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CN-0250-1
Change Notice
NP01 Series Illuminated Pushbuttons
Change of Bicolor LED Specifications
Type of Change:
Engineering
Product
Part Number
Appearance
The NP01 Series Illuminated Pushbuttons will have changes to the bicolor LEDs.
The change will effect all bicolor models, both standard and custom. Differences
in the LED specification values are outlined in the following table.
NP01 Pushbutton
Electrical Specifications for NP01 Bicolor LED
Electrical specifications are determined
at a basic temperature of 25°C.
Before Change
After Change
CF
CF
ATTENTION
ELECTROSTATIC
SENSITIVE DEVICES
Red/Green Bicolor LED
Color
Red
Green
Red
Green
Maximum Forward Current
IFM
50mA (20)
30mA (20)
30mA (25)
25mA (25)
Typical Forward Current
IF
20mA (15)
20mA (7.5)
20mA (20)
16mA (5)
Typical Forward Current for
Alternating Legends
IF
30mA
25mA
20mA
16mA
Forward Voltage
VF
2.0V
3.5V
1.95V
3.3V
Maximum Reverse Voltage
VRM
5V
5V
5V
5V
Current Reduction Rate
∆IF
0.88mA/°C
above 40°C
0.48mA/°C
above 30°C
0.40mA/°C
above 25°C
0.33mA/°C
above 25°C
Ambient Temperature Range
–25° ~ +50°C
L4 (-)
Green
LC2
(+)
L3 (-)
Red
L2 (-)
Red
LC1
(+)
L1 (-)
Green
–25° ~ +50°C
Notes
• Specifications in ( ) in table above denote simultanious illumination of Red and Green.
• LEDs are an integral part of the switch and are not available separately.
• If the source voltage exceeds the rated voltage, a ballast resistor is
R
+
required. The resistor value can be calculated by using the formula
shown here.
E
• The changes to bicolor LEDs do not affect any external dimensions
of the switches.
–
• Contact the factory if further details are needed.
IF
Anode
VF
R =
Where: R =
E =
VF =
Cathode
IF =
E – VF
IF
Resistor Value (Ohms)
Source Voltage (V)
Forward Voltage (V)
Forward Current (A)
NP01 Part Numbers Effected by Bicolor LED Specification Changes
NP0115AG03LCF-JB
NP0115AG03LCF-J01
NP0115AG03LCF-J02
NP0115AG03LCF-J03
NP0115HG03LCF-JB
NP0115HG03LCF-J01
NP0115HG03LCF-J02
NP0115HG03LCF-J03
Effective Date
Changes to Bicolor LEDs will be effective April 2015.
http://www.nkkswitches.com • 1.877.2BUYNKK (228.9655)
7850 East Gelding Drive • Scottsdale, AZ 85260 • Telephone 480.991.0942 • Fax 480.998.1435
2015/04/06 Engineering Department
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