Technical Presentation: Evaluation of Stencil Materials, Manufacturing Processes and Coatings
The SMT stencil market has a slew of new options in foil materials, coatings and cutting technologies, all of which promise to improve the solder paste printing process. Which of these options really do help assemblers keep yields up and costs down, and which don’t?
Last summer, two veteran process engineers set up an independent print study to find out. Ray Whittier of Vicor and Chrys Shea of Shea Engineering Services examined 13 pairs of stencils, made from 4 different materials/manufacturing methods in two thicknesses, supplied by 4 vendors. Each pair of stencils was theoretically identical; one had a do-it-yourself nanocoating applied and one didn't. The test vehicle, a challenging production board chock full of microBGAs and 0201s, packed almost 15,000 miniaturized apertures into a 3x7" area.
- Which material was better – electroformed nickel or rolled stainless steel?
- Which manufacturing process was superior – plating or laser cutting?
- Does nano coating really work?
- Are the most expensive stencils the best? Are the cheapest ones the worst?
Come find out at the next SMTA Boston Chapter meeting! Chrys Shea will be presenting the results on January 24th at Chung King Rick's Café in Billerica, MA
Presentation Speaker: Chrys Shea of Shea Engineering Services
Speaker's Bio: Chrys Shea is the founder and owner of Shea Engineering Services, a consulting firm that serves the electronics manufacturing industry. Prior to launching Shea Engineering, Chrys spent nearly 20 years working in various PCB assembly process engineering and management roles for Compaq Computer, Texas Instruments, Siemens, Motorola, and Cookson Electronics. Chrys began publishing her research on wave soldering in 1998. Since then, her work has spanned a wide range of SMT, wave soldering and PCB fabrication topics. With over 200 technical publications to her credit, Chrys is a frequent presenter and instructor at SMTA functions and IPC international conferences, and a two-time recipient of the SMTA International “Best of Conference” award.
Date: Tues., January 24th, 2012
Location: Chung King Rick's Cafe 446 Boston Road, Billerica, MA O'Connor True Value Hardware Plaza (978) 262-9922
Chinese Buffet Dinner Cost: $25.00 SMTA Members, $30.00 Non-Mbrs, Cash or checks made payable to SMTA
- 5:30 - 6:00 PM Sign-In, Socializing, Networking & Cash Bar
- 6:00 - 7:00 PM Buffet Dinner
- 7:00 - 7:15 PM Upcoming Meeting Announcements
- 7:15 - 9:00 PM Technical Presentation, Discussion & Questions
Directions: Take Rt. 3 from either the North or South and then take Concord Rd exit, EXIT 27, toward Billerica. Follow Concord Rd toward Billerica and take slight right onto Cummings St which brings you right into Billerica Center. At town center, go across Rt. 3A into O'Connor True Value Hardware Plaza. Rick’s is in the center of that strip mall.
Please RSVP ONLINE by Friday, January 20th at absolute latest.
If you make a reservation & can't come, pls. let us know by Mon., January 23rd at noon or the chapter gets billed for your meal! Email Mike Sivigny at firstname.lastname@example.org to notify.
If you have any questions pls. contact SMTA: Mike Jansen, Chapter President at Textron Systems, 978-657-1208
To RSVP, please visit: www.smta.org/chapters/rsvp.cfm?BEE_ID=2725&BULK_EMAIL_NO=2