IPC CID Exam Questions and Correct
Answers
Question 1
What is extra clearance around components required for?
Correct Answer
The placement heads of the chip shooter
Question 2
How are datum features used?
Correct Answer
Position the printed board in relation to a set of three mutually perpendicular
planes
Question 3
What should reference designators match?
Correct Answer
The schematic or logic diagram
Question 4
What increases with each producibility level?
Correct Answer
Sophisitication
Question 5
What would be in class 3 performance?
Correct Answer
Military, medical, etc.
Page 1 of 20
,Question 6
What are tooling holes?
Correct Answer
Very tightly toleranced unsupported holes
Question 7
What are each of the following: a+2(b+c)+d
Correct Answer
Min land size=max drill hole+2(min annular ring+etchback)+manufacturing
Question 8
What kind of tolerance is given to a tooling hole and why?
Correct Answer
A -0" tolerance is specified so that the hole will never be too small to fit the pin
Question 9
What is the additive process?
Correct Answer
Only wanted copper is added to the board
Question 10
What is important to know about a capacitor?
Correct Answer
It can be polarized or unpolarized
Question 11
What side is exposed to wave solder with TH components?
Correct Answer
The side opposite the component body
Page 2 of 20
, Question 12
When can you swap gates?
Correct Answer
When your gates are all within the same logic family and IC
Question 13
What must you consider when using a socket?
Correct Answer
The pin numbers should be according to the device inserted into the socket
Question 14
What is the first consideration when deciding if a part can be transitioned from SMT
to TH?
Correct Answer
It must be determined if the leads can be bent or not
Question 15
How do you calculate thermal web size?
Correct Answer
0.6(1/number of webs)landsize
Question 16
Who is responsible for the size and location of the legend features as part of the
supplied artwork?
Correct Answer
The designer
Page 3 of 20
Answers
Question 1
What is extra clearance around components required for?
Correct Answer
The placement heads of the chip shooter
Question 2
How are datum features used?
Correct Answer
Position the printed board in relation to a set of three mutually perpendicular
planes
Question 3
What should reference designators match?
Correct Answer
The schematic or logic diagram
Question 4
What increases with each producibility level?
Correct Answer
Sophisitication
Question 5
What would be in class 3 performance?
Correct Answer
Military, medical, etc.
Page 1 of 20
,Question 6
What are tooling holes?
Correct Answer
Very tightly toleranced unsupported holes
Question 7
What are each of the following: a+2(b+c)+d
Correct Answer
Min land size=max drill hole+2(min annular ring+etchback)+manufacturing
Question 8
What kind of tolerance is given to a tooling hole and why?
Correct Answer
A -0" tolerance is specified so that the hole will never be too small to fit the pin
Question 9
What is the additive process?
Correct Answer
Only wanted copper is added to the board
Question 10
What is important to know about a capacitor?
Correct Answer
It can be polarized or unpolarized
Question 11
What side is exposed to wave solder with TH components?
Correct Answer
The side opposite the component body
Page 2 of 20
, Question 12
When can you swap gates?
Correct Answer
When your gates are all within the same logic family and IC
Question 13
What must you consider when using a socket?
Correct Answer
The pin numbers should be according to the device inserted into the socket
Question 14
What is the first consideration when deciding if a part can be transitioned from SMT
to TH?
Correct Answer
It must be determined if the leads can be bent or not
Question 15
How do you calculate thermal web size?
Correct Answer
0.6(1/number of webs)landsize
Question 16
Who is responsible for the size and location of the legend features as part of the
supplied artwork?
Correct Answer
The designer
Page 3 of 20
