Prototyping board Dimensions L x W: 68.7 x 84 mm Housing size: QFP 224, 232 (0.40 mm), QFP 256, 264 (0.50 mm) Copper lamination: 35μm Double Sided, Plated Through Material type: FR4 Epoxide + chem. Au Pitch: 2.54 mm Board thickness: 1.5 mm