Series UB
Low Profile Pushbuttons
General
Specifications
Electrical Capacity (Resistive Load)
Power Level (silver):
Logic Level (gold):
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 of operating range in Supplement section.
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;
100,000 operations minimum for silver with resistive load of 3A @ 125V AC
200,000 operations minimum for gold
Single Pole: 1.9N for Square & 1.9N for Rectangular
Double Pole: 2.55N for Square & 3.1N for Rectangular
Break before make
Pretravel .067” (1.7mm); Overtravel .024” (0.6mm); Total Travel .091” (2.3mm)
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
Brass with silver plating
Glass fiber reinforced liquid crystal polymer (UL94V-0)
–25°C through +50°C (–13°F through +122°F) for Illuminated
–20°C through +70°C (–4°F through +158°F) for Nonilluminated
90 ~ 95% 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 (490m/s
2
) acceleration (tested in 6 right angled directions, with 5 shocks in each direction)
7.55N (1.70 lbf) maximum downward force on cap
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.
UL94V-0 housing/bezel & base
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.
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.
Pushbuttons
Rockers
Toggles
Other Ratings
Programmable
Illuminated PB
D
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
Mechanical Life:
Electrical Life:
Nominal Operating Force:
Contact Timing:
Travel:
Keylocks
Materials & Finishes
Rotaries
Housing/Bezel:
Snap-in Frame:
Movable Contactor:
Movable Contacts:
Stationary Contacts:
Switch Terminals:
Lamp Terminals:
Base:
Slides
Tactiles
Environmental Data
Operating Temperature Range:
Humidity:
Vibration:
Tilt
Shock:
Installation
Touch
Cap Installation Force:
Soldering Time & Temp:
Cleaning:
Indicators
Standards & Certifications
Flammability Standards:
UL:
Accessories
CSA:
Supplement
D78
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Low Profile Pushbuttons
Series UB
Toggles
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.
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.
Momentary and alternate action circuits available in the
same space-saving body size.
www.nkk.com
D79
Supplement
Accessories
Indicators
Actual Size
Touch
Matching indicators available.
Tilt
Tactiles
Terminals are epoxy sealed to lock out flux,
solvents, and other contaminants.
Slides
Latchdown mechanism, independent of
switching mechanism, gives visible and
tactile indication of circuit status.
Rotaries
Keylocks
Programmable
Illuminated PB
Combination of PCB mountability and short body
allows use in compact applications.
Pushbuttons
Rockers
Series UB
Toggles
Low Profile Pushbuttons
TYPICAL SWITCH ORDERING EXAMPLE
Pushbuttons
Rockers
UB
Poles
1
SPDT
DPDT
2
1
5
Mounting Types
PCB Mounting
SK
RK
Square
Rectangular
Square
Rectangular
SK
G
LEDs
03
5C
CC
Cap Types & Colors
Full Face Illuminated Cap
for Bright LED
Lens/Diffuser Colors
CB
*CJ
Red/White
Red/Clear
FF
*FJ
JB
Green/Green
Green/Clear
Clear/White
CC
Red/Red
DB
Amber/White
DD
Amber/Amber
*DJ
FB
Amber/Clear
Green/White
Programmable
Illuminated PB
D
Bright LED
5C
5D
5F
Red
Amber
Green
Circuits
5
6
ON
ON
(ON)
ON
( ) = Momentary
Alternate Action
with Latchdown
* Snap-in Mounting
KK
NK
Rectangular with
NBK
Side Barriers
* Standard with Solder
Lug terminals
JC
Clear/Red
JD
Clear/Amber
JF
*JJ
Clear/Green
Clear/Clear
Keylocks
Rotaries
Contacts & Ratings
W
G
Silver Rated 5A
@ 125/250V AC
Gold Rated 0.4VA max
@ 28V AC/DC max
Terminals
Solder Lug*
01
(for Snap-in
Mounting)
03
Straight PC
AB
Square & Rectangular Spot Illumi-
nated Black Cap with White Window
* Not available with Rectangular cap
Super Bright LED
6B
6F
6G
White
Green
Blue
JB
AB
Full Face Illuminated Cap
for Super Bright LED
Clear Lens/White Diffuser
Spot Illuminated Black Cap
with White Window
Slides
Tactiles
*
Wire harness & cable assemblies
offered only in Americas
Available with
Square only
Nonilluminated
N
Nonilluminated
For Square only; see cap detail page
IMPORTANT:
Switches are supplied without UL,
cULus & CSA marking unless specified.
UL, cULus & CSA recognized only when
ordered with marking on the switch.
Specific models, ratings, & ordering in-
structions are noted on General Specifi-
cations page.
Tilt
Nonilluminated Cap Colors
A
B
C
Black
White
Red
E
F
G
Yellow
Green
Blue
Touch
Indicators
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
UB15SKG035C-CC
Accessories
Gold Contacts with
0.4VA Rating
Square
with PCB Mounting
Red, Bright LED & Red Lens
with Red Diffuser
SPDT ON-(ON) Circuit
Straight PC Terminals
Supplement
D80
www.nkk.com
Low Profile Pushbuttons
POLES & CIRCUITS
Plunger Position
( ) = Momentary
Pole
Model
UB15
*UB16
UB25
*UB26
Normal
Down
Connected Terminals
Normal
Down
Notes:
Series UB
Throw & Switch/Lamp Schematics
Switch is marked with NC, NO, COM, L+ & L–.
Lamp circuit is isolated and requires an external
power source.
1
COM
(+)
(-)
SP
ON
ON
ON
ON
(ON)
ON
(ON)
ON
1-3
1-2
SPDT
1
3
3
COM
NC
2
NO
4
COM
(+)
(-)
NC 2
NO
6
NC
5
NO
* When in latchdown position for the alternate circuit, cap position is .039” (1.0mm) above the housing.
D
MOUNTING TYPES & SHAPES
PCB Mounting
SK
3
6
3
L+
3
6
3
L+
2
L-
1
L+
2
L+
2
(10.16)
.400
(1.2) Dia Typ
.047
5
L-
4
(10.16)
.400
(1.2) Dia Typ
.047
C
L
L-
1
(10.16)
.400
(1.2) Dia Typ
.047
5
L-
4
2
1
(10.16)
.400
(1.2) Dia Typ
.047
1
Single Pole
Double Pole
Snap-in Mounting (Solder Lug)
Single Pole
Double Pole
KK
Square
with Built-in Bezel
NK
Rectangular
with Built-in Bezel
NBK
Rectangular with Built-in
Side Barriers
(16.2)
.638
(16.2) Sq
.638
(22.4)
.882
CONTACT MATERIALS & RATINGS
Silver Contacts
Power Level
5A @ 125V AC & 250V AC
Touch
W
G
Gold Contacts
Logic Level
0.4VA maximum @ 28V AC/DC maximum
Complete explanation of operating range in Supplement section.
01
Solder Lug
(1.6)
.063
(0.2)
.008
(5.0)
.197
03
Straight PC
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D81
Supplement
(2.0)
.079
(0.8)
.032
Thk = (0.5)
.020
(0.2)
.008
(4.0)
.157
(1.0)
.039
Thk = (0.5)
.020
Accessories
TERMINALS
Indicators
Tilt
Snap-in Mounting with Solder Lug terminals is the standard combination. Panel Thickness: .039 ~ .126” (1.0 ~ 3.2mm)
Tactiles
Slides
Rotaries
C
L
C
L
C
L
Keylocks
Square
(5.08)
.200
(2.54) Typ
.100
(5.08) Typ
.200
(2.54) Typ
.100
RK
Rectangular
(7.62)
.300
(2.54) Typ
.100
(7.62) Typ
.300
(2.54) Typ
.100
Programmable
Illuminated PB
DP
1-3 4-6
1-2 4-5
DPDT
Pushbuttons
Rockers
Toggles
Series UB
Toggles
Low Profile Pushbuttons
LED COLORS & SPECIFICATIONS
Rockers
The electrical specifications shown are determined at a basic temperature of 25°C. LED circuit is isolated and requires external power
source. Polarity marks are on bottom of switch. If the source voltage exceeds the rated voltage, a ballast resistor is required. Resistor
value can be calculated by using the formula in the Supplement section. LED is an integral part of switch and not available separately.
Super Bright LEDs are
Electrostatic Sensitive
(+)
(-)
ELECTROSTATIC
SENSITIVE DEVICES
ATTENTION
Bright
Super Bright
Pushbuttons
5C
Red
30
20
1.85
5
0.40
5D
Amber
30
20
2.0
5
0.42
–25° ~ +50°C
5F
Green
25
20
2.1
5
0.46
6B
White
30
20
3.2
5
0.40
6F
Green
30
20
3.2
5
0.40
–25° ~ +50°C
6G
Blue
30
20
3.2
5
.040
Unit
mA
mA
V
V
mA/°C
Color
I
FM
I
F
V
F
V
RM
∆I
F
Forward Peak Current
Typical Forward Current
Forward Voltage
Reverse Peak Voltage
Current Reduction Rate Above 25°C
Ambient Temperature Range
Programmable
Illuminated PB
D
N
No Lamp
Keylocks
CAP TYPES & COLOR COMBINATIONS
Full Face Illuminated Cap for Bright LED
Lens/Diffuser
Colors Available for Square Cap:
Lens/Diffuser
Colors Available for Rectangular Cap:
AT4074
Lens
(12.0) Sq
.472
(3.0)
.118
Rotaries
CB
CC
DD
DJ
FB
FF
FJ
JB
JC
JD
JF
JJ
CB
CC
DB
DD
FB
FF
JB
JC
JD
JF
AT4117
Lens
(12.0)
.472
(3.0)
.118
(17.0)
.669
Slides
CJ
DB
AT4075
Diffuser
(0.5)
.020
(10.35) Sq
.407
AT4118
Diffuser
(10.35)
.407
(0.5)
.020
(15.35)
.604
Tactiles
Lens & Diffuser Material: Polycarbonate
Lens Finish: Glossy
Diffuser Finish: Textured
(1.9)
.075
(3.1)
.122
(3.0)
.118
Spot Illuminated Caps for Bright & Super Bright LEDs
Cap/Window Colors Available:
AT4119 Square
for Bright and
Super Bright LED
(1.9)
.075
(5.0)
.197
(12.0) Sq
.472
AB
Black Cap with Translucent
White Window for LED Display
Material: Polycarbonate
AT4120
Rectangular
for Bright LED
Tilt
(5.0)
.197
(12.0)
.472
(17.0)
.669
(3.1)
.122
(3.0)
.118
Finish: Matte
Touch
Lens/Diffuser
Colors Available for Square Cap:
Full Face Illuminated Cap for Super Bright LED
Rectangular lens & diffuser are not
available for combining with super
bright LED.
Lens Finish: Glossy
Diffuser Finish: Textured
Opaque Caps for Nonilluminated
AT4073
Square
AT4116
Rectangular
(12.0)
.472
(3.0)
.118
(17.0)
.669
Indicators
JB
AT4074 Lens & AT4075 Diffuser
(Dimensions above)
Lens & Diffuser Material: Polycarbonate
Accessories
Cap Colors Available:
A
B
C
E
F
G
Material: Polycarbonate
Finish: Glossy
A
Black
B
White
Supplement
(3.0)
.118
(12.0) Sq
.472
Color Codes:
D82
C
Red
D
Amber
E
Yellow
F
Green
G
Blue
J
Clear
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