What is j std 004?
IPC-J-STD-004 C This standard prescribes general requirements for the classification and characterization of fluxes for high quality solder interconnections. This standard may be used for quality control and procurement purposes.
What is flux activity level?
Fluxes are identified by the activity level of the flux and its residue. The activity level describes the flux’s ability to “clean” (remove oxides and tarnish) from solderable surfaces. Historically, activity was achieved through the addition of halides.
What is ANSI J-STD-001?
IPC J-STD-001 is an individual level certification based on a standard published by IPC titled “Requirements for Soldered Electrical and Electronic Assemblies”. The standard lists requirements for the manufacture of electrical and electronic assemblies and includes materials, methods and verification criteria.
What is resin flux?
Rosin (R) flux is a combination of rosin and solvent best suited for clean and easy-to-solder surfaces. Rosin is hard, not conductive, and general corrosion-resistant. Rosin flux residuals may be left on the assembly or removed with a compatible solvent. Large wires. Only clean and easy-to-solder surfaces.
What is RMA type flux?
Rosin mildly activated (RMA) flux consists of rosin, solvent, and a small amount of activator. Most RMA flux is fairly low in activity and best suited to easily solderable surfaces. IPC classification is usually ROL0, ROL1, ROM0, or ROM1. RMA flux residue is clear and soft. Most are non-corrosive and nonconductive.
What is J STD soldering?
J-STD-001 is a standard issued by IPC for soldered electrical and electronic assemblies. The standard specifies material specifications, process requirements, and acceptability criteria.
What is flux classification?
There are four categories of flux to choose from as defined by Military Specification QQ-S-571E. The names are Rosin (R), Rosin or Resin Mildly Activated (RMA), and Rosin or Resin Activated (RA), and non-rosin or non-resin (AC). In most cases, the AC name has been replaced in industry with WS for Water Soluble.
What is rosin in flux?
Rosin (R) flux is a combination of rosin and solvent best suited for clean and easy-to-solder surfaces. Rosin is hard, not conductive, and general corrosion-resistant. Rosin flux residuals may be left on the assembly or removed with a compatible solvent.
Which flux should I use?
Rosin activated flux cleans best, but will leave a significant amount of residue behind — because of this, rosin activated flux is rarely used. Water soluble flux, also called organic acid flux, is typically made from glycol bases.
What is Type H or M flux?
M = Moderate flux/flux residue activity. H = High flux/flux residue activity.