Prototyping board Dimensions L x W: 73.66 x 43.18 mm Housing size: TSOP56, HTSOP56 (0.65 mm) Copper lamination: 35μm Double Sided, Plated Through Material type: FR4 Epoxide + chem. Au Pitch: 2.54 mm Board thickness: 1.5 mm No. of pins: 56