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Reed Switches in Comparison with Mechanical Switches

SpecificationsReed SwitchMechanical Microswitch
Sensing Distance – TouchUp to 40mm effectivelyTouch (zero distance)
Power Required at all TimesNoNo
Input RequirementsExternal magnetic field >5 gauss min.Mechanical Force
HysteresisAbility to adjust, to meet design requirementsDifferential Travel (D.T.)
Life Expectancy: Low Level1010 cycles106 cycles
Switching VoltageUp to 200V (10,000V available)250VAC
Switching Current / Carry CurrentUp to 3A / Up to 5AUp to 25A
Minimum Switching LoadNo load required (μV / pA)50mW
Maximum Switching LoadUp to 100 WattsUp to 5,000 Watts
Insulation Resistance1014 Ohm109 Ohm
Contact Resistance50 milliohm100 milliohm
NoiseAlmost no switching noiseSwitching noise
OverloadVery sensitiveInsensitive
HermeticityYesNo
GeneralGalvanic isolation (air gap)Galvanic isolation (air gap)
Assembly20,000 pcs5,000 pcs

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