Regulatory Frameworks & Compliance Flashcards

Under IPC-2221, what is the minimum electrical clearance required between uncoated conductors at 101–300V DC on the external layer of a Class 3 board?

Answer: 1.25 mm

IPC-2221 Table 6-1 specifies 1.25 mm minimum clearance for external conductors at 101–300V in non-coated Class 3 applications.

Which EU directive specifically governs the restriction of hazardous substances like lead and cadmium in electronic equipment?

Answer: RoHS

The RoHS Directive (2011/65/EU) restricts the use of lead, cadmium, mercury, and other hazardous substances in electrical and electronic equipment.

A PCB intended for aerospace avionics must comply with which IPC standard for high-reliability rigid boards?

Answer: IPC-6012

IPC-6012 is the qualification and performance specification for rigid printed boards, with Class 3A addendum covering aerospace/military requirements.

What does the FCC Part 15 regulation primarily address for PCB designers?

Answer: Unintentional electromagnetic emissions from digital devices

FCC Part 15 sets limits on unintentional radio frequency emissions from digital devices to prevent interference with licensed radio services.

Which IPC standard defines the acceptability criteria for solder joints on surface mount components?

Answer: IPC-A-610

IPC-A-610 (Acceptability of Electronic Assemblies) defines visual and workmanship criteria for solder joints including SMT components.

For UL 94 flammability ratings, which rating indicates the material self-extinguishes and does not drip flaming particles?

Answer: V-0

UL 94 V-0 is the most stringent vertical burn rating, requiring self-extinction within 10 seconds with no flaming drips.

Which standard governs the qualification of printed circuit board fabricators and sets requirements for their quality management processes?

Answer: AS9100

AS9100 is the aerospace quality management system standard that PCB fabricators serving aerospace customers must be certified to.