IPC CID+ Actual Exam NEWEST VERSION 2025
Actual Exam with Verified Questions and Correct
Answers.
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Terms in this set (156)
Affects dimensional Moisture absorption
stability and changes the
electrical characteristic in
the material which can
cause potential difficulties
in assembly
What are the 3 general Immersion, electroless, and electrolytic
methods of plating
material on PCBs?
What are the benefits of Corrosion prevention, Improved long-term
metallic coatings / solderability
final(surface) finish?
Simplest of the wet Immersion Plating
processes; involves a
simple galvanic
replacement reaction; the
more noble metal in the
solution picks up
electrons from the less
noble metal immersed in
the solution and plates
out
,Why would you use The thickness is limited to a very thin coating as it is a
immersion plating? simple replacement reaction
Why is Immersion finishes Immersion has a flatter base for attachment
more beneficial than
HASL?
What are the assembly Coplanarity / solder thickness varies, solder crowning,
challenges/problems with less uniformity
HASL process?
Stencil fits flat on pad, Gasketing
opening is smaller than
the land pattern in all
dimensions
What is the problem with Uneven surfaces cause leakage of paste underneath
gasketing in HASL? the stencil
What other surface Gray tin, nickel/gold, nickel/palladium gold,
finishes are better/flatter immersion "white" tin, immersion silver, ENIG
than HASL?
What surface finish is ENIG
good for BGAs and
surface mount?
Why would you use a Washable masks are removable; they come off in a
washable solder mask / cleaning operation
what is the advantage?
Process to ensure that plated through holes are
What is plugging? prevent from being contaminated by the assembly
cleaning and plating process chemistries
For liquid photo Plugging
imageable masks, what via
process does IPC
recommend?
, For dry film masks, what Tenting
via process does IPC
recommend?
What will manufacturers Manufacturers will mix and match the various prepreg
do to get proper flow products
characteristics of the
prepreg material and gain
better performance of the
multilayer structure?
For surface mount and for Polyimide material can be used for the outer layers of
the outer layers to be a multilayer while inner layers are standard epoxy-
heat-resistant, what can grade product
the manufacturer do to
help this?
In terms of material Same material is used/only slight variations occur
performance capability, between different material properties. Resin flow of
how do you achieve the prepreg must be consistent between the layers
homogenous
construction?
What variation in Differences in overall resin content and the use of
construction change the different styles of glass cloth; more resin/glass
physical and electrical content can produce the same external thickness
performance of pcbs?
Integral part of the SPC (Statistical Process Control)
manufacturing and testing
process; considered in all
aspects during the
manufaturing process and
NOT confined to an
evaluation at the end of
the line
Actual Exam with Verified Questions and Correct
Answers.
Save
Terms in this set (156)
Affects dimensional Moisture absorption
stability and changes the
electrical characteristic in
the material which can
cause potential difficulties
in assembly
What are the 3 general Immersion, electroless, and electrolytic
methods of plating
material on PCBs?
What are the benefits of Corrosion prevention, Improved long-term
metallic coatings / solderability
final(surface) finish?
Simplest of the wet Immersion Plating
processes; involves a
simple galvanic
replacement reaction; the
more noble metal in the
solution picks up
electrons from the less
noble metal immersed in
the solution and plates
out
,Why would you use The thickness is limited to a very thin coating as it is a
immersion plating? simple replacement reaction
Why is Immersion finishes Immersion has a flatter base for attachment
more beneficial than
HASL?
What are the assembly Coplanarity / solder thickness varies, solder crowning,
challenges/problems with less uniformity
HASL process?
Stencil fits flat on pad, Gasketing
opening is smaller than
the land pattern in all
dimensions
What is the problem with Uneven surfaces cause leakage of paste underneath
gasketing in HASL? the stencil
What other surface Gray tin, nickel/gold, nickel/palladium gold,
finishes are better/flatter immersion "white" tin, immersion silver, ENIG
than HASL?
What surface finish is ENIG
good for BGAs and
surface mount?
Why would you use a Washable masks are removable; they come off in a
washable solder mask / cleaning operation
what is the advantage?
Process to ensure that plated through holes are
What is plugging? prevent from being contaminated by the assembly
cleaning and plating process chemistries
For liquid photo Plugging
imageable masks, what via
process does IPC
recommend?
, For dry film masks, what Tenting
via process does IPC
recommend?
What will manufacturers Manufacturers will mix and match the various prepreg
do to get proper flow products
characteristics of the
prepreg material and gain
better performance of the
multilayer structure?
For surface mount and for Polyimide material can be used for the outer layers of
the outer layers to be a multilayer while inner layers are standard epoxy-
heat-resistant, what can grade product
the manufacturer do to
help this?
In terms of material Same material is used/only slight variations occur
performance capability, between different material properties. Resin flow of
how do you achieve the prepreg must be consistent between the layers
homogenous
construction?
What variation in Differences in overall resin content and the use of
construction change the different styles of glass cloth; more resin/glass
physical and electrical content can produce the same external thickness
performance of pcbs?
Integral part of the SPC (Statistical Process Control)
manufacturing and testing
process; considered in all
aspects during the
manufaturing process and
NOT confined to an
evaluation at the end of
the line
