B28AH NKK Switches

Series B Process Sealed Subminiature Antistatic Toggles A 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. 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: 100,000 operations minimum for On-None-On & On-Off-On 50,000 operations minimum for other circuits 50,000 operations minimum for locking lever models Electrical Life: 50,000 operations minimum Nominal Operating Force: Toggles A, A1 & E: 1.47N (momentary) 1.18N (maintained) Toggles J & H: 2.72N (momentary) 1.84N (maintained) Toggle L: 0.59N Contact Timing: Nonshorting (break-before-make) Angle of Throw: 26 Materials & Finishes Toggle: Nickel plated brass Bushing: Carbon blended polyamide nickel plated zinc alloy for locking levers & threaded bushing Gasket: Nitrile butadiene rubber 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 Temperature 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 Mounting Torque: .30 ~ .45Nm (2.65 ~ 3.98 lbin) for A1 actuator with threaded bushing only 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 Flammability Standards: UL94V-0 available The B Series toggles 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. A12 www.nkkswitches.com 0 6/2 2/20 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers TogglesProcess Sealed Subminiature Antistatic Toggles Series B A Distinctive Characteristics Subminiature size saves space on PC boards. Specifically developed for logic-level applications. 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 actuator through the bushing and bracket to the PC board. Locking lever mechanism offered as a toggle option. Optional threaded, 6mm diameter bushing for panel seal mounting meets IP65 of IEC 60529 specifications (similar to NEMA 4 and 13). Totally sealed body construction prevents contact contamination and allows time- and money-saving soldering and cleaning. Epoxy sealed terminals lock out flux and other contaminants. 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. Actual Size www.nkkswitches.com A13 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles