Series G3B Ultra-Miniature Process Sealed SMT 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: 2.0N Travel: Pretravel: .024 (0.6mm) Overtravel: .019 (0.5mm) Total Travel: .043 (1.1mm) Materials & Finishes Actuator: Polyphenylene sulfide (UL94V-0) Case: Polyphenylene sulfide (UL94V-0) Sealing Rings: Nitrile butadiene rubber Movable Contacts: Phosphor bronze with gold plating Stationary Contacts: Phosphor bronze with gold plating Base: Polyphenylene sulfide (UL94V-0) Terminals: Phosphor bronze with gold plating Environmental Data Operating Temperature Range: 30C through +85C (22F through +185F) Humidity: 90 ~ 95% humidity for 96 hours 40C (104F) Vibration: 10 ~ 500Hz 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 Mounting: It is recommended that the body of models for upright mounting without bracket be fastened to a panel or similar support for protection of solder joints from mechanical stress. Coplanarity: See specifications in Terms & Acronyms in Supplement section. Processing Soldering: Reflow 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 Standard: UL94V-0 actuator, case & base The G3B 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. C52 www.nkk.com Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers TogglesUltra-Miniature Process Sealed SMT Pushbuttons Series G3B Distinctive Characteristics Ultra-miniature size allows high density mounting, and extremely light weight of 0.6 gram makes these switches ideal for handheld equipment. C Tape-reel and stick-tube packaging allow rapid automated placement of surface mount devices. Tape-reel packaging meets EIA-481-D Standard. Heat resistant resin used for housing, base, and plunger allows vapor phase and infrared convection reflow soldering. Combination of design features achieves total seal and allows automated processing techniques, including flux cleaning procedures: one-piece bushing and housing, rubber seals surrounding actuator and base, epoxy at joint of case and base, and molded-in, epoxy-sealed terminals. 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.) Gull-wing terminals provide mechanical stability during soldering and simplified solder joint inspection. Coplanarity: all considered surfaces must lie between two parallel planes that area maximum distance apart of .0059 (0.15mm). (Additional coplanarity details in Terms and Acronyms in the Supplement section.) Actual Size www.nkk.com C53 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles