EM907 Solder Paste, Sn96.5Ag3.0Cu0.5, No-Clean, Lead-Free, 500g Jar
Kester EM907 is a lead-free, air and nitrogen-reflowable, no-clean solder paste specifically designed for the thermal requirements of lead-free alloys, including the SAC305 alloy. The paste flux system allows joint appearances that closely resemble those achieved with SnPb alloys. EM907 is capable of stencil printing downtimes of up to 60 minutes with an effective first print down to 20 mils without any kneading. EM907 also exhibits excellent continual printability for fine pitch (0.4mm/16 mils) and is able to print at high speeds up to 6 in/s (150 mm/s).
Performance Characteristics:
- Lead-free joints that closely resemble those achieved with SnPb solder paste
- Excellent solderability to a wide variety of surface metallizations, including NiAu, ImSn, and ImAg
- High print speeds up to 150 mm/s
- Capable of 60-minute break times in printing
- Stencil life: 12+ hours (process dependent)
- Excellent printing characteristics to 16 and 20 mils pitch
- Excellent print and reflow characteristics for 0201 applications
- Stable tack life
- Classified as ROL1 per J-STD-004, J-STD-004A & J-STD-004B
Standard Applications:
88.5% Metal: Stencil PrintingRoHS Compliance
This product meets the requirements of the Restriction of Hazardous Substances (RoHS) Directive, 2015/863 for the stated banned substances.
Availability
EM907 is available in the Sn96.5Ag3.0Cu0.5 and Sn96.5Ag3.5 alloys. Type 3 powder mesh is normally recommended, but type 4 is available for fine-pitch applications. EM907 is also compatible with other SnAgCu alloys in a similar melting range to the listed alloys. The appropriate combination depends on process variables and the specific application.
Cleaning
EM907 is a no-clean formula. The residues do not need to be removed for typical applications. Although EM907 is designed for no-clean applications, its residues can be easily removed using automated cleaning equipment (in-line or batch) with a variety of readily available cleaning agents. Call Kester Technical Support for details.