Circuit board manufacture

Details Circuit board manufacture Circuit board manufacture

H - Electricity

05

K

H05K 1/00 (2006.01) G01R 27/00 (2006.01) G01R 27/02 (2006.01) G01R 31/12 (2006.01) G01R 31/28 (2006.01) H05K 1/02 (2006.01)

Patent

CA 2135953

To determine the stabilized surface insulation resistance (SIR) of a printed circuit board substrate and test printed circuit board is provided which has desirable clean surface conditions. This surface which bears a predetermined circuit board test pattern has a known SIR characteristic resulting in a known stabilized SIR. The test board is then subjected to a soldering step which, in practice, is performed in the in-line production with commercial boards. After the soldering step, the SIR characteristic of the soldered test board is determined for a time period sufficient for a comparison with the SIR characteristic of the clean test board to enable the stabilized SIR of the soldered test board to be determined.

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