GB2385207B - Chip resistors and laser-trimming of same - Google Patents

Chip resistors and laser-trimming of same

Info

Publication number
GB2385207B
GB2385207B GB0308606A GB0308606A GB2385207B GB 2385207 B GB2385207 B GB 2385207B GB 0308606 A GB0308606 A GB 0308606A GB 0308606 A GB0308606 A GB 0308606A GB 2385207 B GB2385207 B GB 2385207B
Authority
GB
United Kingdom
Prior art keywords
trimming
laser
same
chip resistors
resistors
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.)
Expired - Fee Related
Application number
GB0308606A
Other versions
GB2385207A (en
GB0308606D0 (en
Inventor
Hiroshi Kaida
Shigeru Kambara
Masato Doi
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.)
Rohm Co Ltd
Original Assignee
Rohm Co 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 Rohm Co Ltd filed Critical Rohm Co Ltd
Priority to GB0308606A priority Critical patent/GB2385207B/en
Priority claimed from GB9820549A external-priority patent/GB2341730B/en
Publication of GB0308606D0 publication Critical patent/GB0308606D0/en
Publication of GB2385207A publication Critical patent/GB2385207A/en
Application granted granted Critical
Publication of GB2385207B publication Critical patent/GB2385207B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/22—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming
    • H01C17/24—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material
    • H01C17/242—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material by laser
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/001—Mass resistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Non-Adjustable Resistors (AREA)
GB0308606A 1998-09-21 1998-09-21 Chip resistors and laser-trimming of same Expired - Fee Related GB2385207B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0308606A GB2385207B (en) 1998-09-21 1998-09-21 Chip resistors and laser-trimming of same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9820549A GB2341730B (en) 1998-09-21 1998-09-21 Chip resistors and laser-trimming of same
GB0308606A GB2385207B (en) 1998-09-21 1998-09-21 Chip resistors and laser-trimming of same

Publications (3)

Publication Number Publication Date
GB0308606D0 GB0308606D0 (en) 2003-05-21
GB2385207A GB2385207A (en) 2003-08-13
GB2385207B true GB2385207B (en) 2003-10-08

Family

ID=10839213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0308606A Expired - Fee Related GB2385207B (en) 1998-09-21 1998-09-21 Chip resistors and laser-trimming of same

Country Status (1)

Country Link
GB (1) GB2385207B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117571A (en) * 1981-12-02 1983-10-12 Spectrol Electronics Corp A method of trimming a resistance element
EP0154399A2 (en) * 1984-01-30 1985-09-11 Tektronix, Inc. Film resistor trimming
GB2205448A (en) * 1987-05-29 1988-12-07 Crystalate Electronics Trimming a resistor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117571A (en) * 1981-12-02 1983-10-12 Spectrol Electronics Corp A method of trimming a resistance element
EP0154399A2 (en) * 1984-01-30 1985-09-11 Tektronix, Inc. Film resistor trimming
GB2205448A (en) * 1987-05-29 1988-12-07 Crystalate Electronics Trimming a resistor

Also Published As

Publication number Publication date
GB2385207A (en) 2003-08-13
GB0308606D0 (en) 2003-05-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20090921