| 摘要 |
PROBLEM TO BE SOLVED: To provide a checker line which can be easily connected to an IC of a BGA package, etc. SOLUTION: This checker line 1000 has a first signal line 100, a second signal line 200, a contact part 300 and a heating part 400. The first and the second signal lines 100 and 200 have conductors 110 and 210 formed of a linearly extending conductive material respectively. The contact part 300 is constituted of a part of the conductor 110 of the first signal line 100 and is constituted to be able to be soldered. The heating part 400 is formed of a conductive material which heats when a current flows. Supplying a predetermined current to other ends 114 and 214 of the conductors 110 and 210 brings the heating part 400 to a state in which the heating part heats by a level to melt the solder.
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