RF short-travel keyswitches
Specifications LED
3 mm LED
(valid for 25 °C)
Red LED
Green LED
Yellow LED
Max. forward current l
F
:
Current reduction from: T
0
= 50 °C:
Wavelength typ:
Forward voltage U
F
/l
F
typ:
Reverse voltage U
R
/l
F
typ:
Ambient temperature, operating:
Max. forward current l
F
:
Current reduction from: T
0
= 50 °C:
Wavelength typ:
Forward voltage U
F
/l
F
typ:
Reverse voltage U
R
/l
F
typ:
Ambient temperature, operating:
30 mA
approx 0.5 mA/°C
635 nm
2 V/10 mA
5 V/100 µA min.
- 20 °C . . . + 80 °C
Blue LED
30 mA
approx 0.5 mA/°C
565 nm
2 V/10 mA
5 V/100 µA min.
- 20 °C . . . + 80 °C
Red low-current LED
20 mA
approx 0.2 mA/°C
586 nm
2 V/10 mA
5 V/100 µA min.
- 20 °C . . . + 80 °C
20 mA
approx 0.6 mA/°C
470 nm
2.7 V/10 mA
5V/100 µA min.
- 20 °C . . . + 80 °C
30 mA
approx 0.5 mA/°C
645 nm
1.6 V/1 mA
5 V/100 µA min.
- 20 °C . . . + 80 °C
2 mm LED
(valid for 25 °C)
Red LED
Green LED
Green LED superbright
Max. forward current l
F
:
Current reduction from: T
0
= 50 °C:
Light current f
V
/l
F
typ:
Wavelength typ:
Forward voltage U
F
/l
F
typ:
Reverse voltage U
R
/l
F
typ:
Ambient temperature, operating:
Max. forward current l
F
:
Current reduction from: T
0
= 50 °C:
Light current f
V
/l
F
typ:
Wavelength typ:
Forward voltage U
F
/l
F
typ:
Reverse voltage U
R
/l
F
typ:
Ambient temperature, operating:
Max. forward current l
F
:
Current reduction from: T
0
= 50 °C:
Light current f
V
/l
F
typ:
Wavelength typ:
Forward voltage U
F
/l
F
typ:
Reverse voltage U
R
/l
F
typ:
Ambient temperature, operating:
30 mA
0.5 mA/°C
-
637 nm
1.8 V/20 mA
5 V/100 µA min.
- 55 °C . . . + 100 °C
Yellow LED
30 mA
0.5 mA/°C
-
569 nm
2.1 V/10 mA
5 V/100 µA min.
- 40 °C . . . + 100 °C
White LED
30 mA
-
-
510-545 nm
3.5 V/20 mA
-
-30 °C . . . + 100 °C
Blue LED
4
50 mA
0.8 mA/°C
250 mIm/20 mA
590 nm
1.9 V/20 mA
5 V/100 µA min.
-40 °C . . . + 100 °C
Multi-colour LED
25 mA
-
-
-
3.6 V/20 mA
-
- 20 °C . . . + 80 °C
30 mA
-
-
464-485 nm
3.6 V/20 mA
- 20 °C . . . + 80 °C
RF
30 mA
approx 0.6 mA/°C
-
635/565 nm
2 V/10 mA
-
- 20 °C . . . + 80 °C
Calculating the
series resistor:
R
V
=
U
B
- U
F
I
F
Rated power
of series:
P
V
= I
F2
x R
V
Example for 5 Volt:
R
V
=
5V - 2.0 V
= 150
Ω
(= standard value)
0.02 A
PCB Keyswitches
4 - 25
CK-COMPONENTS [ C&K COMPONENTS ]
