ITEM NAME:10pcs SMD NE555 555 Timer IC Module SOP8 Integrated Circuit Chip Black Description: Low Turn Off Time Maximum Operating Frequency Greater than 500kHz Timing From Microseconds To Hours Operates In Both Astable and Monostable Modes Adjustable Duty Cycle TTL Compatible Temperature Stability of 0.005% Per  °C Model: NE555 Type: SOP8 Voltage Supply: 4.5-16V High Output Current can Source or Sink 225mA Size(LxW): Approx. 0.24 x 0.2inch / 6 x 5mm Pin Number: 8 Package Includes: 10pcs NE555 SOP8 Timer Kits.Model: NE555. Type: SOP8. People always bought together with. Pin Number: 8. Size(LxW): Approx. High Output Current can Source or Sink 225mA.