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SMTA International to Address QFN Assembly & Reliability

Industry News | 2011-09-14 12:04:43.0

The SMTA announced a session on QFN Assembly and Reliability will take place on Tuesday, October 18 during their annual conference, SMTA International, in Ft. Worth, Texas. Andrew Mawer of Freescale Semiconductor will chair the session and Viswam Puligandla, Ph.D., Nokia (Retired) will co-chair.

Surface Mount Technology Association (SMTA)

I.C.T SMT Vacuum Reflow Oven Machine

Industry News | 2022-10-13 07:44:15.0

I.C.T SMT Vacuum Reflow Oven Machine helps you to solve the problem of High Solder Voids Rates

Dongguan Intercontinental Technology Co., Ltd.

Solder Paste Qualification Testing - SMTA Webinar

Events Calendar | Wed Mar 07 00:00:00 EST 2018 - Wed Mar 07 00:00:00 EST 2018 | ,

Solder Paste Qualification Testing - SMTA Webinar

Surface Mount Technology Association (SMTA)

IPC-A-600 Specialist (CIS) Certification Training Course

Training Courses | | | IPC-600 Specialist (CIS)

The Certified IPC-600 Specialist (CIS) training targets quality assurance and acceptance of bare printed circuit boards.

ACI Technologies, Inc.

Technical Presentations at the Upcoming SMTA Capital Chapter Expo on August 23rd

Industry News | 2018-08-16 19:58:50.0

The SMTA Capital Chapter is holding its upcoming Capital Expo and Tech Forum at Johns Hopkins University / Applied Physics Lab, Kossiakoff Center, 11100 Johns Hopkins Road, Laurel, MD 20723, on Thursday, August 23rd.

Surface Mount Technology Association (SMTA)

Webinar: QFN/LGA Design, Assembly Process Issues & Reliability Failures

Events Calendar | Mon Dec 02 00:00:00 EST 2019 - Mon Dec 02 00:00:00 EST 2019 | ,

Webinar: QFN/LGA Design, Assembly Process Issues & Reliability Failures

Surface Mount Technology Association (SMTA)

SMTA Capital Chapter’s Expo and Tech Forum to be Held on August 22nd

Industry News | 2019-07-09 19:58:49.0

The SMTA Capital Chapter is pleased to invite you to its upcoming Capital Expo and Tech Forum at Johns Hopkins University / Applied Physics Lab, Kossiakoff Center, 11100 Johns Hopkins Road,Laurel, MD 20723, on Thursday, August 22nd.

Surface Mount Technology Association (SMTA)

A Non-destructive Approach to Identify Intermittent Failure Locations on Printed Circuit Cards (PCC) that have been Temperature Cycle Tested

Technical Library | 2020-12-07 15:26:06.0

Temperature cycling testing is a method of accelerated life testing done to PCCs that are exposed to normal operation temperature variations over its lifetime. During the testing, intermittent "open" failures can first occur at the hot and cold extremes of the test, exposing weaknesses in the design and assembly. A poor/weak solder joint fatigues, a via trace or barrel cracks, loose connections or a component fails all causing an intermittent open. When not at extreme temperatures, the PCC assembly relaxes, the "open" closes creating electrical connectivity. If you are monitoring the PCC under test in-situ you will know that an intermittent failure has occurred, and the test could be stopped for inspection. If in-situ monitoring was not implemented, you would not know if there were intermittent failures or not. The PCC gets powered up and works fine at room temperature.

ACI Technologies, Inc.

Advanced Solder Paste Dispensing

Technical Library | 2008-10-15 20:16:12.0

Solder paste dispensing is usually considered a slow process. Due to the speed advantages, screen printing is used to apply solder paste whenever possible. However, screen printing is not always an option. Leveraging the high speed of piezo drive technology opens the door to a broad range of solder paste dispensing applications. The ability to dispense dots under 300-μm diameter, even as small as 125 μm, enables BGA rework, small geometry deposits for miniaturized passive components, electrical connections in recessed cavities, and RF shield attach for handheld devices.

ASYMTEK Products | Nordson Electronics Solutions

Ball Grid Array (BGA) Voiding Affecting Functionality

Technical Library | 2020-11-09 16:59:53.0

A customer contacted ACI Technologies regarding a high failure rate of their assemblies. They provided assemblies to be X-rayed and inspected for the purpose of identifying any process related issues such as (but not limited to) solder and assembly workmanship and evidence of damage due to moisture related problems during reflow (a.k.a. "popcorning"). Moisture damage usually appears as physical damage to the component. The first indication of moisture damage would be externally observable changes to the package in the form of bulging or fractures to the outer surface of the component, an example of which is shown in Figure 1. Internally observable indicators of moisture damage typically include fractures to the die inside the package and lifted or fractured wire bonds. These conditions would be apparent during transmissive X-ray inspection. Another symptom of moisture related damage would be inconsistent solder joint sizes that result from package deformation during the liquidus phase of the reflow process. None of these indicators of moisture related damage were present on the customer samples.

ACI Technologies, Inc.


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