1 Exampromax - Stuvia US 2025/2026
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S
IPC CID+ Questions and Answers (100%
Correct Answers) Already Graded A+
Quiz: The board material has significant influence on the electrical perfo
rmance of the circuit from what two effects?⼀
Answer: dielectric constant and the loss tangent
Quiz: What are the 4 types of build-up multilayers?⼀
© 2025 Assignment Expert
Answer: Piercing post, Sequentially built-
up multilayer, Passive substrate, Filled via sequential co-
Exampromax - Stuvia US
laminated substrate
Quiz: The temperature at which anamorphous polymer changes fr
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om being a hard and relatively-
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brittle condition to be in a viscous or rubbery state
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Answer: Glass transition temperature (Tg)
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Quiz:
Affects dimensional stability and changes the electrical
characteristic in the material which can cause potential difficultie
s in assembly⼀Answer: Moisture absorption
Quiz: What are the 3 general methods of plating material on PCB
s?⼀ Answer: Immersion, electroless, and electrolytic
Quiz:
What are the benefits of metallic coatings / final(surface) finish
?⼀ Answer: Corrosion prevention, Improved long-term solderability
,2 Exampromax - Stuvia US 2025/2026
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Quiz:
Simplest of the wet processes; involves a simple galvan
ic replacement reaction; the more noble metal in the solution pi
cks up
, 3 Exampromax - Stuvia US 2025/2026
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S
electrons- from- the-less- noble- metal- immersed-in- the-solution- and- plates- o-ut
⼀Answer:- Immersion-Plating
Quiz: Why-would-you-use-immersion-plating?⼀
Answer: The- thickness- is-limited-to-a-very-thin-coating-as-it-is-a-simp-
le-replacement-reaction
Quiz: Why-is-Immersion-finishes-more-beneficial-than-HASL?⼀-
Answer:- Immersion-has-a-flatter-base-for-attachment
© 2025 Assignment Expert
Quiz: What-are-the-assembly-challenges/problems-with-HASL-process?
Exampromax - Stuvia US
—
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Answer: Coplanarity /-solder thickness varies, solder-crowning,-less unif-
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ormity
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Quiz:
Stencil- fits flat on pad, opening is smaller than- the- land- patte
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rn- in- all- dimensions⼀Answer: - - Gasketing W S
-
WS
Quiz: What-is- the- problem- with- gasketing- in- HASL?⼀
Answer:- Uneven- surfaces-cause-leakage-of-paste-underneath-the-stenc-
il
Quiz: What-other-surface-finishes-are-better/flatter-than-HASL?⼀-
Answer:- Gray-tin,-nickel/gold,-nickel/palladium-gold,-immersion-"w-
hite" - tin, - immersion- silver,- ENIG
Quiz:
What-surface-finish-is- good-for-BGAs-and-surface-mount-
?⼀ Answer: ENIG
, 4 Exampromax - Stuvia US 2025/2026
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S
Quiz:
Why- would- you- use- a- washable- solder- mask- /- what- is- the
advantage?⼀
Answer: Washable-masks-are-removable;-they-come-off-in-a- cleaning-
operation
WS WS WS W
S
IPC CID+ Questions and Answers (100%
Correct Answers) Already Graded A+
Quiz: The board material has significant influence on the electrical perfo
rmance of the circuit from what two effects?⼀
Answer: dielectric constant and the loss tangent
Quiz: What are the 4 types of build-up multilayers?⼀
© 2025 Assignment Expert
Answer: Piercing post, Sequentially built-
up multilayer, Passive substrate, Filled via sequential co-
Exampromax - Stuvia US
laminated substrate
Quiz: The temperature at which anamorphous polymer changes fr
WS WS WS WS
om being a hard and relatively-
WS
brittle condition to be in a viscous or rubbery state
WS WS WS WS WS WS ⼀
Answer: Glass transition temperature (Tg)
WS WS
Quiz:
Affects dimensional stability and changes the electrical
characteristic in the material which can cause potential difficultie
s in assembly⼀Answer: Moisture absorption
Quiz: What are the 3 general methods of plating material on PCB
s?⼀ Answer: Immersion, electroless, and electrolytic
Quiz:
What are the benefits of metallic coatings / final(surface) finish
?⼀ Answer: Corrosion prevention, Improved long-term solderability
,2 Exampromax - Stuvia US 2025/2026
WS WS WS W
S
Quiz:
Simplest of the wet processes; involves a simple galvan
ic replacement reaction; the more noble metal in the solution pi
cks up
, 3 Exampromax - Stuvia US 2025/2026
WS WS WS W
S
electrons- from- the-less- noble- metal- immersed-in- the-solution- and- plates- o-ut
⼀Answer:- Immersion-Plating
Quiz: Why-would-you-use-immersion-plating?⼀
Answer: The- thickness- is-limited-to-a-very-thin-coating-as-it-is-a-simp-
le-replacement-reaction
Quiz: Why-is-Immersion-finishes-more-beneficial-than-HASL?⼀-
Answer:- Immersion-has-a-flatter-base-for-attachment
© 2025 Assignment Expert
Quiz: What-are-the-assembly-challenges/problems-with-HASL-process?
Exampromax - Stuvia US
—
WS
WS
Answer: Coplanarity /-solder thickness varies, solder-crowning,-less unif-
WS WS WS WS WS
ormity
WS
WS
Quiz:
Stencil- fits flat on pad, opening is smaller than- the- land- patte
WS WS WS WS WS WS WS
WS
rn- in- all- dimensions⼀Answer: - - Gasketing W S
-
WS
Quiz: What-is- the- problem- with- gasketing- in- HASL?⼀
Answer:- Uneven- surfaces-cause-leakage-of-paste-underneath-the-stenc-
il
Quiz: What-other-surface-finishes-are-better/flatter-than-HASL?⼀-
Answer:- Gray-tin,-nickel/gold,-nickel/palladium-gold,-immersion-"w-
hite" - tin, - immersion- silver,- ENIG
Quiz:
What-surface-finish-is- good-for-BGAs-and-surface-mount-
?⼀ Answer: ENIG
, 4 Exampromax - Stuvia US 2025/2026
WS WS WS W
S
Quiz:
Why- would- you- use- a- washable- solder- mask- /- what- is- the
advantage?⼀
Answer: Washable-masks-are-removable;-they-come-off-in-a- cleaning-
operation
