SU875260A1 - Method of quality control of welded joints of microcircuits - Google Patents
Method of quality control of welded joints of microcircuits Download PDFInfo
- Publication number
- SU875260A1 SU875260A1 SU802886685A SU2886685A SU875260A1 SU 875260 A1 SU875260 A1 SU 875260A1 SU 802886685 A SU802886685 A SU 802886685A SU 2886685 A SU2886685 A SU 2886685A SU 875260 A1 SU875260 A1 SU 875260A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- quality
- current
- microcircuits
- welded joints
- quality control
- Prior art date
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
(54) СПОСОБ КОНТРОЛЯ КАЧЕСТВА СВАРНОГО СОЕДИНЕНИЯ В МИКРОСХЕМЕ(54) METHOD FOR QUALITY CONTROL OF WELDED CONNECTION IN MICROCHEM
Изобретение относитс к средствам контрол качества неразъемных соединений в схемах электро- и радиоаппаратуры и может быть использовано дл контрол качества точечных сварных соединений в микросхемах. Известен способ контрол качества сварных соединений путем измерени третьей гармоники тока вихретокового преобразовател , взаимодействующего с ферромагнитным сварным соеди нением л J. Однако достоверность контрол точечных сварных соединений в неферромагнитных материалах недостаточна из-за трудностей при локализации .пол вихретокового преобразовател в зоне точечной сварки. Наиболее близким по технической сущности к предлага;емому вл етс способ контрол качества сварного со динени в микросхеме, заключанлцийс в том, что через контролируемое, соединение пропускают ток от источни- ка синусоидального тока и измер ют падение напр жени от третьей гармоники зтого тока 2J. Однако достоверность контрол этим способом недостаточна, так как вышеуказанные операции производ т в статике. Цель изобретени - повышение достоверности контрол и прогнозировани качества соединени во времени. Эта цель достигаетс тем, что к контролируемому соединению прикладывают калиброванную нагрузку отрыва , регистрируют изменение падени напр жени и путем сравнени его с заранее заданным значением определ ют стабильность качества соединени . На чертеже представлено устройство , реализующее предлагаемый способ . Устройство содержит источник 1 синусоидального сигнала, бапластйый резистор 2, селективный йикровольтметр ..З. св занные с контролиThe invention relates to the means of quality control of permanent joints in the circuits of electrical and radio equipment and can be used to control the quality of spot welded joints in microcircuits. There is a known method for controlling the quality of welded joints by measuring the third harmonic of the eddy current probe current interacting with a ferromagnetic welded joint l J. However, the accuracy of testing spot welded joints in non-ferromagnetic materials is insufficient due to difficulties in localizing an eddy current probe in the spot welding zone. The closest in technical essence to the proposed; this is a method for controlling the quality of a welded connection in a microcircuit, concluded that through a controlled connection, a current is passed through from a source of sinusoidal current and the voltage drop from the third harmonic of this current is 2J. However, the reliability of the control by this method is insufficient, since the above operations are performed in statics. The purpose of the invention is to increase the reliability of monitoring and predicting the quality of a compound over time. This goal is achieved by applying a calibrated breakout load to the monitored compound, registering the change in voltage drop, and comparing the quality of the connection by comparing it with a predetermined value. The drawing shows a device that implements the proposed method. The device contains a source of 1 sinusoidal signal, a capacitor resistor 2, a selective voltmeter .. З. control related
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802886685A SU875260A1 (en) | 1980-02-15 | 1980-02-15 | Method of quality control of welded joints of microcircuits |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802886685A SU875260A1 (en) | 1980-02-15 | 1980-02-15 | Method of quality control of welded joints of microcircuits |
Publications (1)
Publication Number | Publication Date |
---|---|
SU875260A1 true SU875260A1 (en) | 1981-10-23 |
Family
ID=20879518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU802886685A SU875260A1 (en) | 1980-02-15 | 1980-02-15 | Method of quality control of welded joints of microcircuits |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU875260A1 (en) |
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1980
- 1980-02-15 SU SU802886685A patent/SU875260A1/en active
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