Technical Library: solder splatter (Page 1 of 1)

Key Advances in Void Reduction in the Reflow Process Using Multi-Stage Controlled Vacuum

Technical Library | 2020-01-28 00:23:58.0

This paper explores new advances in the reflow soldering process including vacuum technology and warpage mitigation systems. The first topic for discussion will be the implementation of a vacuum process directly in a conventional inline soldering system. The second topic presented is the mitigation of warpage on substrates or wafers.

Heller Industries Inc.

Selective Solder Fine Pitch Components On High Thermal Mass Assembly

Technical Library | 2020-04-14 15:49:38.0

The number of through-hole components on printed circuit boards (PCB) has declined significantly over the last decade. Miniaturization in electronics has resulted in less THT (through-hole technology) and leads with a finer pitch. For this reason, the soldering of these components has also changed from wave soldering to Point-to-point selective soldering. Soldering these small, fine-pitch components is a challenge when surface mount components (SMD) are positioned very close to THT components on the PCB layout. This study, done in cooperation with a large automotive EMS customer, defines the process windows for through-hole technology for fine-pitch components. It determines what is feasible to solder and defines layout design parameter that make soldering possible with SMD areas and other components on the assembly.

ITW EAE

Characteristics of Conformal Coatings

Technical Library | 2007-08-28 20:18:06.0

A conformal coating is defined as a thin polymeric material which covers the surface of an electronic assembly. These coatings are used to provide an electrically insulative and environmentally protective seal or cover to a completed printed circuit board (PCB).

Electronics Manufacturing Productivity Facility (EMPF)

Optimizing the Wave Soldering Process with Hot Nitrogen Knives

Technical Library | 1999-04-29 15:39:03.0

The paper describes the effects of a debridging knife on inerted soldering environments in an Electrovert Econopak wave solder machine. It reviews experiments to improve the purity of the soldering environment and results of the tests.

Siemens Process Industries and Drives

SMT Process Recommendations Defect Minimization Methods for a No-Clean SMT Process

Technical Library | 1999-05-07 11:35:19.0

Key competitive advantages can be obtained through the minimization of process defects and disruptions. In today's electronic manufacturing processes there are many variables to optimize. By gaining an understanding of what the defects are, and where they come from, is a key step in the process towards defect free/six sigma manufacturing. In the last decade, Surface Mount Technology processes have been slowly converting towards the No-Clean philosophy. This new trend has spawned new processing issues which need to be addressed. This paper will investigate solutions to current problems in the processing of No-Clean SMT processes.

Kester

Manufacturing Considerations When Implementing Voc-Free Flux Technology

Technical Library | 1999-05-07 11:44:26.0

In 1990 the United States Environmental Protection Agency Issued the Clean Air Act. The Clean Air Act and subsequent amendments are designed to limit the use of chemicals that contain volatile organic compounds (VOCs). The document goes into great detail setting limits for allowable VOC emissions for different industries.

Kester

SMT Line Improvements for High Mix, Low Volume Electronics Manufacturing

Technical Library | 2011-08-04 19:29:53.0

This work covers two major projects aimed at increasing quality and efficiency on a high mix, low volume surface mount electronics production line. Specifically the installation of a ten zone reflow oven and an enhanced changeover method for SMT pick and

Auburn University

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