Invention Grant
- Patent Title: Fixed network resistor
- Patent Title (中): 固定网络电阻
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Application No.: US10533035Application Date: 2003-10-28
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Publication No.: US07227443B2Publication Date: 2007-06-05
- Inventor: Takahiro Kuriyama
- Applicant: Takahiro Kuriyama
- Applicant Address: JP Kyoto
- Assignee: Rohm Co., Ltd.
- Current Assignee: Rohm Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Hamre, Schumann, Mueller & Larson, P.C.
- Priority: JP2002-317591 20021031; JP2003-318684 20030910
- International Application: PCT/JP03/13749 WO 20031028
- International Announcement: WO2004/040591 WO 20040513
- Main IPC: H01C1/02
- IPC: H01C1/02

Abstract:
A fixed resistor network has an insulating substrate, a plurality of film resistors arranged on a top surface of the insulating substrate, terminal electrodes formed for the film resistors on each lengthwise sidewall of the insulating substrate at a given pitch along the sidewall, and recesses provided between the terminal electrodes. The occurrence of solder bridges between the terminal electrodes during solder mounting and the occurrence of chipping in the terminal-electrode-forming areas between the recesses on the lengthwise sidewall are both reduced by making the width of the recesses along the lengthwise sidewall either 0.44 to 0.48 times or 0.525 to 0.625 times the pitch.
Public/Granted literature
- US20050285713A1 Fixed network resistor Public/Granted day:2005-12-29
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