Catalogs >
Nordson Adhesive Dispensing >
Solder-Paste-Solutions-Nordson-ASYMTEK-2011

Solder-Paste-Solutions-Nordson-ASYMTEK-2011
4Pages

Catalog excerpts

Solder-Paste-Solutions-Nordson-ASYMTEK-2011 - 1

Solder paste is dispensed for a variety of applications and on many types of surfaces: printed circuit boards, IC packages, MEMs devices, and electrical components. It is an alternative when screen printing is not possible. For years, Nordson ASYMTEK has worked with customers to develop good processes for solder paste dispensing. Automated dispensing can be trouble free if the paste is formulated correctly, the proper dispensing technology is used, and the equipment is set up properly. Most of the techniques and best practices for dispensing solder paste apply equally to lead-free pastes and pastes containing lead. Solder paste dispensing offers several advantages over screen printing. It overcomes the limitations of screen printing especially when the PCB is too warped or contains big and small components. Dispensing replaces micro stencils for rework. Dispensing is also good for solder paste patterns that require large volumes, like RF shield attach as well as lesser volumes for small-geometry passives. Dispensing solutions are available for a wide range of operations including high-mix, low-volume production, labs and research and development (R&D). Nordson ASYMTEK offers systems that successfully dispense solder paste for these applications.

Open the catalog to page 1

Solder-Paste-Solutions-Nordson-ASYMTEK-2011 - 2

Understanding important facts helps ensure a robust solder paste dispensing process Solder paste consists of solder powder and liquid flux. The powder is specified by the metal alloy and the size of the powder particles. Typical alloys contain a combination of lead, tin, silver, bismuth, indium, and other alloys. The alloys are chosen for their physical and chemical properties for a specific application, but the alloy can also affect the Dispensable-grade solder pastes require specific metal loading. Most printable pastes have much higher metal loading and will not work for needle...

Open the catalog to page 2

Solder-Paste-Solutions-Nordson-ASYMTEK-2011 - 3

Choose the system that meets your production requirement Spectrum™ S-910N ^^■■M Spectrum™ S-820 Height Sense Dispense Area: Height Sense With Precision Z option Dispense Area: ■ Height Sense: Optional A variety of solder paste valves to meet your specific requirements ■ Accuracy is "good enough" Small & Large dots Medium speed Footed needle capable wetted parts for quick and easy cleaning

Open the catalog to page 3

Solder-Paste-Solutions-Nordson-ASYMTEK-2011 - 4

Correct needle size selection helps ensure dispensing success Nordson ASYMTEK info@nordsonasymtek.com Email 2747 Loker Avenue West speak with your local contact your regional North America Maastricht, Netherlands

Open the catalog to page 4