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SPEC NO: DSAF2537 REV NO: V.5B DATE: MAR/21/2013 PAGE: 2 OF 6
APPROVED: WYNEC CHECKED: Allen Liu DRAWN: Q.M.Chen ERP: 1101004480
Selection Guide
Notes:
1. ?/2 is the angle from optical centerline where the luminous intensity is 1/2 of the optical peak value.
2. Luminous intensity/ luminous Flux: +/-15%.
3. Luminous intensity value is traceable to the CIE127-2007 compliant national standards. 
Absolute Maximum Ratings at TA=25癈
Electrical / Optical Characteristics at TA=25癈
Notes:
1.Wavelength: +/-1nm.
2. Forward Voltage: +/-0.1V.
3. Wavelength value is traceable to the CIE127-2007 compliant national standards. 
Notes:
1. 1/10 Duty Cycle, 0.1ms Pulse Width.
2. 2mm below package base.
3. 5mm below package base.
Part No.
Dice
Lens Type
iewing
Angle [1]
Min.
Typ.
2?/2
WP424YDT
Yellow (GaAsP/GaP)
Yellow Diffused
1.2
3
100?/SPAN>
Iv (mcd) [2]
@ 10mA
Symbol
Parameter
Device
Typ.
Max.
Units
Test Conditions
籶eak
Peak Wavelength
Yellow
590
 
nm
IF=20mA
籇 [1]
Dominant Wavelength
Yellow
588
 
nm
IF=20mA
敾1/2
Spectral Line Half-width
Yellow
35
 
nm
IF=20mA
C
Capacitance
Yellow
20
 
pF
VF=0V;f=1MHz
VF [2]
Forward Voltage
Yellow
2.1
2.5
V
IF=20mA
IR
Reverse Current
Yellow
 
10
uA
VR = 5V
Parameter
Yellow
Units
Power dissipation
75
mW
DC Forward Current
30
mA
Peak Forward Current [1]
140
mA
Reverse Voltage
5
V
Operating/Storage Temperature
-40癈 To +85癈
Lead Solder Temperature [2]
260癈 For 3 Seconds
Lead Solder Temperature [3]
260癈 For 5 Seconds
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