Thumbwheel Switches
Specifications of Thumbwheel & Pushwheel Switches

 

 

FEATURES

  1. Wide range of choice:
    • Actuating: pushwheel & thumbwheel
    • Mounting: front mount & rear mount
    • Sizes: large, middle enhanced, middle, small
    • Output codes: BCD, BCD complement, decimal, repeating, double pole decimal
    • Terminations: PCB terminal, PCB with PC pin, PCB with row pin
    • Colors: black, gray, ivory
    • Accessories: blanks, endcaps, connectors
  2. Snap-In, easy connecting & easy mounting without rods and nuts.
  3. Show out its contact setting at all time.
  4. The movement of the wheel can be limited by stops.
 

MATERIALS

  1. Housing, Blank, Endcap, Wheel, Push button: Thermoplastic / Polyacetal, UL94HB.
  2. Moving contact: Hard gold flash over nickel plated on phosphor bronze.
  3. Printed circuit board: Hard gold flash over nickel plated on 0.79mm thickness epoxy laminate.
  4. PC Board: Epoxy laminate FR-4.
 

SPECIFICATIONS

  1. Electrical Capacity:
    1. Operating voltage: 50V AC / 28V DC maximum
    2. Switching current: 100 mA maximum
    3. Carrying current: 1A maximum (500 mA max. for small size series)
  2. Contact resistance: (Per Method 307 of MIL-STD-202) 200mΩ maximum
  3. Insulation resistance: (Per Method 302 of MIL-STD-202)
    1. Between common terminal and any output : 10MΩ minimum
    2. Between each output and non-current-carrying part : 1000MΩ minimum
  4. Dielectric strength: (Per Method 301 of MIL-STD-202)
    1. Between common terminal and any output: 800V AC 1 minute
    2. Between each output and non-current-carrying part: 1000V AC 1 minute
  5. Operating temperature: -20°C to +70°C
  6. Operating force: 350 g maximum
  7. Soldering temperature : 260°C for 5 seconds.
  8. Life
    1. Mechanical: 200,000 detent operations
    2. Electrical: 100,000 detent operations
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