JPS6451689A - Printed circuit board of silicon steel base plate - Google Patents

Printed circuit board of silicon steel base plate

Info

Publication number
JPS6451689A
JPS6451689A JP20945287A JP20945287A JPS6451689A JP S6451689 A JPS6451689 A JP S6451689A JP 20945287 A JP20945287 A JP 20945287A JP 20945287 A JP20945287 A JP 20945287A JP S6451689 A JPS6451689 A JP S6451689A
Authority
JP
Japan
Prior art keywords
silicon steel
steel plate
rust
coated
metal layer
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP20945287A
Other languages
Japanese (ja)
Inventor
Takeshi Kano
Munehiko Fukushima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP20945287A priority Critical patent/JPS6451689A/en
Publication of JPS6451689A publication Critical patent/JPS6451689A/en
Pending legal-status Critical Current

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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/03—Use of materials for the substrate
    • H05K1/05—Insulated conductive substrates, e.g. insulated metal substrate

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Insulated Metal Substrates For Printed Circuits (AREA)

Abstract

PURPOSE:To prevent the progress of rust from a sagged surface caused by punching work to the inside of a wiring board, by constituting the board metal of silicon steel plate coated with a rust proof metal layer. CONSTITUTION:The surface of a silicon steel plate 1 is coated with a rust proof metal layer 2, which can be formed of oxidation resistant metal, e.g., aluminum, zinc, nickel, and chromium. The rust proof metal layer 2 is formed by electroplating, electroless plating, vapor-deposition, etc. After the silicon steel plate 1 is coated with the rust proof metal 2, resin, resin-impregnated glass cloth, etc., are arranged as a bonded insulating layer 3, and further a metal foil 4 is arranged, which are laminated and unified in a body. Then a circuit is formed, and punching work for digging holes, and the like are performed. Although the silicon steel plate 1 exfoliates from the bonded insulating layer 3, the end-surface of a sagged part 6 of the silicon steel plate 1 after exfoliation is coated with the rust-proof metal layer 2.
JP20945287A 1987-08-24 1987-08-24 Printed circuit board of silicon steel base plate Pending JPS6451689A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20945287A JPS6451689A (en) 1987-08-24 1987-08-24 Printed circuit board of silicon steel base plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20945287A JPS6451689A (en) 1987-08-24 1987-08-24 Printed circuit board of silicon steel base plate

Publications (1)

Publication Number Publication Date
JPS6451689A true JPS6451689A (en) 1989-02-27

Family

ID=16573105

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20945287A Pending JPS6451689A (en) 1987-08-24 1987-08-24 Printed circuit board of silicon steel base plate

Country Status (1)

Country Link
JP (1) JPS6451689A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005305842A (en) * 2004-04-22 2005-11-04 Sharp Corp Composite steel sheet and method for manufacturing the same
CN100433321C (en) * 2005-07-29 2008-11-12 三洋电机株式会社 Circuit board and circuit apparatus using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005305842A (en) * 2004-04-22 2005-11-04 Sharp Corp Composite steel sheet and method for manufacturing the same
CN100433321C (en) * 2005-07-29 2008-11-12 三洋电机株式会社 Circuit board and circuit apparatus using the same

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