Major Brands 4N35 Optocoupler, DC Input 1 Channel Trans with Base DC Output, 100% Transfer Ratio, 6-Pin, PDIP, 1.2V, 4 mm H x 7 mm W x 7.62 mm L (Pack of 20)

Gikfun OPTOCOUPLER DIP-4 PC817C PC817 for Arduino Diy (Pack of 20pcs) AE1143

eBoot 30 Pieces Photoresistor Photo Light Sensitive Resistor Light Dependent Resistor 5 mm GM5539 5539

MCIGICM Schottky Rectifier Diode Assorted Kit, 1N4148 1N4007 1N5819 1N5399 1N5408 1N5822 FR107 FR207, 8 Values 100Pcs Electronic Assortment

Chanzon 1W Zener Diode Assorted Kit (30 Values x 10pc 3V 3.3V 3.6V 3.9V 4.3V 4.7V 5.1V 5.6V 6.2V 6.8V 7.5V 8.2V 9.1V 10V 11V 12V 13V 15V 16V 18V 20V 22V 24V 27V 30V 33V 36V 39V 43V 47V) Assortment Set

Major Brands IRF540 Transistor, MOSFET, N-Channel, 100 V (Pack of 5)

(15 Pieces) MCIGICM IC 7805 Voltage Regulator, L7805 Linear Positive Fixed 1 Output 5V 1.5A

AUSTOR 100 Pcs PCB Board Kit Including 30 Pcs Double Sided Prototype Boards and 30 Pcs 40 Pin 2.54mm Male and Female Header Connector(Bonus: 10 Pcs 2P&3P Screw Terminal Blocks and 30 Pcs Jumper Caps)

ELEGOO for Arduino Nano V3.0, Nano Board CH340/ATmega328P Without USB Cable, Compatible with Arduino Nano V3.0 (Nano x 3 Without Cable)

OCR 24Value 500pcs Electrolytic Capacitor Assortment Box Kit Range 0.1uF－1000uF

Elegoo 17 Values 1% Resistor Kit Assortment, 0 Ohm-1M Ohm (Pack of 525) RoHS Compliant