Description

Leveler 135 Cu is a specialized chemical additive designed for high-performance surface treatment and electroplating processes. This product is critical for achieving uniform, defect-free metal deposition, directly impacting production yield and component reliability. It is essential for manufacturers in the electronics, semiconductor, and precision metal finishing industries who require superior planarization and leveling in copper plating baths. The compound is identified by CAS No. 659720-03-3.

Application

• Primary additive in acid copper electroplating baths for printed circuit boards (PCBs) and semiconductor packaging.
• Critical component for achieving superfilling and bottom-up filling of high-aspect-ratio through-holes, microvias, and trenches.
• Enhances throwing power and deposit uniformity in decorative and functional copper plating applications.
• Used in the manufacturing of advanced interconnect structures for integrated circuits (ICs) and chip-scale packaging.
• Improves the surface morphology and mechanical properties of electrodeposited copper for connectors and contacts.
• Employed in research and development for next-generation damascene and dual-damascene processes.

Basic Information

Product Name	Leveler 135 Cu
CAS No.	659720-03-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Copper Plating Leveler 135; Via Fill Additive 135; Acid Copper Leveler; Electroplating Brightener Component; PCB Plating Additive; Superfilling Additive; Bottom-Up Fill Additive; Damascene Process Additive
EINECS	Contact for details

Quality Control

Every batch of Leveler 135 Cu is manufactured and tested under a strict quality management system to ensure consistent performance in critical plating applications. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and performance characteristics are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and organic solvents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to maintain product integrity.

Specification

Item	Specification
Appearance	Clear to slightly colored liquid
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Density (20°C)	Contact for details
Water Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.