Flux, Flux Remover

Image	Part Number	Description / PDF	Quantity	Rfq
	63-0002-3060 Kester	NF1060-VF SOLDERING FLUX 1 GAL	0
	1334251 LOCTITE / Henkel	FLUX - NO CLEAN	0
	1124343 LOCTITE / Henkel	LOCTITE MF300 55GAL DRUM	0
	64-0002-3060 Kester	NF1060-VF SOLDERING FLUX 5 GAL	0
	70-4001-0003 Kester	SOLDER FLUX RF550 HAL-FREE 30GM	0
	65-0002-3060 Kester	NF1060-VF SOLDERING FLUX 53 GAL	0
	70-2501-0003 Kester	SOLDER FLUX RF741 NO CLEAN 30GM	0
	64-0000-0977 Kester	977 SOLDERING FLUX 5 GAL	0
	70-2601-0003 Kester	FLUX - WATER SOLUBLE SYRINGE 30G	0
	65-0000-0979 Kester	979 SOLDERING FLUX 53 GAL	0
	6300010952 Kester	FLUX NO CLN LOW SOLID	0
	760088 LOCTITE / Henkel	FLUX - NO CLEAN PEN	0
	891672 LOCTITE / Henkel	FLUX - WATER SOLUBLE LEAD FREE	0
	63-0000-0979 Kester	979 SOLDERING FLUX 1 GAL	0
	1124342 LOCTITE / Henkel	LOCTITE MF300 5GAL BOX	0
	65-0000-0977 Kester	977 SOLDERING FLUX 53 GAL	0
	70-2501-0004 Kester	SOLDER FLUX RF741 NO CLEAN 100GM	0
	1893165 LOCTITE / Henkel	LOCTITE HF108 RWF EFD 10CC SYRIN	0
	3401-G Techspray	PWR-4 FLUX REMOVER	0
	63-0000-0977 Kester	977 SOLDERING FLUX 1 GAL	0

Flux, Flux Remover

1. Overview

Flux and flux remover are critical materials in electronic manufacturing processes. Flux is a chemical agent used to remove oxidation from metal surfaces during soldering, enabling better solder wetting and joint formation. Flux remover (or flux cleaner) is a chemical solution designed to eliminate flux residues and contaminants from printed circuit boards (PCBs) after soldering. These materials ensure reliable electrical connections, prevent corrosion, and maintain product quality in modern electronics manufacturing.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Rosin-based Flux	Non-corrosive, low residue, compatible with lead-free and tin-lead solder	Consumer electronics assembly
Water-soluble Flux	High activity, easily removed with water-based cleaning	Automotive electronics with high reliability demands
No-clean Flux	Low residue formulation eliminating post-soldering cleaning	High-density PCB assembly
Organic Acid Flux	Strong oxide removal capability for difficult-to-solder surfaces	Industrial control equipment manufacturing
Solvent-based Remover	Fast evaporation, effective for rosin residues	Aerospace component maintenance
Water-based Remover	Environmentally friendly, meets RoHS/REACH standards	LED lighting production

3. Structure and Composition

Flux Composition:

Activators (e.g., organic/inorganic acids): Enhance metal wetting by removing oxides
Solvents (e.g., glycols, esters): Control viscosity and evaporation rate
Resin (e.g., colophony): Form protective layer against re-oxidation
Additives (e.g., surfactants): Improve thermal stability

Flux Remover Composition:

Base solvents (e.g., hydrocarbons, alcohols): Dissolve flux residues
Surfactants: Reduce surface tension for better penetration
Corrosion inhibitors: Protect metal surfaces during cleaning

4. Key Technical Specifications

Parameter	Description	Importance
Activation Temperature	100-350 C range	Determines compatibility with soldering profiles
Residue Conductivity	<1.56 S/cm	Impacts electrical reliability
Flash Point	30-80 C	Safety handling consideration
Cleaning Efficiency	>98% residue removal	Directly affects product yield
Material Compatibility	Pass MIL-STD-883H testing	Ensures no damage to sensitive components

5. Application Fields

Electronics Manufacturing: SMT/BGA assembly, wave soldering
Automotive Industry: Engine control units, sensor modules
Telecommunications: 5G base stations, fiber optic equipment
Aerospace: Avionics systems, satellite components
Medical Devices: Pacemakers, diagnostic equipment

Application Case: In smartphone PCB production, no-clean flux reduces cleaning costs by 40% while meeting IPC-J-STD-001 Class 3 requirements.

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Feature
Alpha Assembly	OM-350	Halogen-free no-clean flux with 0.03% solids
Kester	951CX	Water-soluble flux for high-reliability military applications
Henkel	RID810	Low-odor solvent-based flux remover
Electrolube	FS22	Biodegradable water-based cleaner

7. Selection Recommendations

Match flux type with solder alloy composition
Consider cleaning method (spray, ultrasonic, vapor degreasing)
Evaluate environmental regulations (VOC limits, REACH compliance)
Analyze thermal profile compatibility
Test material compatibility with PCB substrates

8. Industry Trends

Growth in halogen-free and bio-based formulations
Increased demand for ultra-low residue materials (<=0.01% solids)
Development of smart cleaning solutions with IoT-enabled monitoring
Rising adoption of miniaturized component-compatible fluxes
Integration with Industry 4.0 automated dispensing systems