Membranes
DISTINCTIVE CHARACTERISTICS
• Nonilluminated options in 4 or 16 keys, illuminated choices in 12 or 16 keys
• 1.0mm (.039”) tail pitch
• Easily integrated into designs: replaces multiple mechanical switches, soldered
wires and cable assemblies
• Card insertion into design supports customized legends for nonilluminated models
• Actuating dome offers crisp, tactile feedback to positively indicate circuit transfer
• Illuminated models feature legends on embossed keypads
• Adhesive backing for easy mounting
Series FM
Toggles
R
GENERAL SPECIFICATIONS
Power Level
Contact Resistance
Insulation Resistance
Dielectric Strength
Operational Life
Contact Timing
Nominal Operating Force
Stroke:
Nonilluminated
Illuminated with Overlay
Operating Temperature Range
20mA @ 24V DC
500Ω maximum (10mA @ 10V DC)
100 megohms minimum @ 250V DC minimum
250V AC minimum for one minute minimum
1,000,000 operations minimum
10 milliseconds maximum
1.0N ~ 6.0N
.016” ~ .039” (0.4mm ~ 1.0mm)
.020” ~ .047” (0.5mm ~ 1.2mm)
–15°C ~ +50°C (+5°F ~ +122°F) illuminated
–15°C ~ +55°C (+5°F ~ +131°F) nonilluminated
LED SPECIFICATIONS
Forward Voltage (Typical)
Forward Current (Typical)
Forward Current (Maximum)
* Forward Peak Current (Max)
Reverse Voltage (Maximum)
V
F
I
F
I
F
I
FM
V
R
2.1
20
30
195
5.0
V
mA
mA
mA
V
The electrical specifications
shown are determined at a
basic temperature of 25°C.
LED is an integral part of
the switch. LEDs are not
sold separately.
+
I
F
Anode
E
V
F
R =
Where: R =
E =
V
F
=
Cathode
I
F
=
E – V
F
I
F
Resistor Value (Ohms)
Source Voltage (V)
Forward Voltage (V)
Forward Current (A)
–
LED circuits are isolated and require an external power source.
If the source voltage exceeds the rated voltage, a ballast resistor is required.
Ordering Information
Part Number
FMBN04BD
FMBN04BE
FMBN16BD
FMBN16BE
FMBP12BF
FMBP16BF
Dot Illuminated
with
Overlay
Nonilluminated
Illumination
Number of Keys
4
4
16
16
12
16
Description
Surface Sheet
Black (D)
Gray (E)
Overlay
•
•
•
•
Gray Surface Sheet with
Embossed White Keypad
and Gray Legends
www.nkkswitches.com
L39
6/15/18
Supplement
Accessories
Indicators
Touch
* Note: Pulse width 0.1msec maximum with a maximum duty cycle ratio of 1/10
L
Tilt
Tactiles
Single Element LED Color: Amber
Unit
Slides
Rotaries
Keylocks
Programmable Illuminated PB
Pushbuttons
Rockers
Series FM
Toggles
Membranes
TYPICAL SWITCH DIMENSIONS
Nonilluminated • 4 or 16 Keys
(6.0)
.236
P (1.0)
Typ
.039
(0.7) Typ
.028
Pin 1
(4.0)
.157
Rockers
Switch Circuit Matrix
For 4 Key
(0.5)R Typ
.020
Pin 5
(0.3)
.012
(8.0)
.315
(70.0)
2.756
(1)
(2)
(3)
(4)
1
2
3
4
5
(9.0) Typ
.354
(0.7)
.028
P (1.0) Typ
.039
Pin 1
(4.0)
.157
(18.0)
.709
(0.5) R Typ
.020
Pin 8
(0.3)
.012
(8.0)
.315
(70.0)
2.756
Programmable Illuminated PB
Pushbuttons
1
Key numbers in parenthesis
are not actually on panel
and are for reference only
Switch Circuit Matrix
Detail For 4 or 16 Key
13
14
15
16
2
(93.0)
3.661
9
10
11
12
3
5
6
7
8
Keylocks
4
1
2
3
4
Switch Circuit Matrix
For 16 Key
(36.0)
1.417
(1.2)
.047
(13)
(9)
(5)
(14)
(10)
(6)
(2)
(15)
(11)
(7)
(3)
(16)
(12)
(8)
(4)
8
7
6
5
4
3
2
1
Rotaries
(93.0) Sq
3.661
(1.2)
.047
FMBN04BE
Gray
Surface
Sheet
Tactiles
Slides
(1)
FMBN16BD
Black
Surface
Sheet
Key numbers in parenthesis
are not actually on panel
and are for reference only
Tilt
Insertable Legend Card for 4 Key or 16 Key
L
Touch
(18.0) Sq Typ
.709
(1.0)
.039
Indicators
(82.5)
3.248
(19.0) Typ
.748
(12.75) Typ
.502
(19.0) Typ
.748
(12.75) Typ
.502
Insertable Legend Cards
are supplied with the
nonilluminated switch
keypad assembly in
Black, Gray and Yellow
(19.0) Typ
.748
(18.0) Sq Typ
.709
(82.5) Sq
3.248
Supplement
Accessories
(1.0)
.039
(25.5)
1.004
(12.75) Typ
.502
(0.1) ~ (0.12)
.004 .005
L40
www.nkkswitches.com
Series FM
Toggles
Membranes
INSERTABLE LEGEND CARDS
Instructions for Customizing Insertable Legends
The membrane keypad assembly comes with three insertable legend cards: yellow, gray and black.
The following provides guidelines for creating and insertion of legend cards for the membrane switch
keypad assembly. Read all of the instructions prior to customizing and inserting the legend card.
• Using the borders on the insertable legend card as a guide, be sure characters on the card are
about 1.5mm (.059”) within these borders. This is the printable area.
• Legend characters may be drawn, printed, etc. Be sure that application choice is completely
dry before inserting into membrane keypad assembly.
Instructions for Inserting Legend Card
• Note correct orientation of insertable legend card. Insert card under surface sheet, and use caution
to avoid bending the membrane keypad assembly. Do not use pointed object to insert card, and do
not remove surface sheet.
• Align and center all legend characters within the squares of the surface sheet.
• Smooth any wrinkles or air pockets from surface sheet.
• Peel off adhesive strip from the membrane keypad assembly.
• The legend card is now firmly in place and cannot be removed.
• Detach the protective film.
Connectors
Recommended Connectors for 5 Pin
Straight: FCI Part No. SLW5S-5C7LF
Right Angle: FCI Part No. SLW5R-5C7LF
Border
Printable
Area
(1.5) Typ
.059
Card
(1.5) Typ
.059
Pushbuttons
Rockers
Surface
Sheet
Programmable Illuminated PB
A
B
9
C
6
8
D
5
3
7
4
2
P
1
STO
0
Protective
Film
Surface
Sheet
8
7
Keylocks
1
4
2
5
3
Adhesive Strip
Rotaries
Recommended Connectors for 8 Pin
Straight: FCI Part No. SLW8S-5C7LF
Right Angle: FCI Part No. SLW8R-5C7LF
Slides
PRECAUTIONS FOR HANDLING
• Assembly of legend card insert is handled by the customer. Therefore, we recommend to evaluate the finished product with the
card assembled.
• Nonilluminated products have a loophole on each key. It is possible to add optional illumination by installing appropriate LEDs.
Legend card does not have loopholes.
• To test proper electrical operation of switches, use of an electric buzzer is recommended.
• Use an additional chattering prevention circuit for the switch circuit.
• Do not operate switches with pointed objects (i.e. screwdrivers) to prevent perforation of film overlay.
• Use an FPC connector that corresponds to the printed circuit. Contact factory for suitable connectors.
Tilt
Tactiles
L
• During assembly and installation of legends place devices on a level, sturdy surface. We do not recommend assembly and
installation of device using a free hand or on a soft surface.
• Do not fold, bend, or apply pressure to the product.
• These devices contain adhesive that may emit noise. This does not affect product functionality.
• Do not depress any switch areas during assembly/installation.
• These membrane switches are built with air vents. Prior to installation, make corresponding holes to allow air vents to function.
These holes should first be aligned with the membrane switch device, then made on the body of the final installation structure.
Do not allow water or oil to penetrate through the air vents. Entry of any liquids through the air vents may cause contact failure.
Accessories
Indicators
Touch
APPLICATIONS
• Communication equipment
• Automation equipment
L42
Supplement
• Office machines
• Electronic equipment
www.nkkswitches.com
• Electronic equipment for national security
• Amusement equipment
C
6
B
9
A
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