IPC CID+ Certification Exam Newest 2025 Complete Questions and Verified Answers
|Already Graded A+
Affects dimensional stability and changes the electrical characteristic in the material which can cause
potential difficulties in assembly - (answer)Moisture absorption
What are the 3 general methods of plating material on PCBs? - (answer)Immersion, electroless, and
electrolytic
What are the benefits of metallic coatings / final(surface) finish? - (answer)Corrosion prevention,
Improved long-term solderability
Simplest of the wet 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 -
(answer)Immersion Plating
Why would you use immersion plating? - (answer)The thickness is limited to a very thin coating as it is a
simple replacement reaction
Why is Immersion finishes more beneficial than HASL? - (answer)Immersion has a flatter base for
attachment
What are the assembly challenges/problems with HASL process? - (answer)Coplanarity / solder
thickness varies, solder crowning, less uniformity
Stencil fits flat on pad, opening is smaller than the land pattern in all dimensions - (answer)Gasketing
What is the problem with gasketing in HASL? - (answer)Uneven surfaces cause leakage of paste
underneath the stencil
,IPC CID+ Certification Exam Newest 2025 Complete Questions and Verified Answers
|Already Graded A+
What other surface finishes are better/flatter than HASL? - (answer)Gray tin, nickel/gold,
nickel/palladium gold, immersion "white" tin, immersion silver, ENIG
What surface finish is good for BGAs and surface mount? - (answer)ENIG
Why would you use a washable solder mask / what is the advantage? - (answer)Washable masks are
removable; they come off in a cleaning operation
What is plugging? - (answer)Process to ensure that plated through holes are prevent from being
contaminated by the assembly cleaning and plating process chemistries
For liquid photo imageable masks, what via process does IPC recommend? - (answer)Plugging
For dry film masks, what via process does IPC recommend? - (answer)Tenting
What will manufacturers do to get proper flow characteristics of the prepreg material and gain better
performance of the multilayer structure? - (answer)Manufacturers will mix and match the various
prepreg products
For surface mount and for the outer layers to be heat-resistant, what can the manufacturer do to help
this? - (answer)Polyimide material can be used for the outer layers of a multilayer while inner layers are
standard epoxy-grade product
In terms of material performance capability, how do you achieve homogenous construction? -
(answer)Same material is used/only slight variations occur between different material properties. Resin
flow of the prepreg must be consistent between the layers
, IPC CID+ Certification Exam Newest 2025 Complete Questions and Verified Answers
|Already Graded A+
What variation in construction change the physical and electrical performance of pcbs? -
(answer)Differences in overall resin content and the use of different styles of glass cloth; more
resin/glass content can produce the same external thickness
Integral part of the manufacturing and testing process; considered in all aspects during the
manufaturing process and NOT confined to an evaluation at the end of the line - (answer)SPC (Statistical
Process Control)
What is an example of an SPC? - (answer)In-process coupon evaluation may be cross-sectioned and
evaluated; first article inspection may be performed to ensure the remainder of the lot would be in
conformance
These specimens are representative of a the product produced and must represent the process -
(answer)Test coupons / specimens
What is the purpose of in-process test coupons? - (answer)Provides a systematic path for continuous
improvement, identifies root causes of problems, reduces the number of evaluations that need to be
made at the end of the production cycle
Hole solderability, thermal stress, plating thickness, layer registration, anything related to hole condition
within a 2-sided/multilayer board - (answer)Test coupon AB/R evaluation
Ability of a product to function under given conditions and for a specified period of time without
exceeding acceptable failure limits - (answer)Reliability
What is the importance of reliability? - (answer)Determine the functionality of equipment and the
environment in which it is to operate
Stress testing to failure, focuses on reliability - (answer)HAST
|Already Graded A+
Affects dimensional stability and changes the electrical characteristic in the material which can cause
potential difficulties in assembly - (answer)Moisture absorption
What are the 3 general methods of plating material on PCBs? - (answer)Immersion, electroless, and
electrolytic
What are the benefits of metallic coatings / final(surface) finish? - (answer)Corrosion prevention,
Improved long-term solderability
Simplest of the wet 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 -
(answer)Immersion Plating
Why would you use immersion plating? - (answer)The thickness is limited to a very thin coating as it is a
simple replacement reaction
Why is Immersion finishes more beneficial than HASL? - (answer)Immersion has a flatter base for
attachment
What are the assembly challenges/problems with HASL process? - (answer)Coplanarity / solder
thickness varies, solder crowning, less uniformity
Stencil fits flat on pad, opening is smaller than the land pattern in all dimensions - (answer)Gasketing
What is the problem with gasketing in HASL? - (answer)Uneven surfaces cause leakage of paste
underneath the stencil
,IPC CID+ Certification Exam Newest 2025 Complete Questions and Verified Answers
|Already Graded A+
What other surface finishes are better/flatter than HASL? - (answer)Gray tin, nickel/gold,
nickel/palladium gold, immersion "white" tin, immersion silver, ENIG
What surface finish is good for BGAs and surface mount? - (answer)ENIG
Why would you use a washable solder mask / what is the advantage? - (answer)Washable masks are
removable; they come off in a cleaning operation
What is plugging? - (answer)Process to ensure that plated through holes are prevent from being
contaminated by the assembly cleaning and plating process chemistries
For liquid photo imageable masks, what via process does IPC recommend? - (answer)Plugging
For dry film masks, what via process does IPC recommend? - (answer)Tenting
What will manufacturers do to get proper flow characteristics of the prepreg material and gain better
performance of the multilayer structure? - (answer)Manufacturers will mix and match the various
prepreg products
For surface mount and for the outer layers to be heat-resistant, what can the manufacturer do to help
this? - (answer)Polyimide material can be used for the outer layers of a multilayer while inner layers are
standard epoxy-grade product
In terms of material performance capability, how do you achieve homogenous construction? -
(answer)Same material is used/only slight variations occur between different material properties. Resin
flow of the prepreg must be consistent between the layers
, IPC CID+ Certification Exam Newest 2025 Complete Questions and Verified Answers
|Already Graded A+
What variation in construction change the physical and electrical performance of pcbs? -
(answer)Differences in overall resin content and the use of different styles of glass cloth; more
resin/glass content can produce the same external thickness
Integral part of the manufacturing and testing process; considered in all aspects during the
manufaturing process and NOT confined to an evaluation at the end of the line - (answer)SPC (Statistical
Process Control)
What is an example of an SPC? - (answer)In-process coupon evaluation may be cross-sectioned and
evaluated; first article inspection may be performed to ensure the remainder of the lot would be in
conformance
These specimens are representative of a the product produced and must represent the process -
(answer)Test coupons / specimens
What is the purpose of in-process test coupons? - (answer)Provides a systematic path for continuous
improvement, identifies root causes of problems, reduces the number of evaluations that need to be
made at the end of the production cycle
Hole solderability, thermal stress, plating thickness, layer registration, anything related to hole condition
within a 2-sided/multilayer board - (answer)Test coupon AB/R evaluation
Ability of a product to function under given conditions and for a specified period of time without
exceeding acceptable failure limits - (answer)Reliability
What is the importance of reliability? - (answer)Determine the functionality of equipment and the
environment in which it is to operate
Stress testing to failure, focuses on reliability - (answer)HAST
