3mm Discrete LED High Efficiency Diffused 4.70 ±.20 [.185 ±.008] .79 ±.20 [.031 ±.008] 521-94xx TYPE 521-9408 521-9427 521-9428 3.30 [.130] MAX .50 [.020] NOM COLOR Green Red Yellow 2.49 ±.25 [.098 ±.010] 3.09 ±.20 [.122 ±.008] 1.30 ±.25 [.051 ±.010] 1.0 [.040] 24.00 ±.25 [.945 ±.010] 6.10 ±.38 [.240 ±.015] .50 [.020] NOM CATHODE (–) MOUNTING CLIP: 515-0006 located on page 4-65 Dimensions in mm [inches] Green Red Yellow -9408 -9427 -9428 Power Dissipation (mW) 75 60 60 Forward Current (mA) 25 20 20 ABSOLUTE MAXIMUM RATINGS (TA=25°C) Derating (mA/°C) .5 .5 .5 60 60 60 Operating Temperature (°C) -25/+85 -25/+85 -25/+85 Storage Temperature (°C) -30/+100 -30/+100 -30/+100 From 50°C Peak Current (mA) Soldering Temperature 260°C, 5 seconds, 1.6 mm from case Solder Adherence per MIL-STD-202E, Method 208C OPERATING CHARACTERISTICS (TA=25°C) Green Red Yellow -9408 -9427 -9428 Luminous Intensity (mcd) IF=10mA Min. Typical 5.6 16 3.6 10 2.2 6.3 Peak Wavelength (nm) λ Peak Typical 563 650 585 Viewing Angle (2Θ ½) Typical 45° 45° 45° Forward Voltage (V) IF=10mA Typical Max. 2.1 3 2 3 2.1 3 Reverse Voltage (V), IR=10µA Min. 3 3 3 Θ is the off axis angle at which the luminous intensity is half the axial luminous intensity 4-64 Dialight Corporation • 1501 Route 34 South • Farmingdale, NJ 07727 • TEL: (732) 919-3119 • FAX: (732) 751-5778 •www.dialight.com