Datasheet

PCB Keyswitches 4 - 41
4
RF
RF - Short-travel keyswitches
Specifications LED
3 mm LED
2 mm LED (full illumination of RF 15/19)
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:
(valid for 25 °C)
30 mA
approx 0.5 mA/°C
635 nm
2 V/10 mA
5 V/100 μA min.
- 20 °C . . . + 80 °C
Red LED
30 mA
approx 0.5 mA/°C
565 nm
2 V/10 mA
5 V/100 μA min.
- 20 °C . . . + 80 °C
Green LED
20 mA
approx 0.2 mA/°C
586 nm
2 V/10 mA
5 V/100 μA min.
- 20 °C . . . + 80 °C
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:
20 mA
approx 0.6 mA/°C
470 nm
2.7 V/10 mA
5V/100 μA min.
- 20 °C . . . + 80 °C
Blue LED
25 mA
-
-
3.6 V/20 mA
-
- 20 °C . . . + 80 °C
White LED
30 mA
-
510-545 nm
3.5 V/20 mA
-
-30 °C . . . + 100 °C
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:
(valid for 25 °C)
30 mA
0.5 mA/°C
-
637 nm
1.8 V/20 mA
5 V/100 μA min.
- 55 °C . . . + 100 °C
Red LED
30 mA
0.5 mA/°C
-
569 nm
2.1 V/10 mA
5 V/100 μA min.
- 40 °C . . . + 100 °C
Green LED
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
Yellow LED
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
-
-
464-485 nm
3.6 V/20 mA
- 20 °C . . . + 80 °C
Blue LED
30 mA
approx 0.6 mA/°C
-
635/565 nm
2 V/10 mA
-
- 20 °C . . . + 80 °C
Multi-colour LED
Rated power
of series:
P
V
= I
F
2
x R
V
Calculating the
series resistor:
R
V
=
Example for 5 Volt:
R
V
= = 150 Ω (= standard value)
U
B
- U
F
I
F
5V - 2,0 V
0,02 A