Series GB2 Ultra-Thin Pushbuttons General Specifications Electrical Capacity (Resistive Load) Logic Level: 0.4VA maximum 28V AC/DC maximum (Applicable Range 0.1mA ~ 0.1A 20mV ~ 28V) C Note: Find additional explanation of operating range in Supplement section. 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: 1.0N Travel: Pretravel .020 (0.5mm) Overtravel .023 (0.6mm) Total Travel .043 (1.1mm) Materials & Finishes Actuator: Glass fiber reinforced polyamide (UL94V-0) Case: Glass fiber reinforced polyamide (UL94V-0) Movable Contacts: Phosphor bronze with gold plating Stationary Contacts: Brass with gold plating Base: Glass fiber reinforced polyamide (UL94V-0) Mounting Bracket: Phosphor bronze with tin plating Terminals: Brass with gold plating Environmental Data Operating Temperature Range: 25C through +70C (13F through +158F) Humidity: 90 ~ 95% humidity for 240 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) PCB Processing Soldering: Wave Soldering Recommended: See Profile A in Supplement section. Manual Soldering: See Profile A in Supplement section. Cleaning: These devices are not process sealed. Hand clean locally using alcohol based solution. Standards & Certifications Flammability Standards: UL94V-0 actuator, case, & base The GB2 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. C48 www.nkk.com Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers TogglesUltra-Thin Pushbuttons Series GB2 Distinctive Characteristics Unique, off-center actuator allows high density setup and easy actuation while avoiding accidental operation in compact environments. C Side-by-side, block mounting can be achieved by use of bracket AT546 on straight PC mounting types. Off-Momentary On Circuit. Black, white, and red snap-on caps available. Extremely thin size allows high density PCB mounting and makes these switches ideal for handheld equipment. 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.) Molded-in, epoxy sealed terminals lock out flux and other contaminants100 x .100 (2.54mm x 2.54mm) terminal spacing conforms to standard PC board grid spacing for straight and angle mounting. Actual Size www.nkk.com C49 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles