IPC CID || Get it Correct.
What do performance classes reflect? correct answers Progressive increases in sophistication,
functional performance, and frequency/intensity of inspection or stress testing
What are the three performance classes? correct answers 1-General Electronics 2-Dedicated
Service 3-High reliability
Who is the end user? correct answers 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? correct answers The end user
What would be in class 3 performance? correct answers Military, medical, etc.
What is ambient temperature? correct answers The surrounding environment that comes into
contact with your product
What do producibility levels tell us? correct answers Increasing complexity of tooling, materials,
and processing. Yields increase as costs decrease, etc.
What increases with each producibility level? correct answers Sophisitication
What is the zaxis aspect ratio? correct answers 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? correct answers Special keep out or keep in areas of the board.
Where should high frequency circuits be placed? correct answers NEar the connector
, Where should filtering caps be placed? correct answers Near the source of power/gnd (at the
connector)
What is least important to route in analog circuits? correct answers Power and ground
What is a major consideration for component placement? correct answers Will backwards
compatibility be necessary?
What is Ohm's law? correct answers V=IR
What is an important basic rule for a designer of a board? correct answers Terminate unused
logic pins with a pull-down or pull-up resistor.
What product safety testing regards flame retardants? correct answers UL 94
How thick is half ounce copper? correct answers 0.7 mils (17 um thick)
What is the subtractive process? correct answers Unwanted copper is etched away
What is the additive process? correct answers Only wanted copper is added to the board
What must happen immediately after drilling the holes in the boards? correct answers Hole
deburring
What is an unsupported hole? correct answers A hole in the printed board that does not contain
plating or other conductive reinforcement
What do performance classes reflect? correct answers Progressive increases in sophistication,
functional performance, and frequency/intensity of inspection or stress testing
What are the three performance classes? correct answers 1-General Electronics 2-Dedicated
Service 3-High reliability
Who is the end user? correct answers 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? correct answers The end user
What would be in class 3 performance? correct answers Military, medical, etc.
What is ambient temperature? correct answers The surrounding environment that comes into
contact with your product
What do producibility levels tell us? correct answers Increasing complexity of tooling, materials,
and processing. Yields increase as costs decrease, etc.
What increases with each producibility level? correct answers Sophisitication
What is the zaxis aspect ratio? correct answers 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? correct answers Special keep out or keep in areas of the board.
Where should high frequency circuits be placed? correct answers NEar the connector
, Where should filtering caps be placed? correct answers Near the source of power/gnd (at the
connector)
What is least important to route in analog circuits? correct answers Power and ground
What is a major consideration for component placement? correct answers Will backwards
compatibility be necessary?
What is Ohm's law? correct answers V=IR
What is an important basic rule for a designer of a board? correct answers Terminate unused
logic pins with a pull-down or pull-up resistor.
What product safety testing regards flame retardants? correct answers UL 94
How thick is half ounce copper? correct answers 0.7 mils (17 um thick)
What is the subtractive process? correct answers Unwanted copper is etched away
What is the additive process? correct answers Only wanted copper is added to the board
What must happen immediately after drilling the holes in the boards? correct answers Hole
deburring
What is an unsupported hole? correct answers A hole in the printed board that does not contain
plating or other conductive reinforcement
