Item Descriptions:-Package includes: In total 50pcs 10 size, each size per 5pcs. You will get LM324, LM358, LM386, LM393, UA741, NE5532, NE555, PC817, ULN2003, ULN2803. So Many different Types popular IC chip assortment kit can meet all your daily needs.-Feature: Integrated circuits have the advantages of small size, light weight, small solder joints, long life, high reliability, and good performance.-Application: for most terminal industries, such as Photocouplers, Timers, Osciallators, Dual Opamps, Quad Opamps, Comperators, Audio Amplifiers, Echo Processors, Current Mode Controllers, Darlington Arrays, Voltage Charge Pump,etc.-Low input: Low input bias current, low input offset voltage and offset current. Common mode input voltage range, including ground.-Durable material: The chip is made of metal oxide semiconductor material, which has good thermal stability and long service life.Package:50pcs Integrated Circuit Chip Assortment KitItem Specifications:Model:LM324, LM358, LM386, LM393, UA741, NE5532, NE555, PC817, ULN2003, ULN2803Package type:DIP4 DIP8 DIP14 DIP16 DIP18Quantity:50pcs