A device for filtering intake air of an internal combustion engine, including at least one filtering element including an inlet for air being treated, a first clean air outlet toward the engine, and a second air outlet toward the outside, and a ventilation mechanism driving the air from the second air outlet. The solder compositions have a solidus-liquidus temperature range that encompasses the IC chip operational temperature range. The connector is then fixed to the case by means of a fitting construction. The first wiring has a length and a width each substantially parallel to the light-emitting surface.