.... Design/methodology/approach Sn-5Sb-CuNiAg solder balls (750 µm in diameter) were spread and wetted on 40 × 40 × 1 mm copper plates, in different fluxes, soldering temperatures and time. The contact angles were obtained by a home-made measuring instrument. The samples were polished and deep etched before...

... of different types of fluxes. Design/methodology/approach Solder pastes were prepared by mixing SAC305 solder powder with different flux and different wt.% of carbon nanotube (CNT). Fourier transform infrared spectroscopy was used to identify functional groups from different fluxes of as-formulated solder...

...Flavia V. Barbosa; José C.F. Teixeira; Senhorinha F.C.F. Teixeira; Rui A.M.M. Lima; Delfim F. Soares; Diana M.D. Pinho Purpose The aim of this paper is to characterize the rheological properties of the flux media exposed to different levels of solicitation and to determine its influence...

...Ervina Efzan Mhd Noor; Ayodeji Samson Ogundipe Purpose This paper aims to investigate the effect different fluxes have on the mechanical properties of lead-free solders, specifically Sn-Zn-Bi solder alloy. The solder billets were soldered in between copper substrates and flux was applied...

...Kamila Piotrowska; Morten Stendahl Jellesen; Rajan Ambat Purpose The aim of this work is to investigate the decomposition behaviour of the activator species commonly used in the wave solder no-clean flux systems and to estimate the residue amount left after subjecting the samples to simulated wave...

...Kanlaya Phaphon; Sumrit Wacharasindhu; Amorn Petsom Purpose This study aims to synthesize polyethylene glycol (PEG)-rosin derivatives from rosin and PEG for the production of solid soldering fluxes. The PEG-rosin derivatives would be water soluble, and the resulting solid soldering fluxes would...

...Vadimas Verdingovas; Morten Stendahl Jellesen; Rajan Ambat Purpose – This paper aims to investigate the effect of no-clean flux chemistry with various weak organic acids (WOAs) as activators on the corrosion reliability of electronics with emphasis on the hygroscopic nature of the residue...

... of soldering processes. Typical solder flux residue distribution pattern, composition and concentration are profiled and reported. The effect of such contaminants on conformal coating was tested. Design/methodology/approach – Presence of localized flux residues was visualized using a commercial residue...

...Dr Agata Skwarek; Marek Koscielski; Janusz Sitek Purpose – The purpose of this paper is to investigate the influence of the properties of new compositions of fluxes for selective soldering on lead-free solder joints quality and microstructures as well as showing which flux properties are the most...

...A.E. Marks; N.N. Ekere; S. Mallik; R. Bhatti Purpose The purpose of this paper is to investigate how the formulation of a solder paste (with regards to the flux and particle size distribution (PSD)), can influence its creep and recovery performance. Design/methodology/approach New lead‐free...

... practice for ionic contamination detection limits. Design/methodology/approach PCBAs were subjected to different flux residue cleaning dwell times and cleanliness levels were verified with resistivity of solvent extract, critical cleanliness control (C3) test, and ion chromatography analyses to provide...

...Patrick Zerrer; Andreas Fix; Matthias Hutter; Herbert Reichl Purpose The purpose of this paper is to develop a new alloying method for solders by using a metal organic modified flux in solder pastes. Design/methodology/approach This paper presents the impact of six metal organic compounds (Co...

...R. Durairaj; S. Mallik; N.N. Ekere Purpose The purpose of this paper is to develop a quality control tool based on rheological test methods for solder paste and flux media. Design/methodology/approach The rheological characterisation of solder pastes and flux media was carried out through...

... © Emerald Group Publishing Limited 2005 --> Flux AIM introduces 270WR VOC-free lead-free compatible wave solder flux Keywords: Flux AIM has introduced 270WR, a VOC- free, no-clean liquid flux formulated to offer a broad process window for lead- free and tin-lead...

...   Plate 2 Ecosol® MF101 from Multicore The flux's wide operating window is achieved by the thermally stable activator package being able to combine with the VOC-free carrier material(water). As a result, the flux remains more active throughout the wave soldering process, even...

...Tim Lawrence; Ian Wilding; Balvinder Chowdhary This paper outlines the current position of water based no‐clean liquid fluxes for wave soldering. The primary differences between these and “traditional” alcohol based liquid fluxes are explored using wetting balance methods. Reduced wetting...

...Ling Zou; Christopher Hunt SIR testing is in practice carried out under a wider range of experimental conditions than those detailed in standards. The work presented here explores some of the issues when using a range of fluxes with various processing conditions and also examines the influence...

...L. Zou; M. Duˇsek; C.P. Hunt; B.D. Dunn The efficiency of cleaning of flux residues after various periods of ageing was assessed by measuring the ionic contamination removed in an Ionograph 500 SMD. The flux residues were removed from bare boards, and boards with through hole and surface mount...

... when using a typical resin flux, a weak organic flux and glycol based fluxes when sampling SIR patterns every ten minutes. Results indicate that some fluxes are very sensitive to the test temperature, with volatilisation of flux residues an important issue. The frequent monitoring of the results also...

... © MCB UP Limited 1999 --> Flux Heraeus No-clean Soldering New no-clean, low solids liquid fluxes from Heraeus ready to use in air and nitrogen wave soldering applications Keywords Flux, Heraeus, No-clean, Soldering A high-performance solution, Surf 11 provides...