an electrolytic gold the
company describes as “a mildly acidic cobalt
alloyed gold product that can operate under
a wide current density range. Its exceptional
performance in reducing “bleed’ plating
AT-A Automatic Model can significantly reduce gold usage and
operation cost.”
Ronovel N Gold-Nickel Electrolytic Gold
Electronically controlled hydraulic pump automatically applies produces a nickel-alloyed gold deposit with
smooth and continuous pull-off pressure low porosity, reportedly improved wear
resistance, and good throwing power. It can
Impact and scratch resistant color Touch Screen display with keypad
be customized for barrel, rack, reel-to-reel
Wirelessly connect the PosiTest AT-A to your and high-speed applications.
smart device using the free PosiSoft App Auronal BGA Electrolytic Gold uses a
WiFi grain refinement system that DuPont says
Record the results as pass/fail and the nature of exhibits high resistance to metallic contam-
fracture—cohesive, adhesive, and glue failures ination. It can be customized for barrel, rack,
reel-to-reel and high-speed applications.
AT-M Manual Model New Features And Auronal BGA LF Electrolytic Gold
deposits pure gold from an arsenic- and
High-contrast, easy-to-read lead-free electrolyte. It is compatible with
rack, barrel or high speed reel to reel selec-
color display
tive plating equipment. This gold can be
Redesigned keypad applied over copper, copper alloy or nickel
and user interface substrates and where required for adhesion
promotion.
Field replaceable AAA alkaline Previous metals plating is a specialized
batteries provide up to 16 hours area, and because of the precision needed, it
of testing requires a higher level of in-plant expertise
than many coatings processes. However, for
the same reason, it can be an exceptionally
+1-315-393-4450 1-800-448-3835
techsale@defelsko.com www.defelsko.com profitable niche, top-quality work com-
manding good prices from customers. n
26 CANADIAN FINISHING & COATINGS MANUFACTURING MAY/JUNE 2021