Process Sealed Subminiature Pushbuttons
Series AB
Distinctive Characteristics
Subminiature size (1/3 size of Series M switches) saves space on
PC boards.
Specifically developed for logic-level applications.
Totally sealed body construction prevents contact
contamination and allows time- and money-saving
automated soldering and cleaning.
Award-winning STC contact mechanism with
benefits unavailable in conventional mecha-
nisms: smoother, positive detent actuation,
increased contact stability and unparalleled
logic-level reliability. (Additional STC details
in Terms & Acronyms; see Supplement section.)
Molded-in, epoxy sealed or ultrasonically
welded terminals lock out flux, solvents, and
other contaminants.
.100” x .100” (2.54mm x 2.54mm) terminal spacing
conforms to standard PC board grid spacing.
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
Process Sealed Subminiature Pushbuttons
Series AB
General Specifications
Electrical Capacity (Resistive Load)
Logic Level:
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:
Insulation Resistance:
Dielectric Strength:
Mechanical Life:
Electrical Life:
Nominal Operating Force:
Contact Timing:
Travel:
50 milliohms maximum
500 megohms minimum @ 500V DC
500V AC minimum for 1 minute minimum
50,000 operations minimum
50,000 operations minimum
2.55N
Nonshorting (break-before-make)
Pretravel .028” (0.7mm); Overtravel .016” (0.4mm); Total Travel .043” (1.1mm)
Materials & Finishes
Plunger:
Case Housing:
Support Bracket:
Movable Contact:
Stationary Contacts:
Terminals:
Polyacetal
Glass fiber reinforced polyamide
Tin plated phosphor bronze
Phosphor bronze with gold plating
Brass with gold plating
Brass with gold plating
Environmental Data
Operating Temp Range:
Humidity:
Vibration:
Shock:
–30°C through +85°C (–22°F through +185°F)
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)
Installation
Cap Installation Force:
49.03N (11.2 lbf) maximum downward force on actuator
PCB Processing
Soldering:
Cleaning:
Wave Soldering Recommended: See Profile A in Supplement section.
Manual Soldering: See Profile B in Supplement section.
Automated cleaning. See Cleaning specifications in Supplement section.
Standards & Certifications
UL Recognition
or CSA Certification:
The AB Series pushbuttons have not been tested for UL recognition or CSA certification.
These switches are designed for use in a low-voltage, low-current, logic-level circuit.
When used as intended in a logic-level circuit, the results do not produce hazardous energy.
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
Process Sealed Subminiature Pushbuttons
TYPICAL SWITCH ORDERING EXAMPLE
Series AB
H
A
AB
POLES
1
2
SPST
SPDT
DPDT
2
5
A
P
PC TERMINALS
P
B
B1
H
V
V1
(ON)
(ON)
Straight
Straight with Bracket
Straight with Inline Bracket (SP only)
Right Angle with Bracket
Vertical with Bracket
Vertical with Inline Bracket (SP only)
CIRCUITS
1
5
OFF
ON
( ) = Momentary
PLUNGERS
A
*B
*C
.213” (5.4mm) Long
.183” (4.65mm) Long
.080” (2.03mm) Long
(cannot be used with cap)
F
H
CAPS
.201” (5.1mm) Diameter
.295” (7.5mm) Diameter
* Available in single pole only
CAP COLORS
A
B
C
Black
White
Red
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
AB25AP-HA
.213” (5.4mm) Long White Plunger
Black .295” (7.5mm) Diameter Cap
DPDT
Straight PC Terminals
ON-(ON) Circuit
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
Process Sealed Subminiature Pushbuttons
POLES & CIRCUITS
Plunger Position
( ) = Momentary
Normal
Pole
SP
SP
DP
Model
AB11
AB15
AB25
OFF
ON
ON
(ON)
(ON)
(ON)
OPEN
2-3
2-3 5-6
3-1
2-1
2-1 5-4
SPST
SPDT
DPDT
Down
Connected Terminals
Normal
Down
Note:
Series AB
Throw & Schematics
Terminal numbers are not
actually on the switch.
INTERNAL
CONNECTION
1
3
2 (COM)
1
2
1
(COM)
3
4
3
5
6
PLUNGERS
A
.213” (5.4mm)
Long
(2.8) Dia
.110
B
(5.4)
.213
.183” (4.6mm)
Long
(on SP only)
(2.8) Dia
.110
(4.6)
.183
C
.080” (2.03mm)
Long
(on SP only)
(2.8) Dia
.110
(2.03)
.080
Standard Plunger Color:
White
Contact factory for red or black options.
PC TERMINALS
P
Straight
B
Straight
with Bracket
(10.16)
.400
(5.08)
.200
(5.08)
.200
(0.3) Typ
.012
H
Right Angle
with Bracket
(2.54) Typ
.100
(2.54) Typ
.100 (0.6) Dia Typ
.024
V
Vertical
with Bracket
(5.08)
.200
(0.6) Dia Typ
.024
(0.5) Typ
.020
(5.08) Typ
.200
(0.8)
.031
(2.54) Typ
.100
(0.6) Dia Typ
.024
(2.54) Typ
.100
(0.6) Dia Typ
.024
(0.7) Typ
.028
(5.08)
.200 (0.3)
.012 (0.7)
.028
(0.5)
.020
(8.8)
.346
(9.0)
.354
(2.54) Typ
.100
(5.08)
.200
(0.3)
.012
(0.7)
.028
(9.0)
.354
(8.8)
.346
(9.0)
.354
(8.8)
.346
(9.0)
.354
(8.8)
.346
Use of a support bracket is recommended to increase PCB mounting strength and stability.
B1 & V1 terminal dimensions appear on the pushbutton drawings which follow.
SLIP-ON CAPS
F
AT475
.201” (5.1mm) Diameter Cap
(5.1) Dia
.201
(6.3) (5.4)
.248 .213
(2.8) Dia
.110
H
AT496
.295” (7.5mm) Diameter Cap
(7.5) Dia
.295
(6.3) (5.4)
.248 .213
(2.8) Dia
.110
(4.0)
.157
Material: Polyamide
For use with
plungers A & B only.
(4.0)
.157
Material: Polyamide
For use with
plungers A & B only.
Colors Available:
A
Black
B
White
C
Red
03-07
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
Process Sealed Subminiature Pushbuttons
TYPICAL SWITCH DIMENSIONS
Straight PC
(5.0)
.197
(6.0)
.236
Slot
(5.84)
.230
(0.3)
.012
(2.8) Dia
.110
(5.4)
.213
(6.3)
.248
(0.5)
.020
(13.1)
.516
(2.54) Typ
.100
(3.1)
.122
(0.4) Typ
.016
Series AB
Single Pole
(4.0)
(5.1) Dia .157
.201
(4.5)
.177
(0.6) Dia Typ
.024
1
COM
2
3
1
(1.0)
.039
(2.54) Typ
.100
(0.8) Dia Typ
.031
(9.8)
.386
(1.0)
.039
(5.08)
.200
2
3
C
L
C
L
AB15AP-FA
AB11 model does not have terminal 2.
Straight PC
(5.0)
.197
(6.0)
.236
Slot
(9.2)
.362
(0.4)
.016
(2.8) Dia
.110
(0.4) Typ
.016
Double Pole
(4.0)
.157
(3.5)
.138
(0.6) Dia Typ
.024
1
COM
2
3
4
5
6
4
1
2
3
(5.1) Dia
.201
(5.08)
.200
(9.8)
.386
5
6
(5.4)
.213
(6.3)
.248
(0.8)
.031
(13.1)
.516
(2.54) Typ
.100
(3.1)
.122
(2.54) Typ
.100
(0.8) Dia Typ
.031
(5.08)
.200
AB25AP-FA
Straight PC • Bracket
(5.0)
.197
(6.0)
.236
Slot
(5.84)
.230
(0.3)
.012
(2.8) Dia
.110
(5.4)
.213
(6.3)
.248
(5.1) Dia
.201
(4.0)
.157
(4.5)
.177
Single Pole
(0.6) Dia Typ
.024
(2.54) Typ
.100
(10.16)
.400
(0.5)
.020
(13.1)
.516
(0.3) Typ
.012
(3.1)
.122
(0.7)
.028
1
COM
2
3
1
(1.0)
.039
(2.54) Typ
.100
(0.8) Dia Typ
.031
(2.54)
.100
1
2
3
(1.0)
.039
(9.8)
.386
(1.0)
.039
(2.54)
C .100
L
2
3
C
L
(2.54) Typ
.100
(0.8) Dia Typ
.031
C
L
AB15AB-FA
B Terminals
B1 Terminals
Straight PC • Bracket
(5.0)
.197
(6.0)
.236
(0.4)
.016
(9.5)
.374
(2.8) Dia
.110
Double Pole
(4.0)
.157
(3.5)
.138
(5.08)
.200
1
COM
2
3
4
5
6
(5.1) Dia
.201
(0.6) Dia Typ
.024
(2.54) Typ
.100
(10.16)
.400
(0.3) Typ
.012
(3.1)
.122
(9.8)
.386
(0.7) Typ
.028
(5.08)
.200
4
5
6
1
2
3
(2.54) Typ
.100
Slot
(5.4)
.213
(6.3)
.248
(0.8)
.031
(13.1)
.516
(0.8) Dia Typ
.031
AB25AB-FA
Right Angle PC
(6.0)
.236
(5.0)
.197
(0.3) Typ
.012
(5.08)
.200
(0.3)
.012
Single Pole (Single Throw)
(5.1) Dia
.201
(4.0)
.157
Slot
(0.8)
.031
(3.3)
.131
3
1
(6.18)
.243
(5.08)
.200
1
3
(2.8) Dia
.110
(5.08)
.200
(0.8) Dia Typ
.031
AB11AH-FA
(9.8)
.386
(5.4)
(0.7)
.213
.028
(6.3)
.248
(10.8)
(9.38)
.425
.369
(3.1)
.122
(5.08)
.200
(0.6) Dia Typ
.024
(5.08)
.200
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
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