Reliability

Among ESD (electrostatic discharge) test models, which pair correctly names "discharge when a charged person touches an IC pin" and "discharge when the IC itself is charged and a pin touches metal"?

  1. AHuman body model (HBM) and charged device model (CDM)
  2. BTDDB and NBTI
  3. CHTOL and HAST
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Answer: A. Human body model (HBM) and charged device model (CDM)

The human body model simulates discharge from a charged human body, and the charged device model simulates discharge from an IC that became charged during manufacturing or handling. CDM involves very fast discharge and is emphasized because it is a main cause of damage in automated manufacturing.

  • A. Correct. Discharge from a person and from a charged IC itself.
  • B. TDDB and NBTI are time-dependent degradation of insulators and transistors.
  • C. HTOL and HAST are high-temperature operating and humidity acceleration tests.
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