| abstract |
The present invention provides a conductive adhesive layer that has good temporary adhesion, is difficult to produce adhesion and surface-to-surface adhesion, has good adhesion strength with metal reinforcement plates, and has good connection reliability after reflow, and has Its conductive adhesive sheet, printed wiring board and electronic equipment. The conductive adhesive layer (2) of the present invention is a conductive adhesive layer (2) formed on the peelable film (1) and used, and the surface roughness Ra of the surface B on the peelable film (1) side is 3 μm ~6 μm, and the surface roughness Ra of the surface A on the other side is 0.2 μm to 1.1 μm. |