NP545 Lead-Free Solder Paste

Kester NP545 Solder Paste is a zero-halogen, lead-free, no-clean solder paste formula designed for consistency and repeatability. NP545 is extremely stable and has an unrefrigerated shelf life of 12 months with no print or solderability degradation. NP545 consistently delivers paste transfer efficiencies of 0.55 to 0.5AR. The paste is also fully capable of printing and reflowing 01005 components, even in air reflow, with minimal graping behavior. NP545 is classified as ROL0 under IPC JSTD-004 and ROM0 under IPC JSTD-004B.

• Consistent print performance to 0.5AR
• Wide reflow profile window with good solderability
• Excellent shelf life, 1 year in both refrigerated and room temperature
• Exceptional printing reflow performance across a wide range of print and reflow process conditions
• Room temperature storage stability makes it excellent for a low volume / high mix type of manufacturing
• Low QFN/BGA voiding
• Excellent cosmetics and a clear residue

NP545 Leaded Solder Paste

Kester NP545 Solder Paste is a no-clean, zero-halogen solder paste formula designed for consistency and repeatability. NP545 consistently delivers paste transfer efficiencies of 0.55 to 0.50 AR. This paste is also fully capable of printing and reflowing 01005 components, even in air reflow, with minimal graping behavior. NP545 is classified as ROL0 under IPC JSTD-004 and ROM0 under IPC JSTD-004B. NP545 is has been developed as a SnPb alloy solder paste can used in backward applications and is thus fully compatible for soldering complex lead-free component on SnPb assemblies.

• Classified as ROL0 under IPC JSTD-004 and ROM0 under IPC JSTD-004B
• Zero-Halogen (none intentionally added)
• Consistent print performance to 0.5AR
• Excellent cosmetics and a clear residue
• Can be used in backward applications
• Fully compatible for soldering complex lead-free components on SnPb assemblies