Item Standards Board Characteristic Appearance IPC-A-600H or Customer Specification Tolerance of hole size IPC-A-600H or Customer Specification Thickness IPC-A-600H or Customer Specification Track Width / Spacing IPC-A-600H or Customer Specification Soldermask / Silkscreen IPC-A-600H or Customer Specification Outline Tolerance IPC-A-600H or Customer Specification Surface IPC-A-600H or Customer Specification Inspection Coating measure IPC-A-600H or Customer Specification PTH Wall Plating IPC-A-600H or Customer Specification Solderability IPC-A-600H or Customer Specification Thermal Shock IPC-A-600H or Customer Specification Solvent Test IPC-A-600H or Customer Specification Ionic Cleanliness IPC-A-600H or Customer Specification Isolation Resistance IPC-A-600H or Customer Specification Impedance IPC-A-600H or Customer Specification