SMT, PCB Electronics Industry News

SEHO's Christian Ott to Present Paper on Voiding at APEX 2012

Jan 26, 2012

Christian Ott

Christian Ott

SEHO Systems GmbH, a worldwide leading manufacturer of automated soldering systems and customer-specific solutions, announces that Christian Ott will present a paper titled “Reduction of Voids in Solder Joints: An Alternative to Vacuum Soldering” during the Voiding 1: Process and Test Technical Session on Tuesday, February 28, 2012 from 1:30-3 p.m. at the San Diego Convention Center in San Diego, CA. The paper, authored by Rolf Diehm, Mathias Nowottnick and Uwe Pape, will discuss voids in solder joins as one of the main problems for power electronics.

The amount of voids can be influenced by different measures, e. g. a good wettability of metallization, solder pastes with special adopted solvents and an adequate preheating profile. However, a special vacuum process step during soldering is demanded for absolutely void free solder joints. But this vacuum process is associated with some essential disadvantages. Besides of the technical expenses for vacuum pumps and additional locks, the vacuum process excludes the use of gas convection for heating and cooling. Apart from a special vapour phase-vacuum technology, most machines are using infrared radiation or heat conduction for soldering.

The same principles as used in vacuum soldering technology are applicable also for a higher pressure level. If the void in the solder joint is arising for an excess pressure, the normal atmosphere pressure could be sufficient for escaping of enclosed gas. Essential for this effect is the pressure difference between inside and outside of solder joint. A benefit of soldering with excess pressure is the possibility of gas convection for heat transfer. This allows the application of conventional components and the realization of the usual temperature distribution and profiles.

For more information, join us at the presentation of this paper on February 28 at 1:30pm at the San Diego Convention Center, or discuss with us at our booth # 3521.


Since its foundation in 1973, SEHO has become the worldwide contact partner whenever soldering is involved. Company solutions are based on performance, flexibility, efficiency and technical progress. SEHO’s business activities and production organization are oriented according to the principles of sustained future-compatible development and production of machines. As a result, all applicable environmental standards are complied with meticulously. With its systems, the company provides customers with a sustained and resource economizing production facility. It continuously develops its technology in order to provide customers with a competitive advantage. For more information, visit www.seho.de.

May 11, 2017 -

SEHO North America, Inc. to Hold Technology Days in Kentucky

May 10, 2017 -

SEHO PowerWave: The Powerful System for Medium to Large Production Volumes

Apr 26, 2017 -

Participants from all over the world joined SEHO's International Sales Meeting

Apr 22, 2017 -

SEHO Focuses on 100% Process Control

Mar 14, 2017 -

SEHO Technology Days in Mexico

Jan 10, 2017 -

Innovative Machine Technology: SEHO Ensures Higher Productivity at APEX

Sep 22, 2016 -

SEHO’s PowerWave N2 Tunnel Design Ensures High Energy Efficiency

Aug 29, 2016 -

Innovative Machine Technology: SEHO Ensures Higher Productivity at SMTAI

Mar 30, 2016 -

Complete Solutions: SEHO to Make the Entire Production Process Smarter

Mar 24, 2016 -

SEHO to Bring the SelectLine-C to the German Pavilion at NEPCON China

100 more news from SEHO Systems GmbH »

Jun 25, 2017 -

Libra Industries’ Christopher R. Howell Memorial Foundation Awards $20,000 in Scholarships during Annual Golf Outing

Jun 25, 2017 -

SHENMAO Exhibits at IMAPS System in Package June 27-28, 2017 Introducing 3 New Semiconductor Packaging Fluxes

Jun 25, 2017 -

Ersa Brings the ‘Little Big One’ to SMTA Ohio – Award-Winning Selective Solder

Jun 25, 2017 -

Optimal Electronics Releases Process Control and Traceability Solution for Nordson ASYMTEK Applications in Clean Rooms for Sensor Assembly

Jun 25, 2017 -

Inovaxe Partners with Repstronics in Mexico

Jun 22, 2017 -

PNC Inc. Invests in LED Laser Direct Imaging system from Miva Technologies

Jun 22, 2017 -

Addressing The Modulation of Light Output -- High Quality LED Manufacturing

Jun 22, 2017 -

Schleuniger, Inc. Receives 2017 Best of Manchester Award

Jun 21, 2017 -

Inovar Inc. Breaks Ground for New Facility on USU Innovation Campus

Jun 21, 2017 -

PNC Inc. Launches Design Webinar Series

See electronics manufacturing industry news »

SEHO's Christian Ott to Present Paper on Voiding at APEX 2012 news release has been viewed 588 times

PCB machines

SMT Replacement Nozzles