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L-7113MBDL-5V | Kingbright LED with resistor 430 nm Blue T-1 3/4 6 V | Distrelec Switzerland
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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
1.8mm 2.1V Standard Water Clear Blue LED Resistor Required | Railwayscenics
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Super Bright Blue 5mm LED (25 pack) : ID 301 : $8.00 : Adafruit Industries, Unique & fun DIY electronics and kits
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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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UW-Madison MRSEC
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