AT478JC NKK Switches, AT478JC Datasheet - Page 2

• Manufacturer Part Number: AT478JC
• Description: SW CAP SQUARE SW CAP CLEAR RED
• Manufacturer: NKK Switches
• Series: LBr
• Type: Cap, Square for LED with Lens/Diffuserr

Specifications of AT478JC

• Switch Type: Pushbutton
• Shape: Square
• Color: Clear, Red
• Illumination: Illuminated
• Mounting Type: Snap Fit
• Size: 13.20mm L x 13.20mm W x 3.50mm H
• Height: 10 mm
• Length: 13.2 mm
• Mounting Style: SMD/SMT
• Termination Style: Snap On
• Width: 13.2 mm
• For Use With/related Products: LB Series
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: LB Series

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Electrical Capacity (Resistive Load)
Other Ratings
Materials & Finishes
Environmental Data
Installation
Standards & Certifications
Soldering Time & Temperature:
Travel for Momentary Circuit:
Travel for Maintained Circuit:
Nominal Operating Force:
Flammability Standards:
Operating Temp Range:
Cap Installation Force:
Insulation Resistance:
Quick Connect Force:
Stationary Contacts:
Power Level (silver):
Common Terminals:
Contact Resistance:
Dielectric Strength:
R
Logic Level (gold):
Movable Contact:
Lamp Terminals:
Mechanical Life:
Contact Timing:
Snap-in Frame:
UL Recognized:
End Terminals:
CSA Certified:
Electrical Life:
Process Seal:
Vibration:
Humidity:
Note: See
Housing:
Sealing:
Shock:
Base:
Supplement Index
3A @ 125V AC or 3A @ 250V AC or 3A @ 30V DC
0.4VA maximum @ 28V AC/DC maximum
50 milliohms maximum for silver; 100 milliohms maximum for gold
200 megohms minimum @ 500V DC
1,000V AC minimum between contacts; 1,500V AC minimum between contacts & case
1,000,000 operations minimum for momentary circuit
200,000 operations minimum for maintained circuit
100,000 operations minimum
450 grams
Nonshorting (break-before-make)
1.9mm (.075") pretravel; 1.1mm (.043") overtravel; 3.0mm (.118") total travel
2.2mm (.087") pretravel; 0.8mm (.031") overtravel; 3.0mm (.118") total travel
Glass fiber reinforced polyamide
Stainless steel
Silver alloy or copper with gold plating over nickel plating
Silver alloy or copper with gold plating over nickel plating
Diallyl phthalate
Phosphor bronze with silver or gold plating
Phosphor bronze with silver or gold plating
Phosphor bronze with silver plating
-25 C through +50 C (-13 F through +122 F) for illuminated
-25 C through +70 C (-13 F through +158 F) for nonilluminated
Note: When used with a polyvinyl chloride splash cover, the lowest limit is 0 C (32 F)
93% humidity for 96 hours @ 40 C (104 F)
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
50g acceleration (tested in 6 right angled directions, with 5 shocks in each direction)
Not available for snap-in; see panel seal section.
0.4 kg (.88 lb) maximum downward force on actuator
5.4 kg (11.9 lbs) maximum downward force on connector
3 seconds @ 350 C or 5 seconds @ 270 C
Not available
All models recognized at 3A @ 125V or 250V AC or
0.4VA maximum @ 28V AC/DC maximum; UL File No. E44145
All models certified at 3A @ 125V or 250V AC or
0.4VA maximum @ 28V AC/DC maximum; CSA File Nos. LR23535
UL94V-0 base
GENERAL SPECIFICATIONS
to find explanation of operating range.
Standard Size Pushbutton Switches
Series LB
www.nkkswitches.com
5-8-01