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Blue light LED works without any resistor and doesn't burn out. Why? - Electrical Engineering Stack Exchange
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Amazon.com: EDGELEC 100pcs 5mm Blue Lights LED Diodes (Blue Lens) Diffused Round Lens 29mm Long Lead (DC 3V) +100pcs Resistors (for DC 6-12V) Included,Bulb Lamps Light Emitting Diode : Industrial & Scientific
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Amazon.com: Lighthouse LEDs 12v 5mm Round Top Clear Lens LED - Blue LED - Ultra Bright - Built in/Internal Resistor - 5v, 6v, 7v, 8v, 9v, 10v, 11v, 13v, 14v, 15v (Pack
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