2017

Autumn Holiday

Works Closed

30th Oct-3rd Nov

Printed circuit board Manufacturer, Photoplotting Established 1964  All types of Pcb, surface mount sm, PTH, SS single     UK Printed Circuit Board manufacturers. UK PCB Manufacture since 1964. single sided SS PCB, PTH PCB, IMS PCB, PCB JPG, DFX PCB,

ML multi layer printed circuit board  prototypes. Cheap high quality PCBs Printed circuit boards. Fast cheap UK Prototype PCB

Printed circuit boards tooled up from Gerber,JPG,DXF,and most common file types, or camera ready artworks either 2:1 or 1:1 std scale.

• Home Page • Return • About Us • Tech Data Pages • Web Links • Main Index •

 

 Section Menu

 

 

                          

 

 

Hard [Electrolitic] Gold:-
 
Hard Gold is used where either a very resilient surface finish is required, or in the case of edge connectors a wear resistant oxide free finish is required. 

Unlike electroless finishes being an electrolytic process an electric current required to plate the gold onto the board. The thickness of the gold coating can be easily controlled by the plating current and plating time. In the days of old edge connectors were regularly specified as requiring 7.5 micros of gold plating, P&M Services still normally plates 3 microns,  but if the thickness if left unspecified the norm within our industry is much less. To plate an edge connector a panel is normally masked with tape of peelable resist then edge dipped into the plating solution.

Hard gold can also be used as a total circuit board finish, in which case the cheapest production route can be to photo print a negative image, plate the remaining exposed copper with gold, then strip off the photo resist and use the gold as an etch resist.

 

 

Electroless Tin

Board Finish's

 

 
                          

Copyright  2016 P. & M. Services (Rochdale) Ltd

 Rev  09 November 2017

 Registered No 0853754 (England).