Low Profile Pushbuttons
Series UB2
Distinctive Characteristics
Combination of PCB mountability and short body allows use in compact
applications.
Small behind panel dimension for snap-in mounting in tight spaces.
Snap-acting contact mechanism provides sensitive actuation
with audible feedback.
Latchdown mechanism, independent of
switching mechanism, gives visible, audible,
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.
Illuminated models available and shown in Illuminated
Pushbutton section.
Matching indicators available and shown at the end of Section M.
Actual Size
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
Low Profile Pushbuttons
Series UB2
General Specifications
Electrical Capacity (Resistive Load)
Power Level (code W):
Logic Level (code G):
5A @ 125/250V AC or 5A @ 30V DC
0.4VA maximum @ 28V AC/DC maximum
(Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)
Note: Find additional explanation in Supplement section.
Other Ratings
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
Mechanical Life:
Electrical Life:
Nominal Operating Force:
Contact Timing:
Travel:
50 milliohms maximum for silver; 100 milliohms maximum for gold
200 megohms minimum @ 500V DC
1,000V AC minimum between contacts for 1 minute minimum;
1,500V AC minimum between contacts & case for 1 minute minimum
1,000,000 operations minimum for momentary;
200,000 operations minimum for alternate action
10,000 operations minimum for silver;
200,000 operations minimum for gold
Single Pole: 1.90N
Double Pole: 2.55N
Break before make
Pretravel .067” (1.7mm); Overtravel .024” (0.6mm); Total Travel .091” (2.3mm)
Materials & Finishes
Housing/Bezel:
Snap-in Frame:
Movable Contactor:
Movable Contacts:
Stationary Contacts:
Terminals:
Base:
Glass fiber reinforced polyamide (UL94V-0)
Stainless steel
Phosphor bronze
Silver alloy or copper with gold plating
Silver alloy or copper with gold plating
Phosphor bronze with silver or gold plating
Glass fiber reinforced liquid crystal polymer (UL94V-0)
Environmental Data
Operating Temp Range:
Humidity:
Vibration:
Shock:
–25°C through +70°C (–4°F through +158°F)
90 ~ 95% humidity for 240 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 (490m/s
2
) acceleration (tested in 6 right angled directions, with 5 shocks in each direction)
Installation
Processing
Cap Installation Force:
15.0N maximum downward force on cap
Soldering:
Cleaning:
Wave Soldering (PC version): See Profile A in Supplement section.
Manual Soldering: See Profile A in Supplement section.
These devices are not process sealed. Hand clean locally using alcohol based solution.
Standards & Certifications
Flammability Standards:
UL & C-UL Recognized:
UL94V-0 housing/bezel & base
All single & double pole models recognized at 5A @ 125/250V AC or 0.014A @ 28V DC;
UL File No. WOYR2.E44145 & C-UL File No. WOYR8.E44145;
add “/U” to end of part number to order UL mark on switch & add “/U-C” to end of
part number to order C-UL mark on switch (equivalent to CSA certification).
R
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
Low Profile Pushbuttons
TYPICAL SWITCH ORDERING EXAMPLE
Series UB2
N
5C
CAP TYPES & COLORS
Sculptured Cap
Lens/Insert Colors
4JA
4JB
4JC
4JD
4JF
Clear/Black
Clear/White
Clear/Red
Clear/Amber
Clear/Green
Beveled Cap
& Colors
5A
5B
5C
5D
5F
Black
White
Red
Amber
Green
UB2
POLES
1
2
SPDT
DPDT
1
5
CIRCUITS
5
6
ON
ON
(ON)
ON
( ) = Momentary
Alternate Action
with Latchdown
SK
G
03
CONTACTS & RATINGS
W
G
Silver Rated 5A
@ 125/250V AC
Gold Rated 0.4VA max
@ 28V AC/DC max
MOUNTING TYPES
PCB Mounting
SK
KK
Square
* Snap-in Mounting
Square
* Standard with Solder
Lug terminals
01
TERMINALS
Solder Lug (for
Snap-in Mounting)
IMPORTANT:
Switches are supplied without UL
& C-UL marking unless specified.
Specific models & ratings noted on
General Specifications page.
03
Straight PC
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
UB215SKG03N-5C
Red Beveled Cap
Note: Flat Cap with clear
lens and colored
diffuser available;
see Illuminated
Pushbuttons section
Gold Contacts with 0.4VA Rating
Square with PCB Mounting
SPDT ON-(ON) Circuit
Straight PC Terminals
POLES & CIRCUITS
Plunger Position
( ) = Momentary
Normal
Pole
SP
DP
Model
UB215
*UB216
UB225
*UB226
ON
ON
ON
ON
(ON)
ON
(ON)
ON
1-3
1-3 4-6
1-2
1-2 4-5
Down
Connected Terminals
Normal
Down
Note:
Throw & Schematics
Switch is marked with NC, NO, COM, L+ & L–.
1
3
1
3
COM
NO
6
NC
COM
2
NO
4
NC
COM
5
NO
SPDT
DPDT
NC 2
* When in latchdown position for the alternate circuit, cap positions above the housing are:
.059” (1.5mm) for snap-in models & .276” (7.0mm) for PCB models.
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
Low Profile Pushbuttons
MOUNTING TYPES & SHAPES
PCB Mounting
Series UB2
SK
Square
Single Pole
(5.08)
.200
3
Double Pole
(5.08) Typ
.200
6
3
2
1
(5.08) Typ
.200
5
4
2
1
(5.08) Typ
.200
C
L
(1.2) Dia Typ
.047
C
L
(1.2) Dia Typ
.047
Snap-in Mounting (Solder Lug)
KK
Square
with Built-in Bezel
(17.4) Sq
.685
Panel Thickness:
.039 ~ .126”
(1.0 ~ 3.2mm)
CONTACT MATERIALS & RATINGS
W
G
Silver Contacts
Power Level
5A @ 125V AC & 250V AC
Gold Contacts
Logic Level
0.4VA maximum @ 28V AC/DC maximum
Complete explanation of operating range in Supplement section.
TERMINALS
01
Solder Lug
(1.6)
.063
(0.2)
.008
(5.0)
.197
03
Straight PC
(2.0)
.079
(0.8)
.032
Thk = (0.5)
.020
(0.2)
.008
(4.0)
.157
(1.0)
.039
Thk = (0.5)
.020
CAP TYPES & COLOR COMBINATIONS
4
AT3073 Sculptured
(6.1)
.240
5
AT3077 Beveled
(5.6)
.220
Lens/Insert
Colors Available:
Cap
Colors Available:
JA
JB
JC
Clear/
Black
Clear/
White
Clear/
Red
(15.0) Sq
.591
A
B
Clear Lens
Black
White
Red
(15.0) Sq
.591
JD
JF
Clear/
Amber
Clear/
Green
Opaque
Colored Insert
D
F
Amber
Green
Opaque
Colored Cap
03-07
C
Material: Polycarbonate
Finish: Glossy
Material: Polycarbonate
Finish: Glossy
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
Low Profile Pushbuttons
TYPICAL SWITCH DIMENSIONS
Single Pole • PCB Mount
(6.1)
.240
Series UB2
3
(15.0) Sq
.591
(0.5) Typ
.020
(5.08) Typ
.200
L +
N.C.
2
1
N.O.
COM
L –
(15.24) Sq
.600
(1.5)
.059
(0.5)
.020
(7.0)
(10.0) (4.0)
.276
.157
.394
Latchdown Position
(1.0)
.039
(5.08)
.200
UB215SKG03N-4JC
Double Pole • PCB Mount
(6.1)
.240
3
N.C.
L +
N.C.
6
5
(15.0) Sq
.591
2
1
N.O.
COM.
L –
(5.08) Typ
.200
N.O.
COM.
4
(15.24) Sq
.600
(1.5)
.059
(0.5)
.020
(7.0)
(10.0) (4.0)
.276
.157
.394
Latchdown Position
(0.5) Typ
.020
(1.0) Typ
.039
(5.08) Typ
.200
UB225SKG03N-4JC
Single Pole • Snap-in Mount • Solder Lug
(3.0)
.118
(0.8) x (1.6) Typ
.032 x .063
3
(15.0) Sq
.591
(5.08) Typ
.200
L +
N.C.
2
N.O.
COM
L –
1
(19.0) Sq
.748
(1.5)
.059
(1.4)
.055
(15.5)
(5.0)
.610
.197
Latchdown Position
(0.5) Typ
.020
(2.0)
.079
(5.08)
.200
UB216KKW01N-4JC
Double Pole • Snap-in Mount • Solder Lug
(3.0)
.118
(0.8) x (1.6) Typ
.032 x .063
3
L +
N.C.
N.C.
6
5
(15.0) Sq
.591
2
1
N.O.
COM.
L –
(5.08) Typ
.200
N.O.
COM.
4
(19.0) Sq
.748
(1.5)
.059
(1.4)
.055
(15.5)
(5.0)
.610
.197
Latchdown Position
(0.5) Typ
.020
(2.0) Typ
.079
(5.08) Typ
.200
UB226KKW01N-4JC
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
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