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ZA706172B - Printed circuit boards - Google Patents

Printed circuit boards

Info

Publication number
ZA706172B
ZA706172B ZA706172A ZA706172A ZA706172B ZA 706172 B ZA706172 B ZA 706172B ZA 706172 A ZA706172 A ZA 706172A ZA 706172 A ZA706172 A ZA 706172A ZA 706172 B ZA706172 B ZA 706172B
Authority
ZA
South Africa
Prior art keywords
printed circuit
circuit boards
boards
printed
circuit
Prior art date
Application number
ZA706172A
Other languages
English (en)
Inventor
R Cooke
J Tarnowski
S Plater
R Judd
R Neale
Original Assignee
Standard Telephones Cables Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephones Cables Ltd filed Critical Standard Telephones Cables Ltd
Publication of ZA706172B publication Critical patent/ZA706172B/xx

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/3457—Solder materials or compositions; Methods of application thereof
    • H05K3/3473—Plating of solder
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/22—Secondary treatment of printed circuits
    • H05K3/24—Reinforcing the conductive pattern
    • H05K3/243—Reinforcing the conductive pattern characterised by selective plating, e.g. for finish plating of pads
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
    • H05K2201/09736—Varying thickness of a single conductor; Conductors in the same plane having different thicknesses
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
    • H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process
    • H05K3/061—Etching masks
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
    • H05K3/42—Plated through-holes or plated via connections
    • H05K3/425—Plated through-holes or plated via connections characterised by the sequence of steps for plating the through-holes or via connections in relation to the conductive pattern
    • H05K3/427—Plated through-holes or plated via connections characterised by the sequence of steps for plating the through-holes or via connections in relation to the conductive pattern initial plating of through-holes in metal-clad substrates

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
  • Manufacturing Of Printed Wiring (AREA)
ZA706172A 1969-11-05 1970-09-10 Printed circuit boards ZA706172B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB54282/69A GB1254384A (en) 1969-11-05 1969-11-05 Printed circuit boards

Publications (1)

Publication Number Publication Date
ZA706172B true ZA706172B (en) 1971-05-27

Family

ID=10470496

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA706172A ZA706172B (en) 1969-11-05 1970-09-10 Printed circuit boards

Country Status (4)

Country Link
BE (1) BE758490A (fr)
FR (1) FR2069036A5 (fr)
GB (1) GB1254384A (fr)
ZA (1) ZA706172B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3110528A1 (de) * 1981-03-18 1982-10-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zur herstellung gedruckter schaltungen
EP0696409A1 (fr) * 1993-04-26 1996-02-14 P.A.C. DI BEZZETTO SANDRO & C.S.N.C. Procede de fabrication d'une carte de circuits imprimes

Also Published As

Publication number Publication date
FR2069036A5 (fr) 1971-09-03
BE758490A (fr) 1971-05-05
GB1254384A (en) 1971-11-24

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