Skip to content

All published articles 500

Augmented Leadframe Design for Stable Multi-Wire Ground Bonding

Frederick Ray I. Gomez, Alyssa Grace S. Gablan, Anthony R. Moreno & Nerie R. Gomez · Journal of Engineering Research and Reports · 2021

Technological change has brought the global market into broad industrialization and modernization. One major application in the semiconductor industry demands safety and high reliability with strict compliance requirement. This technical paper focuses on the package design soluti...

Open access Research Article 10.9734/jerr/2021/v20i317273

Ensuring Accurate Results in Fracture Mechanics Four-Point Bending Interface Characterization

Jefferson Talledo · Journal of Engineering Research and Reports · 2021

Interface adhesion tests are conducted to obtain a quantitative value of the adhesion strength or interface fracture toughness to forecast initiation and propagation of interface delamination failures in semiconductor packages. One of the common methods of fracture mechanics inte...

Open access Research Article 10.9734/jerr/2021/v20i217282

Capacity Improvement for Transfer Molding Trough Reduction of Mold Curing Time

Lester Joseph T. Belalo & Maiden Grace R. Maming · Journal of Engineering Research and Reports · 2021

This paper will discuss the improvement made to increase machine capacity in order to be prepare for incoming demand ramp-up and to free up machine allocation to back-up automotive machine. Using DMAIC methodology (Define, Measure, Analyze, Improve and Control) approach, mold cur...

Open access Research Article 10.9734/jerr/2021/v20i217272

Understanding Package Delamination through Package Deformation Modeling at Different Thermal Conditions

Jefferson Talledo · Journal of Engineering Research and Reports · 2021

Package delamination is one of the problems in semiconductor packaging. Understanding the delamination mechanism in a specific situation is very important to identify the root cause and implement robust solution. In this study, package deformation modeling was done to analyze the...

Open access Research Article 10.9734/jerr/2021/v20i217278

Mechanical Modeling Study on the Impact of Pick-and-Place Design on Die Attach Voids

Jefferson Talledo · Journal of Engineering Research and Reports · 2021

Pick-and-place (PnP) rubber tip is used for the die attach process in semiconductor packaging. During the die attach process involving a very thin integrated circuit (IC) die, voids in the die attach film (DAF) adhesive were observed. This paper presents the modeling study conduc...

Open access Research Article 10.9734/jerr/2021/v20i217269

Die Placement Advancement for Prevention of Silhouetted Die Occurrence on LGA Package

Rennier Rodriguez, Frederick Ray Gomez & Edwin Graycochea Jr. · Journal of Engineering Research and Reports · 2021

In semiconductor packaging industry, silhouetted die defect is occasionally encountered in singulation process esp. on substrate land grid array (LGA) package with tight clearances. This paper is focused on the prevention of the silhouetted die occurrence as it would affect the a...

Open access Research Article 10.9734/jerr/2021/v20i217270

Fracture Strength Characterization of the Die Active Side and Back Side for a Realistic Die Crack Assessment

Jefferson Talledo · Journal of Engineering Research and Reports · 2021

This paper discusses the characterization of an integrated circuit (IC) silicon die fracture strength to have a realistic die crack assessment. The evaluation was conducted using a 3-point bend test setup to measure the die strength of actual IC dies. Both the active side and the...

Open access Research Article 10.9734/jerr/2021/v20i217267

Expanded Usage Window of Molding Compound to Reduce Material Wastage in Manufacturing Line

Roland Soriano, Lester Joseph T. Belalo & Rey Nino C. Arnido · Journal of Engineering Research and Reports · 2021

This paper discusses about direct material wastage brought by expiring molding compound particularly for QFN-mr Packages. An Engineering problem solving methodology was used to identify the material, its consumption, cost, the root cause, and solution of the problem. The study ai...

Open access Research Article 10.9734/jerr/2021/v20i217266

Quantitative Analysis of Geomorphologic Characteristics for Surface Runoff Determination in Amala River Catchment in Kenya

Samuel M. Kinyanjui, Japheth O. Onyando & Raphael M. Wambua · Journal of Engineering Research and Reports · 2021

Hydrological response of a catchment is a function of rainfall as influenced by catchment characteristics comprising geomorphology, land cover, and management practices. In this study, the analysis mainly focused on how geomorphological characteristics influence the catchment hyd...

Open access Research Article 10.9734/jerr/2021/v20i217268

Variations of the Time to Failure (TTF) for Specific Components in Aeronautical Navigation Systems

Alaa Mohammad Alturki & Ali Muhammad Rushdi · Journal of Engineering Research and Reports · 2021

Aeronautical navigation systems installed at specific locations within Saudi Arabia report the actual observed data of the times to failure (TTFs) for many types of engineering elements made by some typical international highly-acclaimed manufacturers. There is a need to compare...

Open access Research Article 10.9734/jerr/2021/v20i217265

“Rey Resin Dispense Pattern” A Solution to Package Voids Defect on Thinner Package Thickness in Compression Mold

Lester Joseph T. Belalo & Rey Nino C. Arnido · Journal of Engineering Research and Reports · 2021

This paper will discuss how package voids Mold defect was addressed on thinner Compression mold packages like BGA (Ball Grid Array) and Sensor Devices. Significant action was the application of “Rey Resin Dispense” pattern in compression mold granule compound dispensing was a key...

Open access Research Article 10.9734/jerr/2021/v20i217264

Mathematical Analysis of Uncertainty in Bangladesh Agricultural Sector

Mohammad Khairul Islam, Md. Mahmud Alam & Mohammed Forhad Uddin · Journal of Engineering Research and Reports · 2021

This study presents three different mathematical models for profit optimization of agricultural products in Bangladesh. The prime focus of the paper has been to develop a Mixed Integer Linear Programming (MILP) model and analyze this model for two situation of demand uncertainty....

Open access Research Article 10.9734/jerr/2021/v20i217262

Reliability Evaluation of Rooftop Solar Photovoltaics Using Coherent Threshold Systems

Rudi Uswarman & Ali Muhammad Rushdi · Journal of Engineering Research and Reports · 2021

The trend for use of rooftop solar photovoltaics (PV) is rising due to their promising economic potential as a source of clean renewable energy. In general, a source of renewable solar energy consists of solar PV, an automatic charge controller, a battery pack, and an inverter. T...

Open access Research Article 10.9734/jerr/2021/v20i217263