64.56 -- Light-emitting diode (LED)
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Light Emitting Diode (LED), Yellow, 5mm Standard High Quality, Diffuse — Eisco Labs
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Temperature-dependent photoluminescent behavior of millimeter-scale Cs4PbBr6/CsPbBr3 bulk crystals and their application to white light-emitting diodes - ScienceDirect
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64.63 -- NPN transistor switch
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LightEmittingDiodes.org Chapter 1
PARAMETERS, Voltage: DC 2.0V-2.2V, Current: 20 mA, Anode: Longer Leg, Viewing Angle: 30 degree, Wavelength Range: 620-625nm., WIDE APPLICATION, These
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Novelty Place 100 Pcs 5mm Red LED Diode Lights - [Ultra Bright] Clear Transparent DC 2V 20mA Emitting Diodes LEDs Bulb - DIY Science Project
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Illuminate Your Space - LED Lighting Solutions
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LED (light emitting diode)
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CHANZON 100 pcs 5mm RGB Multicolor LED Diode Lights Common Cathode(Clear Round Transparent 3 Color) 4 pin Bright Lighting Bulb Lamps Electronics Components Indicator Light Emitting Diodes : Industrial & Scientific
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Illuminate Your Space - LED Lighting Solutions
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Temperature-dependent photoluminescent behavior of millimeter-scale Cs4PbBr6/CsPbBr3 bulk crystals and their application to white light-emitting diodes - ScienceDirect
![](https://web.physics.ucsb.edu/~lecturedemonstrations/images/NPN%20transistor%20switch_sch.jpg)
64.63 -- NPN transistor switch
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100 Pieces Clear LED Light Emitting Diodes Bulb LED Lamp, 5 mm (Multicolor)
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ZnO induced self-crystallization of CsPb(Br/I)3 nanocrystal glasses with improved stability for backlight display application - ScienceDirect