Series M2 Process Sealed Miniature Pushbuttons General Specifications Electrical Capacity (Resistive Load) Power Level (silver): 1A 125V AC or 1A 30V DC Logic Level (gold): 0.4VA maximum 28V AC/DC maximum (Applicable Range 0.1mA ~ 0.1A 20mV ~ 28V) Logic/Power Level: Combines silver & gold ratings C (gold over silver) Note: Find additional explanation of dual rating & operating range in Supplement section. Other Ratings Contact Resistance: 20 milliohms maximum for silver 30 milliohms maximum for gold Insulation Resistance: 1,000 megohms minimum 500V DC Dielectric Strength: 1,000V AC minimum between contacts for 1 minute minimum 1,500V AC minimum between contacts & case for 1 minute minimum Mechanical Life: 200,000 operations minimum Electrical Life: 25,000 operations minimum for silver 100,000 operations minimum for gold Nominal Operating Force: Single pole 2.94N & double pole 4.90N Contact Timing: Nonshorting (break-before-make) Travel: Pretravel .023 (0.6mm) Overtravel .016 (0.4mm) Total Travel .039 (1.0mm) Materials & Finishes Plunger: Brass with nickel plating Support Bracket: Brass with tin plating Bushing/Housing: Glass fiber reinforced polyamide (UL94V-0) Sealing Ring: Nitrile butadiene rubber Base: Glass fiber reinforced polyamide (UL94V-0) Movable Contacts: Silver alloy with silver plating (code W) copper with gold plating (code G) or silver alloy with gold plating (code A) Stationary Contacts: Silver alloy with silver plating (code W) copper with gold plating (code G) or silver alloy with gold plating (code A) Terminals: Brass with silver or gold plating Environmental Data Operating Temp Range: 30C through +85C (22F through +185F) Humidity: 90 ~ 95% humidity for 96 hours 40C (104F) Vibration: 10 ~ 55Hz with peak-to-peak amplitude of 1.5mm traversing the frequency range & returning in 1 minute 3 right angled directions for 2 hours 2 Shock: 50G (490m/s ) acceleration (tested in 6 right angled directions, with 5 shocks in each direction) Installation Cap Installation Force: 49.0N (11.0 lbf) for plunger A & 79.4N (17.9 lbf) for plunger B PCB Processing Soldering: Wave Soldering Recommended: See Profile B in Supplement section. Manual Soldering: See Profile B in Supplement section. Cleaning: Automated cleaning. See Cleaning specifications in Supplement section. Standards & Certifications Flammability Standards: UL94V-0 rated bushing/housing & base UL: File No. E44145 - Recognized only when ordered with marking on switch. Add /U or /CUL before dash in part number to order UL recognized switch. All models recognized at 1A 125V AC, 1A 30V DC, or 0.4A 28V DC. CSA: File No. 023535 0 000 - Certified only when ordered with marking on switch. Add /C before dash in part number to order CSA certified switch. All models certified at 1A 125V AC, 1A 30V DC, or 0.4A 28V DC. C64 www.nkkswitches.com Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers TogglesProcess Sealed Miniature Pushbuttons Series M2 Distinctive Characteristics Snap-acting contact mechanism gives short travel, sensitive actuation, light touch, smooth feel, audible feedback, and a longer electrical life. C Single unit construction of the bushing and top of the housing gives protection from cleaning fluids or other liquids. O-ring surrounding actuator at top of bushing interior prevents liquids from reaching switch mechanism. Ultrasonic welding of upper and lower housing seals out contaminants and allows automated soldering and cleaning. Terminals are epoxy sealed to prevent entry of flux, solvents, and other contaminants. Bracketed models have crimped bracket legs to ensure secure PC mounting and prevent dislodging during automated soldering. Logic level and power capabilities are available to suit varying applications. Actual Size www.nkkswitches.com C65 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles