Masks are prepared as negative layers so any components placed on them will in fact be areas free of paint. Typically these are SMD pads or assembling holes which can be defined in two ways (fig. 1):
- by copper which means that the mask does not influence the pad size — the opening is larg...
The specification most often charactering the mask’s performance is it thickness.
In the case of a wet mask, it is a maximum of 40 µm ÷ 50 µm (thickness in mass areas) assuming that it is applied to copper with a typical thickness of 35 µm. The mask has a...
The solder mask (wet) is applied to the surface of the circuits using two methods: screen printing and photo printing.
Screen printing consists in applying the mask image by means of a screen and then hardening it thermally or with use of UV radiation.
In the photo printi...
Mosaics of printed circuits are made from copper whose major advantage is excellent conductivity of electrical current and heat. At the same time, this metal is susceptible to the adverse effects of oxidation when in contact with air and moisture. In order to protect mosaics from environmental impac...
Looking through the TS PCB TECHNO-SERVICE S.A. archives, we found a photo of a brushing machine we used in the 80.
Photo: brushing machine_archive TS PCB TECHNO-SERVICE S.A.
The machine we are currently using enables us to reduce the number...
Does anyone still remember AWS-1 NC driller?
When TS PCB TECHNO-SERVICE S.A. was initiating its production activity in 1985, it was a jewel among our machinery.
Photo: awS-1 NC drill_archives TS PCB Techno-Service S.A.
Now nothing reminds us...