Page 56 Continued from page 54
www.us-tech.com
Nitrogen Generation’s Critical Role in Soldering Electronics manufacturing is
components on the board. Selective soldering may follow
the reflow oven process in the produc- tion line for soldering other SMT com- ponents that are able to withstand the level of heat. In these cases, great care must be taken in the selective solder- ing of additional components to avoid damaging the reflow-soldered compo-
much and within what time period a nitrogen generator will positively impact a customer’s bottom line. Nitrogen generators can save busi- nesses up to 90 percent in costs over time, especially when compared with sourcing nitrogen from gas companies. Costs aside, nitrogen generators
are also reliable. They eliminate the risk of running out of gas at an inop- portune time. A nitrogen generator is
only one example of the usefulness of nitrogen generators. Using nitrogen in electronics manufacturing will improve the process of selective sol- dering, reflow soldering, and reflow ovens. Using a nitrogen generator to source the needed nitrogen will fur-
August, 2018
ther cut costs, while producing high- purity gas safely and reliably. Contact: South-Tek Systems,
LLC, 2940 Orville Wright Way, Wilmington, NC 28405 % 910-332-4173 fax: 910-332-4178 E-mail:
info@southteksystems.com Web:
www.southteksystems.com r
Aerosol Jet Printing: Dispensing Solution
Continued from page 53
than 1.2 mil (30 µm) interconnects are enabling customers to stack more dice without worrying about wire sway or potential die cracking. With precise 0.04 to 0.2 mil (1 to
4 µm) layers of printed silver on all five sides of a radiating package, Aerosol Jet print technology is meet- ing demanding EMI/RF shielding requirements. For several customers, Aerosol
Diagram of nitrogen generator installation.
nents. Nitro gen gas may also be used in selective soldering to eliminate the possibility of oxidation that would weaken the solder.
Benefits of Nitrogen Generation Nitrogen generators are smart
for business. A nitrogen generator is an investment that, once paid off, can potentially save thousands of dollars each month, based on what a compa- ny currently pays in monthly gas charges, tank leasing and contracts with a gas supplier. South-Tek Systems offers free ROI analyses, which explain how
always equipped to create high-purity
N2 gas simply from the air surround- ing it.
Generators are safe alternatives
to handling high-pressure cylinders and use simple mechanics. Therefore, maintenance is easy and only requires a yearly filter change. If properly maintained, a nitrogen generator can last more than 20 years. Finally, nitrogen generators are flexible — a company’s output requirements may dictate the size and style of nitrogen generator needed, but the equipment is flexible, efficient and produces gas as needed.
Jet works in conjunction with stan- dard dispense technology, where more than 80 percent of dispensing requirements are met with standard tools and the remaining portion met by inline, automated Aerosol Jet printing. One key area in which Aerosol
Jet printing lags behind current pro- duction solutions is the number of materials available for its microdis- pensing capabilities. While it has the capability to print a full range of con- ductive metals, epoxies, dielectrics, etc., the aerosol process requires nanoparticle and less than 0.04 mil (1 µm) flakes in order to deposit func- tional metals and epoxies. Over the past few years there have been a
wealth of material vendors bringing new nanoparticle inks, small flake epoxies, dielectrics, graphene, CNTs, and other materials to market. However, solder and other key
electronic materials have not yet been developed for the aerosol process. This is likely to change as customer demand increases, just like we have seen with silver, copper, con- stantan, ceramics, and dielectrics. Functional capabilities are
always improving as electronics packaging and assembly manufac- turers push technology to meet ever increasing customer demand for smaller and customizable consumer- oriented products. There will be pro- duction gaps that require new flexi- ble, digitally-driven tools, materials, and processes to augment existing manufacturing solutions. The Aero - sol Jet printer, with its non-contact, direct-write, fine-feature printing capabilities is one microdispensing solution already filling current pro- duction gaps. Contact: Optomec, 3911 Singer
N.E., Albuquerque, NM 87109 % 505-761-8250 E-mail:
sales@optomec.com Web:
www.optomec.com r
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