150pcs Included ICs: PC817c, 20 pcs, DIP-4, General Purpose Photocoupler ICL7660s, 2 pcs, Super Voltage Converter, Charge Pump NE555, 20 pcs, DIP-8, Timer, Pulse generation, Oscillator LM358, 10 pcs, DIP-8, Low Power Dual Operational Amplifier LM324, 10pcs, DIP-14, Quad Operational Amplifier JRC4558, 10 pcs, DIP-8, Dual Operational Amplifier LM393, 10 pcs, DIP-14, Low Offset Voltage Dual Comparator LM339, 10 pcs, DIP-8, Low Power Quad Voltage Comparators NE5532, 5 pcs, DIP-8, Dual high-performance low-noise Operational Amplifier LM386m, 5 pcs, DIP-8, Low Power Audio Frequency Amplifier TDA2030A, 2 pcs, TO-220, Audio Amplifier in a Pentawatt Package TDA2822D, 5 pcs,DIP-8, Low Power Stereo Op Amplifier PT2399, 3 pcs, DIP-16, CMOS Echo Audio Processor UC3842AN, 5 pcs, DIP-8, High Performance Current Mode Controller UC3843AN, 5 pcs, DIP-8, High Performance Current Mode Controller ULN2003AN, 5 pcs, DIP-16, Bipolar (BJT) Transistor Array 7 NPN Darlington 50V 500mA ULN2803APG, 5 pcs, DIP-18, Bipolar (BJT) Transistor Array 8 NPN Darlington 50V 500mA Included Sockets: DIP4 Socket, 2 pcs DIP8 Socket, 7 pcs DIP14 Socket, 3 pcs DIP16 Socket 3 pcs DIP18 Socket, 2 pcs DIP8 - SOP8 Through Hole to SMD Conversion Adapter, 1 pcs