Harsh Environment
- Many embedded systems do not have a controlled environment
  - Heat from combustion / limited cooling
  - Vibration / shock
  - Lightning / Electromagnetic Interference (EMI) /
       Electrostatic Discharge (ESD)
  - "Dirty" power supplies
  - Water / corrosion
  - Fire
  - Shipping damage
  - Physical abuse ("drop test")
Design challenges:
  - Accurate thermal modelling
  - De-rating components differently for each design, depending
       on operating environment