2mm x 4mm Discrete LED Rectangular - Bi-Color Non-Tinted, Diffused 521-9640, -9743 2.03 [.080] 7.01 [.276] 1.50 [.059] GREEN CATHODE 3.99 [.157] PART NO. COLOR 521-9640 Yellow/Green 521-9743 Red/Green 2.54 [.100] 25.4 [1.00] .609 [.024] Dimensions in mm [inches] Yellow/Green Red/Green ABSOLUTE MAXIMUM RATINGS (TA=25°C) -9640 -9743 Power Dissipation (mW) 60/100 100/100 Forward Current (mA) Derating (mA/°C) From 50°C 20/30 .25/.4 30/30 .4/.4 Peak Current (mA) 80/120 120/120 Operating Temperature (°C) -55/+100 -55/+100 Storage Temperature (°C) -55/+100 -55/+100 Pulse width = 100 µs Soldering Temperature 5 260°C, 5 seconds, 1.6 mm from case Solder Adherence per MIL-STD-202E, Method 208C OPERATING CHARACTERISTICS (TA=25°C) Yellow/Green Red/Green -9640 -9743 Luminous Intensity (mcd) IF=20mA Min. Typical .7/1.1 2.5/3.7 1.7/1.7 5.6/5.6 Peak Wavelength (nm) λ Peak Typical 585/565 630/565 Viewing Angle (2Θ ½) Typical 140° 140° Forward Voltage (V) IF=20mA Typical Max. 2.1/2.1 2.8/2.8 2/2.1 2.8/2.8 Θ is the off axis angle at which the luminous intensity is half the axial luminous intensity Dialight Corporation • 1501 Route 34 South • Farmingdale, NJ 07727 • TEL: (732) 919-3119 • FAX: (732) 751-5778 •www.dialight.com 5-15