Through hole pitch changer. 1.78 mm to 2.54 mm (0.070 inch to 0.1 inch) pitch conversion. 20 pins. PCB Dimensions: 50.8 x 10.16 x 1.6 mm (2.0 x 0.4 x 0.0625 inches). PCB construction: FR-4 UL94V-0. PCB operating temperature range: -40C to +130C. PCB reflow maximum temperature: +260C. Pitch Adapter Hole Sizes: 1.00 mm pitch holes have diameter of 0.42 mm. 1.27 mm pitch holes have diameter of 0.64 mm. 1.70 mm pitch holes have diameter of 1.3 mm. 1.78 mm pitch holes have diameter of 1.3 mm. 2.00 mm pitch holes have diameter of 0.8 mm. 2.54 mm pitch holes have diameter of 1.0 mm. 3.96 mm pitch holes have diameter of 3.06 mm.