Evaluation, Selection and Qualification of Replacement Reworkable Underfill Materials
Published: |
February 27, 2019 |
Author: |
Jeffrey Colish, Luis Lopez, Carlo Viola |
Abstract: |
A study was performed to investigate, evaluate and qualify new reworkable underfill materials to be used primarily with ball grid arrays (BGAs), Leadless SMT devices, QFNs, connectors and passive devices to improve reliability. The supplier of the sole source, currently used underfill, has indicated they may discontinue its manufacture in the near future. The current underfill material is used on numerous circuit card assemblies (CCAs) at several sites and across multiple programs/business areas. In addition, it is used by several of our contract CCA suppliers. The study objectives include evaluation of material properties for down select, dispensability and rework evaluation for further down select, accelerated life testing for final selection and qualification; and process development to implement into production and at our CCA suppliers. The paper will describe the approach used, material property test results and general findings relative to process characteristics and rework ability.... |
|
Company Information:
More articles from Northrop Grumman Corporation »
- Sep 12, 2018 - Counterfeit Electronic Components Identification: A Case Study
- See all SMT / PCB technical articles from Northrop Grumman Corporation »
More SMT / PCB assembly technical articles »
- Jan 17, 2023 - Introducing Closed-loop Nitrogen Control To Solder Reflow | Heller Industries Inc.
- Jan 17, 2023 - How Challenging Conventional Wisdom Can Optimize Solder Reflow | Heller Industries Inc.
- Jan 17, 2023 - The User Benefits of a Supplier Partnership | Heller Industries Inc.
- Jan 17, 2023 - Vacuum Fluxless Reflow Technology for Fine Pitch First Level Interconnect Bumping Applications | Heller Industries Inc.
- Jan 17, 2023 - Flux Management | Heller Industries Inc.
- Browse Technical Library »
Evaluation, Selection and Qualification of Replacement Reworkable Underfill Materials article has been viewed 807 times