Chemtronics Chem-Wik Rosin Desoldering Braid - 7-5L
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Product Information
Full details
The Chemtronics Chem-Wik Rosin Desoldering Braid (7-5L) is a professional-grade desoldering tool designed for electronics technicians and hobbyists who require precise, reliable solder removal. Its primary benefit is the ultra-pure, non-corrosive Type R rosin flux coating, which ensures rapid heat transfer and superior wicking action to prevent heat damage to delicate circuit boards; however, users should be aware that it requires proper iron temperature management to function effectively without scorching the flux.
All features
| Model Part Number | 7-5L |
|---|---|
| Brand | Chemtronics |
Extended Product Information
FAQs
Is this braid suitable for lead-free solder?
Yes, Chem-Wik braid is designed to handle both leaded and lead-free solder applications effectively.
Do I need to clean the board after using this braid?
While the Type R flux is non-corrosive and generally safe to leave on the board, it is professional practice to clean the area with an electronics-grade solvent to remove flux residue for a pristine finish.
How do I know which width of braid to choose?
Select a width that matches the size of the pad or hole you are clearing. The braid should cover the entire joint to ensure complete solder removal.
Does the flux expire?
When kept in a sealed container and stored in a dry, room-temperature environment, the flux remains effective for a long period.
Can this be used on multi-layer boards?
Yes, its ability to wick quickly makes it excellent for multi-layer boards, as it minimizes the heat soak that can cause pad lifting.
Troubleshooting
Braid is not absorbing solder
Ensure the iron tip is clean and properly tinned to allow heat transfer. Increase the iron temperature slightly or ensure the braid is making full contact with the joint.
Flux is smoking excessively
Your iron temperature is likely too high. Lower the setting to the minimum temperature required to melt the solder being removed.
Braid is sticking to the PCB pads
Do not pull the braid while the solder is still molten. Remove the iron and the braid simultaneously only after the solder has fully wicked into the copper.
Pros and Cons
Pros
- Fast-acting wicking speed reduces board exposure to heat
- Non-corrosive flux residue prevents long-term circuit damage
- Precise braid design for delicate component work
- High-purity copper ensures consistent solder absorption
Cons
- Flux can smoke if the iron temperature is set too high
- Requires a steady hand for fine-pitch surface mount components
- Single-use strip necessitates cutting the braid frequently
Setup, Compatibility & Care
To achieve optimal performance, ensure your soldering iron is set to a temperature suitable for the specific solder alloy (usually 650°F to 750°F). Do not force the braid down; let the heat transfer do the work. After each use, cut off the solder-saturated portion of the braid to ensure you are always using a clean, fresh section. Store the spool in a cool, dry environment to maintain the integrity of the flux coating. The braid is compatible with leaded and lead-free solders, provided the iron tip is matched to the thermal demands of the alloy.