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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
GENERAL SPECIFICATIONS
Series FM
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
500? 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
Single Element LED Color: Amber
Forward Voltage ( Typical) V F
Forward Current (Typical) I F
Forward Current (Maximum) I F
2.1
20
30
Unit
V
mA
mA
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.
E
R
+
–
I F
V F
Anode
Cathode
R =
Where: R =
E =
V F =
I F =
E – V F
I F
Resistor Value (Ohms)
Source Voltage (V)
Forward Voltage (V)
Forward Current (A)
* Forward Peak Current (Max)
I FM
195
mA
LED circuits are isolated and require an external power source.
V R
Reverse Voltage (Maximum)         5.0    V     If the source voltage exceeds the rated voltage, a ballast resistor is required.
* Note: Pulse width 0.1msec maximum with a maximum duty cycle ratio of 1/10
L
Ordering Information
Description
Part Number
FMBN04BD
Illumination
Number of Keys
4
Surface Sheet
Black (D) Gray (E)
?
Overlay
FMBN04BE
FMBN16BD
FMBN16BE
FMBP12BF
FMBP16BF
Nonilluminated
Dot Illuminated
with
Overlay
4
16
16
12
16
?
?
?
Gray Surface Sheet with
Embossed White Keypad
and Gray Legends
www.nkk.com
L15
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