3mm Discrete LED Bi-Color Non-Tinted, Diffused 521-9478, -9628, -9768 25.40 [1.00] MIN 1.02 [.040] 3.20 [.126] MAX RED CATHODE 521-9768 YELLOW CATHODE 521-9478 GREEN CATHODE 521-9628 3.00 [.118] 2.54 [.100] 4.45 [.175] 5.20 ±.5 [.205 ±.02] .50 [.020] TYP PART NO. COLOR 521-9478 Yellow/Green 521-9628 Red/Green 521-9768 Red/Yellow 2.54 [.100] NOM NOTE: MENISCUS MAY EXTEND 1.0MM [.040] DOWN FROM HOUSING Dimensions in mm [inches] MOUNTING CLIP: 515-0006 located on page 4-65 Yellow/Green Red/Green Red/Yellow ABSOLUTE MAXIMUM RATINGS (TA=25°C) -9478 -9628 -9768 Power Dissipation (mW) 60/100 140/100 100/60 Forward Current (mA) Derating (mA/°C) From 25°C 1 From 50°C 20/30 .251/.401 40/30 .5/.4 30/20 .41/.251 Peak Current (mA) 80/120 200/120 120/80 Operating Temperature (°C) -55/+100 -55/+100 -55/+100 Storage Temperature (°C) -55/+100 -55/+100 -55/+100 Pulse width = 10µs Soldering Temperature 260°C, 5 seconds, 1.66 mm from case Solder Adherence per MIL-STD-202E, Method 208C OPERATING CHARACTERISTICS (TA=25°C) Luminous Intensity (mcd) Min. IF=10mA * IF=20mA Typical Yellow/Green Red/Green Red/Yellow -9478 -9628 -9768 2.5/2.5 4.3/6.3 3.7*/1.1* 12.6*/3.7* 1.7*/1.7* 5.6*/5.6* Peak Wavelength (nm) λ Peak Typical 585/565 660/565 630/585 Viewing Angle (2Θ ½) Typical 80° 200° 80° Forward Voltage (V) IF=20mA Typical Max. 2.1/2.1 2.8/2.8 1.8/2.1 2.4/2.8 2/2.1 2.8/2.8 5 5 5 Reverse Voltage (V) IR=100ua Min. Θ is the off axis angle at which the luminous intensity is half the axial luminous intensity 4-62 Dialight Corporation • 1501 Route 34 South • Farmingdale, NJ 07727 • TEL: (732) 919-3119 • FAX: (732) 751-5778 •www.dialight.com