Environmental Considerations
The environment in which a PCB is to be used will change a number of factors needed to design and test it. The ambient temperature is one of these important factors.
| Worst Case Environments | ||||
| Cat | USE | Min Temp | Max Temp | Service |
| 1 | Consumer | 0°C | 60°C | 1-3 Yrs |
| 2 | Computer | 15°C | 60°C | ~5 Yrs |
| 3 | Telecomm | -40°C | 85°C | 7-20 Yrs |
| 4 | Civ Aircraft | -55°C | 95°C | ~10 Yrs |
| 5 | Industrial | -55°C | 55°C | ~10 Yrs |
| Auto Pass Cmp | -55°C | 55°C | ~10 Yrs | |
| 6 | Mil | Gnd/Ship°C | 95°C | ~5 Yrs |
| 7 | Space | -40°C | 85°C | 5-20 Yrs |
| 8 | Mil Aircraft | -55°C | 95°C | ~5 Yrs |
| 9 | Auto Engine | -55°C | 125°C | ~5 Yrs |
