Advanced Qualification · A-002 Advanced components and circuits · A-002-004-004
Why are special precautions necessary in handling FET and CMOS devices?
- A They have micro-welded semiconductor junctions that are susceptible to breakage
- B They have fragile leads that may break
- C They are susceptible to damage from static charges
- D They are light-sensitive
Correct answer: C — They are susceptible to damage from static charges. From the official ISED question bank, verified word for word.
Why
FET and CMOS devices contain extremely thin internal layers that act like tiny capacitors, which can be instantly destroyed by the small voltage spike from a static shock you might not even feel. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced components and circuits: semiconductors, amplifier classes, oscillators, mixers, filters and digital logic.