1010 Water-Soluble Wave Solder Flux (1 Gallon)
Water-Wash Fluxes
Before no-clean fluxes became the most commonly used materials in wave soldering, water-wash fluxes had an extended run as the preferred material. The advantage of water wash fluxes is that they can be formulated to be very active so that they can solder virtually any assembly without concern for reliability since the residue will be removed after the soldering process. The disadvantage of water wash fluxes is that assemblers must have an additional piece of equipment, the water wash system, to remove the flux residue, and must deal with the effluent.
Neutral pH fluxes can generally be left on the circuit board for extended periods of time before washing, while the "low" pH fluxes generally solder somewhat better.
Wave Solder Flux 1010
Wave Solder Flux #1010 is a versatile VOC-free water-soluble wave flux that provides excellent solderability on difficult-to-solder assemblies. Wave Solder Flux #1010 is biodegradable and cleans to low ionic levels, leaving the assembly with high surface insulation resistance (SIR).
Physical Properties
| Test | Result |
| Color | Clear |
| Specific Gravity @ 25°C (77°F) | 1.055 |
| Specific Gravity @ 15.5°C (60°F) | 1.058 |
| Solids Content | 20% |
| Flash Point (°F TCC) | None |
| J-STD-004A Flux Type | ORH1 |
Process Recommendations
Wave Solder Flux #1010 should be applied by ultrasonic spray for best results. Topside board temperatures can range from 100–150°C (300°F) depending on equipment capability and assembly requirements. Preheat temperature should be adjusted to ensure complete water removal before contact with the solder wave.
A thin uniform flux deposition of 500–1,000 micrograms per square inch of flux solids should be applied as a starting point.
Because Wave Solder Flux #1010 is water-based, it does not require frequent acid value monitoring. If thinning is required, deionized water should be used.
Wave Solder Flux #1010 may freeze if exposed to temperatures below 0°C (32°F). If the flux becomes frozen, bring to room temperature until thawed and agitate. The material is not affected by freezing.
Flux residue cleans best in water 49–60°C (120–140°F). A final rinse in deionized water will produce the best results.