GB2341730B - Chip resistors and laser-trimming of same - Google Patents

Chip resistors and laser-trimming of same

Info

Publication number
GB2341730B
GB2341730B GB9820549A GB9820549A GB2341730B GB 2341730 B GB2341730 B GB 2341730B GB 9820549 A GB9820549 A GB 9820549A GB 9820549 A GB9820549 A GB 9820549A GB 2341730 B GB2341730 B GB 2341730B
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
GB9820549A
Other versions
GB2341730A (en
GB9820549D0 (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 GB9820549A priority Critical patent/GB2341730B/en
Priority to GB0308606A priority patent/GB2385207B/en
Priority to DE19843699A priority patent/DE19843699A1/en
Publication of GB9820549D0 publication Critical patent/GB9820549D0/en
Publication of GB2341730A publication Critical patent/GB2341730A/en
Application granted granted Critical
Publication of GB2341730B publication Critical patent/GB2341730B/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
    • H01C17/006—Apparatus or processes specially adapted for manufacturing resistors adapted for manufacturing resistor chips
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Non-Adjustable Resistors (AREA)
GB9820549A 1998-09-21 1998-09-21 Chip resistors and laser-trimming of same Expired - Fee Related GB2341730B (en)

Priority Applications (3)

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
DE19843699A DE19843699A1 (en) 1998-09-21 1998-09-23 Laser trimmed chip resistor includes a pair of electrodes mounted on a substrate, with a resistor connecting the two electrodes, the resistor being trimmed to achieve the desire characteristics

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
DE19843699A DE19843699A1 (en) 1998-09-21 1998-09-23 Laser trimmed chip resistor includes a pair of electrodes mounted on a substrate, with a resistor connecting the two electrodes, the resistor being trimmed to achieve the desire characteristics

Publications (3)

Publication Number Publication Date
GB9820549D0 GB9820549D0 (en) 1998-11-11
GB2341730A GB2341730A (en) 2000-03-22
GB2341730B true GB2341730B (en) 2003-07-16

Family

ID=26049047

Family Applications (1)

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

Country Status (2)

Country Link
DE (1) DE19843699A1 (en)
GB (1) GB2341730B (en)

Citations (5)

* 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
US4727350A (en) * 1986-04-28 1988-02-23 Hitoshi Ohkubo Surge absorber
GB2205448A (en) * 1987-05-29 1988-12-07 Crystalate Electronics Trimming a resistor
US5504470A (en) * 1993-10-12 1996-04-02 Cts Corporation Resistor trimming process for high voltage surge survival

Patent Citations (6)

* 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
US4727350A (en) * 1986-04-28 1988-02-23 Hitoshi Ohkubo Surge absorber
US4727350B1 (en) * 1986-04-28 1994-02-01 Ohkubo Hitoshi Surge absorber
GB2205448A (en) * 1987-05-29 1988-12-07 Crystalate Electronics Trimming a resistor
US5504470A (en) * 1993-10-12 1996-04-02 Cts Corporation Resistor trimming process for high voltage surge survival

Also Published As

Publication number Publication date
GB2341730A (en) 2000-03-22
GB9820549D0 (en) 1998-11-11
DE19843699A1 (en) 2000-03-30

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Legal Events

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

Effective date: 20040921