Advanced Qualification · A-002 Advanced components and circuits · A-002-005-003
When a silicon controlled rectifier (SCR) is triggered, to what other semiconductor diode are its electrical characteristics similar (as measured between its cathode and anode)?
- A The varactor diode
- B The junction diode
- C The PIN diode
- D The hot-carrier (Schottky) diode
Correct answer: B — The junction diode. From the official ISED question bank, verified word for word.
Why
Once triggered, a silicon controlled rectifier acts like a standard junction diode, allowing current to flow freely from anode to cathode while blocking it in the reverse direction. 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.