Mechanical Relay Construction Types, Terminology, & Characteristics

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Tech Tip: Since the plastic material is porous, please avoid atmospheric exposure to silicone, especially in enclosed, high temperature, low pressure/vacuum, or humid environments.
This can include silicone substances such as silicone rubber, silicone oil, silicone caulking compound, silicone-based coating materials, and silicone based thermal pastes. When silicone is used near a relay (or other switching mechanism), switching the contacts in the presence of its gas causes silicone to adhere to the contacts and may result in contact failure (silicone gas may penetrate into the inside of the relay through the plastic - in plastic sealed types, too). In this case, use a substitute that is not silicone-based. Otherwise, A hermetically sealed type sometimes referred to as “Sealed capsule type” is the only relay construction type protected for use around silicone being it is airtight and hermetically sealed.

Source - Panasonic Relay Terminology


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Associated Terms

Type
Soldering
Cleaning
Resistance
Dust Cover
Flux-Resistant
Terminals
molded
sealing resin
Sealed
capsule
Hermetically
hermetic
Harmful Gas