Patent ID: 8451010

Claim:
A coupon board that is cut out as part of a printed wiring board from a sheet material for evaluating characteristics of the printed wiring board, comprising: a solder resist film formed on a surface of the printed wiring board and coupon board cut out from the sheet material, wherein the sheet material comprises a glass cloth fiber and resin; a region of the coupon board on which the solder resist film is not formed, wherein visual recognition of the orientation of the glass cloth fiber in the coupon board is not hindered, and which region extends parallel with one side of the printed wiring board, wherein the orientation of the weave of the glass cloth fibers in the coupon board is the same as the orientation of the weave of the glass cloth fibers in the printed wiring board, and wherein the printed wiring board and the coupon board are cut out of the sheet material as a single piece.