Active

Diodes	Integrated circuits
Memory	Mosfet
Opto-electronics	Surge Suppressors
Semiconductors

Passive

Batteries	Capacitor
Crystal	Oscillators
Fuses	Inductors
Resistor	Thermistors
Thermostat	Transformers

Mechanical

Circuit Breaker	Connectors
DC Converters	Fan
Hardware	Magnetics Ferrite Cores and Bobbins
Optical Fiber Cable	Switches
Wire & Tubing	Relays Delay line
Cores	Bobbins

Chemical

Epoxy	Paint
Resin	Sprays
Thermal Conductor