| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface-treated copper foil excellent in peel strength, a laminate using the same, a printed wiring board, an electronic component and a production method of the surface-treated copper foil.SOLUTION: In a surface-treated copper foil having a surface-treated layer formed of chromium oxide, when being immersed as long as 30 seconds into a nitric acid bath having a concentration of 20 mass% and a temperature of 25°C in the state where only the surface of the surface-treated layer is exposed, after applying heat treatment of 250°C×10 min., the elution amount of copper into the nitric acid bath is 0.0030 g/25 cmor less. |
