Ultrabright yellow LEDs in a ("standard size") 5 mm package with milky-white diffused lenses. This LED is similar to our other 5 mm LEDs except it has an internal chip that varies the brightness randomly, giving the LED a "flickering" look. Watch it flicker in the dark! Specifications: Color: Yellow Peak Wavelength: 619 nm Package: Round 5 mm (T-1 3/4) Lens type: Milky-white Viewing angle: 60 degrees Intensity: 320 mCd typ. at 20 mA DC forward current: 30 mA Forward voltage (typical): 2.10 V Lead-free (RoHS compliant) Tip: Use with 150ohm resistor 1/8 watt when powering with 4 AA or 4 AAA battery pack. Use 33 ohm 1/8 watt resistor when powering with 2 AA or 2 AAA battery pack.