The PCB board has two sides. A side and B side it can be used to convert SOT23 (Pin pitch 0.95mm) to SIP3 (2.54mm pin pitch). The PCB board mounting 2.54mm pitch Pin Header. It can be plugged directly into 2.54mm PCB board or breadboard. SOT23(Pitch 0.95mm)to SIP3(2.54pin pitch) Product parameters: size:7.5 x 10mm Hole distance:2.54mm Aperture:1.0mm Plate thickness:1.6mm Type:Integrated Circuits Model Number:SOT23 SOT23-3 color:Green Material:FR-4 glass fiber board size:7.5 x 10mm Package Contents: 50 x SMD SOT23-3 to DIP SIP3 Adapter / 20 x SMD SOT23-3 to DIP SIP3 Adapter / 10 x SMD SOT23-3 to DIP SIP3 Adapter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.