Features: brand new and high quality The IC chip can be used for low-voltage quad operational amplifiers, low-voltage audio power amplifiers, low-power and low-bias voltage dual comparators, high-gain operational amplifiers, low-noise dual operational amplifiers, timers, optocouplers, high-current drive arrays and Linton- array. Our IC chip is a small electronic component, small in size, and only takes up a small space in the application. The power consumption is low, and it can work normally with very little power consumption. This set includes120pcs IC chips, LM324N/ LM339N/ ULN2003AN/ ULN2803APG/ LM358P/ DIP-Audio- LM38 / LM393/ NE5532P / NE555P /UA741CN/ JRC4558D/ PC817 They are placed in a transparent plastic box, easy to transport and storage. ICs are made of high-quality materials, they are very durable, can serve you for a long for time. And the safety and reliability are high, not easy to fail, so you can use it with confidence. Specifications: Name：Optical coupling IC Chips Type: LM324N/ LM339N/ ULN2003AN/ ULN2803APG/ LM358P/ DIP-Audio- LM38 / LM393/ NE5532P / NE555P /UA741CN/ JRC4558D/ PC817 Quamtity: 120pcs Material: Metal Package Box Size：15x10x3cm/5.91x3.94x1.18in Package Includes: 5PCSx LM324N、DIP-14 5PCSx LM339N、DIP-8 5PCSx ULN2003AN DIP-16 5PCSx ULN2803APG,DIP-18 10 PCSx LM358P, DIP-8 10PCSx DIP-Audio- LM38 10 PCSx LM393 DIP-14 10 PCSx NE5532P、DIP-8 10 PCSx NE555P、DIP-8 10 PCSx UA741CN，DIP-8 10 PCSx JRC4558D,DIP-8 10 pcs x PC817 DIP-4 12 pcs x DIP8 Socket 4 pcs x DIP14 Socket 2 pcs x DIP16 Socket 2 pcsx DIP18 Socket note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.