StayClean-AWater-soluble Additive
Prevents particle adhesion during dicing
Cutting water additive to prevent particle adhesion
Particle adhesion is a frequently encountered issue in workpieces with higher water repellency than silicon wafers, such as image sensors with a resin film attached. StayClean-A prevents the workpiece from drying out, and substantially lowers the adhesion of particles by impairing their settling speed.
Low environmental burden
StayClean-A does not include any regulated chemicals, such as substances covered under the RoHS directive or PFOS. Furthermore, StayClean-A can be used in the same environment※ as normal dicing.
※If your cutting water is being circulated, please contact your DISCO sales representative.
Mechanism
StayClean-A lowers the settling speed of the contamination and prevents adhesion by creating rising air bubbles in the cutting water.
Effect of particle adhesion prevention
*Nozzle + side flow nozzle + chuck table water curtain
StayClean Injector
By using the injector developed exclusively for StayClean, stable supply is possible even at concentrations more dilute than one part per thousand.
Specifications
| Specification | Unit | StayClean-A | StayClean Injector |
|---|---|---|---|
| Solution appearance | - | Transparent colorless and light yellow liquid | |
| Main ingredient | - | Nonionic surfactant + water soluble polymer macromolecule | |
| pH（undiluted） | pH | 7.5 - 9.5 | |
| Density（15℃） | g/cm3 | 1.0 - 1.02 | |
| Residue/decomposition | mg/L | COD 56(JIS K0102-17) | |
| (when diluted 1000 times) | mg/L | BOD 62(JIS K0102-21) | |
| Recommended dilution | times | 1,000 - 2,000(0.1 - 0.05%) | |
| Power supply , voltage | V | AC90-230 Single Phase 50/60 Hz | |
| Supply water temperature | deg C | 20 - 25 | |
| Supply water pressure | MPa | 0.2 - 0.5 | |
| Process flow rate | L/min | 2 - 20 | |
| Additive injection rate | % | 0.1 - 0.01(1,000 - 100 ppm) | |
| Equipment dimensions(W×D×H) | mm | Injector 200 × 300 × 500 excluding projections Bottle stocker 357 × 392 × 440 excluding projections |
|
| Equipment weight | kg | Injector Approximately.22(Dry mass) Bottle stocker Approximately.10(Dry mass) |
Cautions before using StayClean-A
- Make sure to read the SDS before using StayClean-A because it describes detailed care regarding its use.
- Do not use StayClean-A for any unintended use.
Cautions regarding the use of StayClean-A
- Take care that it does not touch your eyes or skin, wear appropriate protective equipment such as gloves and glasses when handling it.
- Avoid using it in conjunction with other chemical agents (in particular strong acids or strong alkalines).
Cautions regarding StayClean-A storage
- Avoid exposure to direct sunlight and store in a cool dark place. Do not place it in a freezer.
- Seal the container properly before storing it.
- With the container still sealed, the warranty period is one year from the date of manufacture.
StayClean-AWater-soluble Additive
Contact
Please feel free to contact us with any questions or inquiries.