Indium CW-232 Flux-Cored Wire for Robotic and Laser Soldering
Indium CW-232 Flux-Cored Wire for Robotic and Laser Soldering
Indium Corporation's CW-232 is a highly activated rosin flux-cored wire engineered for robotic and laser soldering applications where fast wetting speed, high throughput, and minimal spatter are critical. It is compatible with both Pb-free and SnPb alloys and works across common PCB surface finishes including HASL, Immersion Silver, ENIG, and OSP. CW-232 also performs well in hand soldering applications where spatter control and residue appearance matter.
CW-232 Specifications & Key Features
| Attribute | Detail |
|---|---|
| Flux Type | Highly activated rosin (RA) |
| Primary Application | Robotic soldering, laser soldering, hand soldering |
| Wetting Performance | Very fast wetting; capable of soldering to heavily tarnished surfaces |
| Spatter Performance | Extremely low spatter (“no-spatter” technology) |
| Residue Appearance | Light-colored residue |
| Alloy Compatibility | Pb-free and SnPb alloys |
| Surface Finish Compatibility | HASL, Immersion Silver, ENIG, OSP |
| Manufacturer | Indium Corporation (founded 1934) |
Why Low-Spatter Flux-Cored Wire Matters in Robotic Soldering
In robotic and laser soldering environments, flux spatter creates three distinct problems: it can burn operators, contaminate or impair the vision systems used by robotic soldering machines, and leave residue that affects the finished product’s appearance and cleanliness. CW-232’s no-spatter formulation addresses all three, making it well-suited for high-throughput automated lines where downtime for cleaning or vision system recalibration is costly.
Frequently Asked Questions
What makes CW-232 different from standard flux-cored wire?
CW-232 combines a highly activated rosin flux with no-spatter technology — a combination not common in standard flux-cored wires. Most RA flux wires prioritize wetting activity but produce more spatter, which is acceptable in hand soldering but problematic in robotic and laser applications. CW-232 is specifically formulated to deliver high wetting speed without the spatter penalty.
Can CW-232 be used on tarnished or oxidized surfaces?
Yes. The highly activated rosin flux in CW-232 is capable of soldering to heavily tarnished surfaces, making it useful in rework and repair scenarios where surface condition is not ideal, as well as in production environments where board storage time has allowed oxidation to develop.
Is CW-232 suitable for hand soldering as well as robotic applications?
Yes. While CW-232 is engineered for robotic and laser soldering, its fast wetting and low-spatter characteristics also make it a strong choice for hand soldering, particularly in environments where operator safety and finished product aesthetics are priorities.
What surface finishes is CW-232 compatible with?
CW-232 is compatible with HASL (Hot Air Solder Leveling), Immersion Silver, ENIG (Electroless Nickel Immersion Gold), and OSP (Organic Solderability Preservative) — covering the most common PCB surface finishes used in electronics manufacturing.
To order CW-232 or discuss your soldering application, contact us at info@mtesolutionsinc.com.
