IPC CID EXAM SCRIPT TESTED QUESTIONS
FULL SOLUTION PREMIUM STUDY
MATERIAL
●● What are the three performance classes?
Answer: 1-General Electronics 2-Dedicated Service 3-High reliability
●● Who is the end user?
Answer: The end user is the individual or agency that contracts the
printed board or assembly to be designed and manufactured
●● Who determines the class of a product?
Answer: The end user
●● What would be in class 3 performance?
Answer: Military, medical, etc.
●● What is ambient temperature?
Answer: The surrounding environment that comes into contact with your
product
●● What do producibility levels tell us?
,Answer: Increasing complexity of tooling, materials, and processing.
Yields increase as costs decrease, etc.
●● What increases with each producibility level?
Answer: Sophisitication
●● What is the zaxis aspect ratio?
Answer: Ratio between the nominal thickness of the board and the
smallest drill size.
●● What is the most important special consideration in terms of
electrical functionality that a designer must consult the EE?
Answer: Special keep out or keep in areas of the board.
●● Where should high frequency circuits be placed?
Answer: Near the connector
●● Where should filtering caps be placed?
Answer: Near the source of power/gnd (at the connector)
●● What is least important to route in analog circuits?
Answer: Power and ground
, ●● What is a major consideration for component placement?
Answer: Will backwards compatibility be necessary?
●● What is Ohm's law?
Answer: V=IR
●● What is an important basic rule for a designer of a board?
Answer: Terminate unused logic pins with a pull-down or pull-up
resistor.
●● What product safety testing regards flame retardants?
Answer: UL 94
●● How thick is half ounce copper?
Answer: 0.7 mils (17 um thick)
●● What is the subtractive process?
Answer: Unwanted copper is etched away
●● What is the additive process?
Answer: Only wanted copper is added to the board
FULL SOLUTION PREMIUM STUDY
MATERIAL
●● What are the three performance classes?
Answer: 1-General Electronics 2-Dedicated Service 3-High reliability
●● Who is the end user?
Answer: The end user is the individual or agency that contracts the
printed board or assembly to be designed and manufactured
●● Who determines the class of a product?
Answer: The end user
●● What would be in class 3 performance?
Answer: Military, medical, etc.
●● What is ambient temperature?
Answer: The surrounding environment that comes into contact with your
product
●● What do producibility levels tell us?
,Answer: Increasing complexity of tooling, materials, and processing.
Yields increase as costs decrease, etc.
●● What increases with each producibility level?
Answer: Sophisitication
●● What is the zaxis aspect ratio?
Answer: Ratio between the nominal thickness of the board and the
smallest drill size.
●● What is the most important special consideration in terms of
electrical functionality that a designer must consult the EE?
Answer: Special keep out or keep in areas of the board.
●● Where should high frequency circuits be placed?
Answer: Near the connector
●● Where should filtering caps be placed?
Answer: Near the source of power/gnd (at the connector)
●● What is least important to route in analog circuits?
Answer: Power and ground
, ●● What is a major consideration for component placement?
Answer: Will backwards compatibility be necessary?
●● What is Ohm's law?
Answer: V=IR
●● What is an important basic rule for a designer of a board?
Answer: Terminate unused logic pins with a pull-down or pull-up
resistor.
●● What product safety testing regards flame retardants?
Answer: UL 94
●● How thick is half ounce copper?
Answer: 0.7 mils (17 um thick)
●● What is the subtractive process?
Answer: Unwanted copper is etched away
●● What is the additive process?
Answer: Only wanted copper is added to the board
