NKK sealed 3 position momentary Miniature PCB toggle Switches A18AB A 18

Product Overview

Description

NKK sealed 3 position momentary Miniature PCB toggle Switches A18AB A-18
Subminiature size saves space on PC boards.
Specifically developed for logic-level applications.
Totally sealed body construction prevents contact contamination
and allows time- and money-saving automated soldering and washing.
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;
Molded-in, epoxy sealed or ultrasonically welded terminals lock out flux, solvents, and other contaminants.
.100" x .100" terminal spacing conforms to standard PC board grid spacing.
Toggle option in antistatic material available for dissipating electrostatic discharges.
Matching indicators available and shown in the Indicator section.
Electrical Capacity (Resistive Load)
Model : A18AB
Circuit : SPDT ;
Switch Function : Mom-Off-Mom ; (ON)-OFF-(ON) ;
Electrical Capacity (Resistive Load)
Logic Level: 0.4VA maximum @ 28V AC/DC maximum (Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)
Other Ratings
Contact Resistance: ≤50 mΩ
Insulation Resistance: 500 MΩ @ 500V DC
Dielectric Strength: 500V AC min. between contacts for 1 minute minimum;
500V AC minimum between contacts & case for 1 minute minimum
Mechanical Life: ≥50,000 operations
Electrical Life: 50,000 operations min
Nominal Operating Force: 1.47N
Contact Timing: Nonshorting (break-before-make)
Angle of Throw: 26°
Materials & Finishes
Toggle: Glass fiber reinforced polyamide for antistatic; nickel plated brass for all others
Case Housing: Glass fiber reinforced polyamide
Support Bracket: Tin plated phosphor bronze
Movable Contact: Phosphor bronze with gold plating
Stationary Contacts: Brass with gold plating
Terminals: Brass with gold plating
Environmental Data
Operating Temperature Range: -30°C through +85°C (-22°F through +185°F)
Humidity: 90 ~ 95% humidity for 240 hours @ 40°C (104°F)
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
Shock: 50G (490m/s2) 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 B in Supplement section.
Cleaning: Automated cleaning. See Cleaning Specifications in Supplement section.