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Kester EM919G solder paste – engineered for high-speed SMT printing, offering stable viscosity, precise deposition, excellent wetting, and reliable solder joint performance for fine-pitch, high-density electronic assemblies.

  • Item Number: EM919G

  • Manufacturer: Kester®

  • Lead Type: Lead-Free (RoHS compliant)

  • Alloys: SAC305 (Sn96.5/Ag3.0/Cu0.5)

  • Type: No-clean solder paste

  • Package: Contact to Techniq VN for details.

  • Shelf Life: Contact to Techniq VN for details.

1. Product Overview

Kester EM919G is a high-performance, lead-free solder paste engineered for fine-pitch and high-density surface mount assemblies. It delivers exceptional wetting, superior solder joint formation, and consistent reliability across diverse production environments. The paste is formulated to leave minimal, non-corrosive residues, making it ideal for no-clean processes and environmentally compliant electronics manufacturing.

2. Applications

EM919G is optimized for surface mount technology (SMT) applications, including BGAs, QFNs, and other fine-pitch components. It is suitable for stencil printing, rework, and repair operations, providing precise control over solder deposition. Its excellent rheology ensures high-quality, repeatable results in high-volume production lines.

3. Typical Properties – Specifications

  • Alloy Composition: SAC305 (Sn96.5/Ag3.0/Cu0.5)

  • Flux Type: No-clean, halogen-free

  • Viscosity: Optimized for stencil printing and dispensing

  • Residues: Minimal and non-corrosive, compatible with no-clean process

  • Print Life: Extended stencil life under normal production conditions

  • Reflow Profile: Suitable for lead-free reflow temperature profiles

  • Storage: Refrigerated storage recommended to maintain consistency and performance

BERGQUIST microTIM mTIM 1028 Thermal Interface Coating High performance thermal management solution for nickel finished heat sinks, optical transceivers, and data center liquid cooling systems

BERGQUIST microTIM mTIM 1028 is purpose built for riding cage assemblies in servers, switches, and routers, interfacing with electroless nickel plated copper or aluminum heat sinks. It ensures stable operation in high power transceiver modules while also extending applicability to liquid cooling components, heat pipes, and fin based dissipative structures.

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