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CN-0250-2
Change Notice
NP01 Series Illuminated Pushbuttons
Change of Single Color LED Specifications
Type of Change:
Engineering
Product
Part Number
Appearance
The NP01 Series Illuminated Pushbuttons will have changes to the single color
LEDs. The change will effect all single color models, both standard and custom.
Differences in the LED specification values are outlined in the following table.
NP01 Pushbutton
Electrical Specifications for NP01 Single Color LED
Electrical specifications are determined
at a basic temperature of 25°C.
Before Change
After Change
C
D
F
C
D
F
Color
Red
Amber
Green
Red
Amber
Green
Maximum Forward Current
IFM
50mA
50mA
30mA
30mA
30mA
25mA
Typical Forward Current
IF
20mA
20mA
20mA
20mA
20mA
16mA
Forward Voltage
VF
2.0V
2.1V
3.5V
1.95V
2.0V
3.3V
Maximum Reverse Voltage
VRM
5V
5V
5V
5V
5V
5V
Current Reduction Rate
∆IF
0.88mA/°C
above 40°C
0.88mA/°C
above 40°C
0.48mA/°C
above 30°C
0.41mA/°C
above 25°C
0.38mA/°C
above 25°C
0.33mA/°C
above 25°C
ATTENTION
ELECTROSTATIC
SENSITIVE DEVICES
Ambient Temperature Range
–25° ~ +50°C
LC1
(+)
Red or Green LEDs
–25° ~ +50°C
L2 (-)
L1 (-)
Notes
• 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
required. The resistor value can be calculated by using the formula
shown here.
• The changes to single color LEDs do not affect any external dimensions
of the switches.
• Contact the factory if further details are needed.
L4 (-)
LC2
(+)
Amber LED
L3 (-)
L2 (-)
LC1
(+)
R
+
L1 (-)
IF
Anode
VF
E
–
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 Single LED Specification Changes
NP0115AG03LC-JB
NP0115AG03LD-JD
NP0115HG03LC-JB
NP0115HG03LD-JD
NP0115AG03LC-JC
NP0115AG03LF-JB
NP0115HG03LC-JC
NP0115HG03LF-JB
NP0115AG03LD-JB
NP0115AG03LF-JF
NP0115HG03LD-JB
NP0115HG03LF-JF
Effective Date
Changes to Single Color LEDs will be effective October 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
2015/10/21 Engineering Department
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