Series UB Low Profile Pushbuttons General Specifications Electrical Capacity (Resistive Load) Power Level (silver): 5A 125/250V AC or 5A 30V DC Logic Level (gold): 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 for silver 100 milliohms maximum for gold Insulation Resistance: 200 megohms minimum 500V DC Dielectric Strength: 1,000V AC minimum between contacts for 1 minute minimum D 1,500V AC minimum between contacts & case for 1 minute minimum Mechanical Life: 1,000,000 operations minimum for momentary 200,000 operations minimum for alternate action Electrical Life: 10,000 operations minimum for silver 100,000 operations minimum for silver with resistive load of 3A 125V AC 200,000 operations minimum for gold Nominal Operating Force: Single Pole: 1.9N for Square & 1.9N for Rectangular Double Pole: 2.55N for Square & 3.1N for Rectangular Contact Timing: Break before make Travel: Pretravel .067 (1.7mm) Overtravel .024 (0.6mm) Total Travel .091 (2.3mm) Materials & Finishes Housing/Bezel: Glass fiber reinforced polyamide (UL94V-0) Snap-in Frame: Stainless steel Movable Contactor: Phosphor bronze Movable Contacts: Silver alloy or copper with gold plating Stationary Contacts: Silver alloy or copper with gold plating Switch Terminals: Phosphor bronze with silver or gold plating Lamp Terminals: Brass with silver plating Base: Glass fiber r einforced liquid crystal polymer (UL94V-0) Environmental Data Operating Temperature Range: 25C through +50C (13F through +122F) for Illuminated 20C through +70C (4F through +158F) for Nonilluminated 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: 7.55N (1.70 lbf) maximum downward force on cap Soldering Time & Temp: Wave Soldering (PC version): See Profile A in Supplement section. Manual Soldering: See Profile A in Supplement section. Cleaning: These devices are not process sealed. Hand clean locally using alcohol based solution. Standards & Certifications Flammability Standards: UL94V-0 housing/bezel & base UL: File No. E44145 - Recognized only when ordered with marking on switch. Add /U or /CUL before dash in part number to order UL recognized switch. UL recognized only when ordered switch body with cap assembled. All single & double pole models recognized at 5A 125/250V AC or 0.014A 28V DC. CSA: File No. 023535 0 000 - Certified only when ordered with marking on switch. Add /C before dash in part number to order CSA certified switch. All single & double pole models certified at 5A 125/250V AC or 5A 30V DC or 0.4VA maximum 28V AC/DC maximum. D78 www.nkk.com Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers TogglesLow Profile Pushbuttons Series UB Distinctive Characteristics Bright or super bright LEDs (an integral part of the switch) of red, amber, green, blue, or white, in full face or spot illumination plus square or rectangular models. Combination of PCB mountability and short body allows use in compact applications. D Small behind panel dimension for snap-in mounting in tight spaces. Snap-acting contact mechanism provides sensitive actuation with audible feedback quick-make, quick-break characteristic limits arcing and prolongs electrical life. Latchdown mechanism, independent of switching mechanism, gives visible and tactile indication of circuit status. Terminals are epoxy sealed to lock out flux, solvents, and other contaminants. Momentary and alternate action circuits available in the same space-saving body size. Matching indicators available. Actual Size www.nkk.com D79 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles