Series GB Process Sealed Ultra-Miniature Pushbuttons General Specifications Electrical Capacity (Resistive Load) Logic Level: 0.4VA maximum 28V AC/DC maximum (Applicable Range 0.1mA ~ 0.1A 20mV ~ 28V) Note: Find additional explanation of operating range in Supplement section. C Other Ratings Contact Resistance: 80 milliohms maximum Insulation Resistance: 500 megohms minimum 500V DC Dielectric Strength: 500V AC minimum for 1 minute minimum Mechanical Life: 50,000 operations minimum Electrical Life: 50,000 operations minimum Nominal Operating Force: 1.70N Travel: Pretravel .035 (0.9mm) Overtravel .008 (0.2mm) Total Travel .043 (1.1mm) Materials & Finishes Actuator: Polyacetal Case: Glass fiber reinforced polyamide Sealing Rings: Nitrile butadiene rubber Movable Contacts: Phosphor bronze with gold plating Stationary Contacts: Phosphor bronze with gold plating Base: Glass fiber reinforced polyamide Mounting Bracket: Phosphor bronze with tin plating Terminals: Phosphor bronze with 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: 39.1N (8.8 lbf) maximum downward force on actuator PCB Processing Soldering: Wave Soldering Recommended: See Profile A in Supplement section. Manual Soldering: See Profile A in Supplement section. Cleaning: Automated cleaning. See Cleaning specifications in Supplement section. Standards & Certifications The GB Series pushbuttons have not been tested for UL recognition or CSA certification. These switches are designed for use in a low-voltage, low-current, logic-level circuit. When used as intended in a logic-level circuit, the results do not produce hazardous energy. C44 www.nkk.com Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers TogglesProcess Sealed Ultra-Miniature Pushbuttons Series GB Distinctive Characteristics Ultra-miniature size allows high density mounting, and extremely light weight of 0.25 gram makes these switches ideal for handheld equipment. C Totally sealed body construction prevents contact contamination and allows time- and money-saving automated soldering and cleaning. Award-winning STC contact mechanism with benefits unavailable in conventional mechanisms: smoother, positive detent actuation, increased contact stability and unparalleled logic-level reliability. (Additional STC details in Terms & Acronyms see Supplement section.) .100 x .100 (2.54mm x 2.54mm) terminal spacing conforms to standard PC board grid- spacing. Round terminals facilitate easier through-hole mounting on PC boards. Matching indicators available. Actual Size www.nkk.com C45 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles