Indium FLUXWV-84254-5G – 3590-T Alcohol-Based No-Residue Wave Solder Flux (5 Gallon)

• Quantity: 5 Gallon
• Meets Bellcore specification TR-NWT-000078
• Meets IPC J-STD-004 flux type ORL0
• Eliminates the need for cleaning
• Excellent wetting and solderability

Alcohol-based Fluxes

The main advantage of alcohol-based fluxes is that they require less preheat to drive off the solvent before entering the wave. This allows assemblers to run smaller wave soldering machines at a higher throughput rate. It also reduces the concern about flux that has not been completely heated inadvertently transferring to the top side of the circuit board.

Fluxes that have high solids content, as well as higher amounts of halogen, tend to be more heat-stable and solder better with a variety of board types, sizes, and thicknesses. Fluxes with lower solids contents and no rosin tend to be easier to electronically probe-test and have less visually apparent residue. Halogen content is not necessarily an indicator of final circuit board reliability since halogen types vary and rosin in the flux will enhance an assembly’s surface insulation resistance.

3590-T No-Residue

3590-T is a low-solids, non-halide, rosin/resin-free flux designed to eliminate post-cleaning operations. The effective flux activators provide superior solderability of surface mount, mixed technology, and through-hole electronic assemblies.

3590-T has a wide process window with excellent wetting capabilities, leaving no residue and high surface insulation resistance.

Process Recommendations

3590-T is best applied by ultrasonic spray, but can also be applied by foam.

Controlled applications such as flux deposition and uniformity are integral factors when soldering with no-clean chemistry. A flux deposition rate of 500–1,000 micrograms per square inch of flux solids should be applied as a starting point. The ideal topside board temperature is approximately 100°C (210°F). Preheat temperatures can differ based on wave soldering equipment, board thickness, components, and conveyor speed.

3590-T uses 16-3000 Thinner to maintain specific gravity or acid value. Thinner is not required in an enclosed fluxing system.

The acid value should be monitored using a digital titrator when foaming to control flux concentration. To prevent contamination on assemblies in an open fluxing system, periodic replacement of flux is recommended.

Physical Properties

Safety

All fluxes with low flash points should be handled with caution. Store in a dry, well ventilated area away from sparks, flames, and direct heat. Consult Safety Data Sheet for full details.