BB25AB-HC NKK Switches

Series BB Process Sealed Subminiature Antistatic 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: 50 milliohms maximum Insulation Resistance: 500 megohms minimum 500V DC Dielectric Strength: 500V AC minimum for 1 minute minimum Mechanical Life: 50,000 operations minimum (momentary) 25,000 operations minimum (alternate action) Electrical Life: 50,000 operations minimum (momentary) 25,000 operations minimum (alternate action) Nominal Operating Force: 2.55N (momentary) 2.94N (alternate action) Contact Timing: Nonshorting Travel: Momentary: Pretravel .028 (0.7mm) Overtravel .016 (0.4mm) Total Travel .043 (1.1mm) Alternate: Pretravel .039 (1.0mm) Overtravel .039 (1.0mm) Total Travel .079 (2.0mm) Materials & Finishes Plunger: Polyacetal Bushing: Carbon blended polyamide Case Housing: Glass fiber reinforced polyamide Support Bracket: Tin plated phosphor bronze Movable Contact: Phosphor bronze with gold plating Stationary Contacts: Copper alloy with gold plating Terminals: Copper alloy 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: 49.03N (11.2 lbf) maximum downward force on actuator actuator must be in UP position to remove cap from alternate action models PCB Processing Soldering: Wave Soldering Recommended: See Profile A 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 available The BB 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. C12 www.nkkswitches.com Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers TogglesProcess Sealed Subminiature Antistatic Pushbuttons Series BB Distinctive Characteristics Subminiature size (1/3 size of Series M switches) saves space on PC boards. Specifically developed for logic-level applications. C Available in momentary and maintained circuits. Industrys smallest alternate action (maintained) pushbutton with latchdown feature providing visible, audible, and tactile feedback. Antistatic superstructure, consisting of the carbon impregnated bushing and the support bracket, prevents static discharge to the contacts. Static electricity from an operators touch travels from the actuator through the bushing and bracket to the PC board. 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.) Smooth, 6mm diameter bushing simplifies panel layout. Totally sealed body construction prevents contact contamination and allows time- and money-saving soldering and cleaning100 x .100 (2.54mm x 2.54mm) terminal spacing conforms to standard PC board grids. Actual Size www.nkkswitches.com C13 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles