PCB Regulatory Frameworks & Compliance 4

Question 1

Which IPC document defines the land pattern (footprint) geometry recommendations for SMT component packages?

Accepted Answer

IPC-7351

Answer

IPC-7351 (Generic Requirements for Surface Mount Design and Land Pattern Standard) provides land pattern geometries for SMT component packages.

Question 2

A board must operate in a marine environment. Which standard's salt spray (fog) testing requirements would be most relevant for conformal coating validation?

Accepted Answer

ASTM B117

Answer

ASTM B117 is the standard practice for operating salt spray (fog) testing apparatus, commonly referenced for corrosion resistance validation of coatings.

Question 3

Under RoHS 3 (EU 2015/863), what are the maximum allowable concentration limits for restricted substances in homogeneous materials?

Accepted Answer

1000 ppm for lead, 100 ppm for cadmium

Answer

RoHS specifies a maximum of 1000 ppm (0.1%) for lead, mercury, hexavalent chromium, PBB, and PBDE, and 100 ppm (0.01%) for cadmium.

Question 4

For a PCB used in automotive electronics, which standard defines quality management and reliability requirements specific to the automotive supply chain?

Accepted Answer

IATF 16949

Answer

IATF 16949 is the automotive-sector-specific quality management standard that extends ISO 9001 requirements for the automotive supply chain.

Question 5

Which IPC standard specifically covers the qualification and performance requirements for high-density interconnect (HDI) PCBs?

Accepted Answer

IPC-6016

Answer

IPC-6016 provides qualification and performance specifications for high-density interconnect (HDI) layers or boards.

PCB - Design Practice Test

PCB - Design Practice Test

PCB Regulatory Frameworks & Compliance 4