The application of HITCE ceramic material for LGA-type chip scale package

Sample Preparation Challenges In WLCSP Epoxy Underfill Coating Removal

ISTFA 2012: Conference Proceedings from the 38th International Symposium for Testing and Failure Analysis ◽

10.31399/asm.cp.istfa2012p0471 ◽

2012 ◽

Author(s):

Jason H. Lagar ◽

Rudolf A. Sia

Keyword(s):

Sample Preparation ◽

Failure Analysis ◽

Vital Role ◽

Fault Isolation ◽

Wafer Level ◽

Chip Scale Package ◽

Coating Removal ◽

Customer Returns ◽

Preparation Techniques ◽

Mechanical Defect

Abstract Most Wafer Level Chip Scale Package (WLCSP) units returned by customers for failure analysis are mounted on PCB modules with an epoxy underfill coating. The biggest challenge in failure analysis is the sample preparation to remove the WLCSP device from the PCB without inducing any mechanical defect. This includes the removal of the underfill material to enable further electrical verification and fault isolation analysis. This paper discusses the evaluations conducted in establishing the WLCSP demounting process and removal of the epoxy underfill coating. Combinations of different sample preparation techniques and physical failure analysis steps were evaluated. The established process enabled the electrical verification, fault isolation and further destructive analysis of WLCSP customer returns mounted on PCB and with an epoxy underfill coating material. This paper will also showcase some actual full failure analysis of WLCSP customer returns where the established process played a vital role in finding the failure mechanism.

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Porous Ceramic Material Based on Clay And Waste of Production of Granite Rubble

Stroitel nye Materialy ◽

10.31659/0585-430x-2019-770-5-45-50 ◽

2019 ◽

Vol 770 (5) ◽

pp. 45-50

Author(s):

S.N. LEONOVICH ◽

◽

D.V. SVIRIDOV ◽

A.L. BELANOVICH ◽

L.S. KARPUSHENKOVA ◽

...

Keyword(s):

Ceramic Material ◽

Porous Ceramic

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Post insulators of ceramic material or glass for nominal voltages greater than 1000 V

10.3403/00003500 ◽

1982 ◽

Keyword(s):

Ceramic Material

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Insulators of ceramic material or glass for overhead lines with a nominal voltage greater than 1000 V

10.3403/00003327 ◽

1973 ◽

Keyword(s):

Ceramic Material ◽

Overhead Lines ◽

Nominal Voltage

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Use of Mathematical Modeling in Building Ceramics Functional Properties Studies

Materials Science Forum ◽

10.4028/www.scientific.net/msf.870.191 ◽

2016 ◽

Vol 870 ◽

pp. 191-195

Author(s):

N.A. Vil'bitskaya ◽

S.A. Vilbitsky ◽

A.G. Avakyan

Keyword(s):

Mathematical Modeling ◽

Data Processing ◽

Ceramic Material ◽

Functional Properties ◽

Statistical Data ◽

Ceramic Tiles ◽

Processing Methods ◽

Statistical Data Processing ◽

High Calcium ◽

Data Processing Methods

The peculiarities of using mathematical and statistical data processing methods in studying the intensification in the process of sintering a ceramic material with a high content of high-calcium waste, and mineralizing sintering lithium-containing waste were studied. The region of optimal ceramic masses composition, which allows obtaining ceramic tiles with high functional properties, was defined.

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Synthesis features, thermal behavior, and physical properties of Bi10Fe6Ti3O30 ceramic material

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2021.124386 ◽

2021 ◽

Vol 263 ◽

pp. 124386

Author(s):

Natalia Lomanova

Keyword(s):

Physical Properties ◽

Thermal Behavior ◽

Ceramic Material

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Ceramic Material for Thermal Barrier Coatings in Compression Ignition Engine for its Performance Evaluation with Biodiesel

Materials Today Proceedings ◽

10.1016/j.matpr.2021.02.274 ◽

2021 ◽

Author(s):

H.R. Amriya Tasneem ◽

K.P. Ravikumar ◽

H.V. Ramakrishna ◽

B. Kuldeep

Keyword(s):

Performance Evaluation ◽

Ceramic Material ◽

Thermal Barrier Coatings ◽

Thermal Barrier ◽

Compression Ignition ◽

Compression Ignition Engine ◽

Barrier Coatings

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Numerical Modeling and Experimental Characterization of the Pyroplasticity in Ceramic Materials during Sintering

Advances in Science and Technology ◽

10.4028/www.scientific.net/ast.62.203 ◽

2010 ◽

Vol 62 ◽

pp. 203-208 ◽

Cited By ~ 3

Author(s):

Pasquale Bene ◽

Danilo Bardaro ◽

Daniela Bello ◽

Orazio Manni

Keyword(s):

Ceramic Material ◽

Ceramic Materials ◽

Constitutive Law ◽

Beam Deflection ◽

Firing Cycle ◽

Experimental Characterization ◽

Viscosity Increase ◽

Ceramic Components ◽

Deflection Theory ◽

Sintering Shrinkage

The aim of the work is the study of the pyroplasticity in ceramic materials in order to simulate the deformations of complex ceramic component during sintering. A ceramic material undergoing densification can be treated as a linear viscous material. Generally, the viscosity decreases as the temperature increases, however the densification and the consequent grain growth, result in a viscosity increase. A bending creep test is proposed for measuring the change in viscosity of the ceramic material during densification. Equations, based on beam deflection theory, are derived to determine the viscosity during the whole firing cycle by measuring the deflection in the centre of specimens. In addition, dilatometric analyses are performed to measure the sintering shrinkage and the specimen density, which continuously changes during the sintering process. On the basis of an accurate experimental characterization the parameters of Maxwell viscoelastic constitutive law are derived. A numerical-experimental procedure has been adopted in order to calibrate the numerical model that, finally, has been used to predict the pyroplastic deformations of complex ceramic components.

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