5.12 Flashcards
What is an LRU?
Line replaceable unit
What is an ESD?
Electrostatic sensitive device
What percentage of ESD problems cause only partial failure?
80-90%
What are the common factors that contribute to static electricity?
- Humidity
- temperature
- type of material
- form of movement
What voltage can cause damage to ESD’s?
Voltages as low as 100V
What is static electricity?
The exchange of atomic electrons between two materials
How does the material affect the effect of static electricity?
The effect will be very low in conductive materials
The effect will be very high in non-conductive materials
How should ESD devices be stored and transported?
In anti-static materials
How should you clean ESD components?
With natural-bristle brushes
If an ESD is damaged, can it be repaired?
It can rarely be repaired, especially in large scale integrated circuits which are common on advanced circuit boards.
What must you do before removing an LRU or an ESD?
Turn off the power
