FAQ - Frequently Asked Questions - How to select components for harsh environments
Intro
Products used in harsh environments require components selected for temperature, vibration, humidity, dust, electrical stress, UV exposure, corrosion and long-term reliability.
Electrical specifications alone are not enough. Mechanical and environmental conditions must be part of the selection process.
Key technical selection criteria
Evaluate:
- operating temperature
- storage temperature
- humidity
- vibration
- shock
- ingress protection
- UV exposure
- corrosion risk
- ESD
- surge protection
- connector robustness
- enclosure compatibility
- coating compatibility
Components to review
Pay extra attention to:
- connectors
- displays
- sensors
- antennas
- power supplies
- switches
- motor drivers
- cables
- external interfaces
- batteries
Environmental risks
Check for:
- condensation
- dust
- salt mist
- vibration
- mechanical stress
- thermal cycling
- water ingress
- chemical exposure
- sunlight exposure
Protection strategy
Possible measures include:
- sealed connectors
- conformal coating
- surge protection
- ESD protection
- rugged displays
- external antenna protection
- industrial temperature components
- strain relief
- proper enclosure sealing
Common mistakes
- selecting only by electrical rating
- ignoring connector sealing
- using indoor antennas outdoors
- forgetting condensation
- poor cable strain relief
- no protection on external interfaces
- not testing under real environmental stress
Decision checklist
Before selecting components, define:
- operating environment
- temperature range
- humidity exposure
- vibration level
- ingress protection needs
- connector type
- cable exposure
- serviceability
- expected product lifetime
- certification requirements
Need help selecting components for demanding environments? TOP-electronics can support technical selection and availability review.
TOP themes
IoT, motion control, sensors, displays, power and industrial applications.
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