Welcome to the store! Includes useful IC types such as: Optocouplers, Oscillators, Dual Op-Amps, Quad Op-Amps, Comparators, Audio Amplifiers, Processors, Power Control Controllers, Arrays, Voltage Charge Pumps color: black Material: plastic Package Contents: 20 x PC817c, DIP-4, Optocoupler 2 x ICL7660s, Super Voltage Converter, Charge Pump 20 x NE555, DIP-8, Pulse Generation, Oscillator 10 x LM358, DIP-8, Low Power Dual Operational Amplifier 10 x LM324, DIP-14, Quad Operational Amplifier 10 x JRC4558, DIP-8, Dual Operational Amplifier 10 x LM393, DIP-14, Low Offset Voltage Dual Comparator 10 x LM339, DIP-8, Low Power Quad Voltage Comparators 5 x NE5532, DIP-8, Dual High Performance Low Noise Operational Amplifier 5 x LM386m, DIP-8, Low Power Audio Frequency Amplifier 2 x TDA2030A, TO-220, Single Pentawatt Package Audio Amplifier 5 x TDA2822D, DIP-8, Low Power Stereo Op-Amplifier 3 x PT2399, DIP-16, CMOS Audio Processor 5 x UC3842AN, DIP-8, High Performance Current Mode Controller 5 x UC3843AN, DIP-8, High Performance Current Mode Controller 5 x ULN2003AN, DIP-16, Bipolar (BJT) Transistor Array 7 NPN 50V 500mA 5 x ULN2803APG, DIP-18, Bipolar (BJT) Transistor Array 8 NPN 50V 500mA 2 x DIP4 socket 7 x DIP8 socket 3 x DIP14 socket 3 x DIP16 socket 2 x DIP18 socket 1 x DIP8 to SOP8 Through Hole to SMD Conversion Adapter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!