CIS CIS ESD Control & Protection 2

Question 1

What is the Human Body Model (HBM) used for in ESD testing?

Accepted Answer

Simulating ESD events from a charged person touching a component

Answer

Measuring the electrostatic voltage generated by an operator walking across a floor

Answer

Modeling the ESD sensitivity of a PCB assembly

Answer

Calculating safe handling voltages for production floor workers

Question 2

What color are most standard ESD protective bags and packaging materials?

Accepted Answer

Pink or metallic shielding (silver/gray)

Answer

Red

Answer

Yellow

Answer

Blue

Question 3

What is the maximum acceptable voltage threshold for an ESD wrist strap continuous monitor alarm (upper limit)?

Accepted Answer

250V

Answer

500V

Answer

1,000V

Answer

2,000V

Question 4

Which ESD model most closely simulates the discharge from a metal tool or conductive object touching a component pin?

Accepted Answer

Machine Model (MM)

Answer

Human Body Model (HBM)

Answer

Charged Device Model (CDM)

Answer

Transmission Line Pulse (TLP)

Question 5

What does an ionizer (air ionizer) do in an ESD control program?

Accepted Answer

Neutralizes static charges on insulative surfaces and isolated conductors that cannot be grounded

Answer

Removes humidity from the air to prevent condensation on components

Answer

Tests the ESD sensitivity of components before handling

Answer

Generates a clean static-free compressed air supply for cleaning

Question 6

According to ANSI/ESD S20.20, floor materials in an ESD Protected Area must have a resistance-to-ground of no more than:

Accepted Answer

1 × 10⁹ ohms

Answer

1 × 10⁷ ohms

Answer

1 × 10¹¹ ohms

Answer

1 × 10¹² ohms