Purdy AND156SYP - Manual (Page 2)

AND156SYP
AS A
lGaInP Super Yellow Light Emission
Ultra Bright LED Lamps
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408.523.8200 • Fax: 408.733.1287 • [email protected] • www.purdyelectronics.com 1 1/11/09
Radiation Characteristics
0 10
20
30
40
50
60
70
80
90
0 0.5
Relative Intensity vs. Wavelength
500 550 600 650 700
0.2
0.4
0.6
0.8
1.0
Wavelength (nm)
Relative Intensity
Forward Current vs. Forward Voltage
1.0 1.5 2.0 2.5 3.0 3.5
10
20
30
40
50
Forward Voltage (V)
Forward Current (mA)
Forward Current vs. Relative Intensity
0 10 20 30 40 50
0.5
1.0
1.5
2.0
2.5
Forward Current (mA)
Relative Luminous Intensity (%)
Forward Current vs. Ambient Temp.
0 20 40 60 80 100
10
20
30
40
50
Relative Intensity
Relative Intensity vs. Ambient Temp.
25 35 45 55 65
0.0
0.5
1.0
1.5
2.0
Ambient Temperature Ta (ºC)
Relative Luminous Intensity (%)
0.0
30 40 50 60 70
Radiation Angle
1.0
0
0.5
1.0
Forward Current (mA)
Ambient Temperature Ta (ºC)
0
0
0.0
When the LEDs are connected using serial circuit,
if either one of the LEDs does not light up, then
current will not flow causing the other LEDs to not
light up. In the new design, the LEDs are in parallel
with the zener diodes. If either one of the LEDs
does not light up, current can still flow through
causing the others to light up.