News
Early recognition of errors is becoming increasingly important when inspecting assemblies. In addition to proven 2-D evaluation for offset, completeness and smearing, Viscom (Norcross, GA) now presents 3-D paste inspection as an auxiliary option for the familiar S3054QS QuickScan Inspection System. The 3-D option can be used particularly for critical components such as ball grid arrays (BGAs) and flip chips.
The inspection system is distinguished by it short programming times and high-speed error recognition for flexible production. The simple programming allows set-up operations for different products to be accomplished within a short time.
Beginning immediately, 3-D inspection is available for checking paste printing. For this application, Viscom implemented a light section method using a dual-line laser illumination to allow image recording. With the aid of this new, modular 3-D height sensor, a height resolution of 10mm is possible.
In addition to the error characteristics of missing paste, smearing and short circuits, the height of the past print, the volume and the topography can be measured and evaluated.
The 3-D option fits in the company's existing automatic optical instpection environment and is compatible with all known tools and auxiliary tools.
Copyright 2004, UP Media Group. All rights reserved.
According to IPC (Northbrook, IL), the North American IMS/PCB Industry book-to-bill ratio for May 2004 remained steady at 1.11.
The ratio is calculated by averaging the index numbers for orders booked over the past three months and dividing by the average index numbers for sales billed during the same period. A ratio of more than 1.00 suggests that current demand is ahead of supply, which indicates probable near-term growth.
Shipments increased 41.3% from May 2003 and orders booked increased 62.4%. Compared to last year, shipments of printed circuit boards are up 36.3% year-to-date, with bookings up 50.3%.
The shipment index was up 5.5% sequentially to 138.7 and the booking index was 168.8, up 23.8%.
The indices are calculated by setting the base year (1992) equal to 100 and then multiplying the monthly growth rates of the actual shipments and bookings by the corresponding index number. A shipment index number of 117.0, for example, indicates that shipments are 17% higher than average monthly shipments in 1992.
Based on "same store" data -- a measure of those companies that reported last year and this year -- PCB shipments grew 43.8% in May over last year, and orders jumped 67% year-on-year.
Copyright 2004, UP Media Group. All rights reserved.
- To obtain sufficient information through inspection activities at vendor and licensee/applicant facilities to assure part authenticity.
- To ensure that vendors are complying with the applicable industry requirements.
- To inform industry/vendors of instances involving substandard, suspected counterfeit or fraudulently marketed vendor products and to gather and provide timely information to system users.
- To assure that counterfeit and fraudulently marketed products are traced to their source and that system users are informed and alerted of possible suspected parts.
- To inform private and federal agencies of appropriate matters involving substandard products.
- To assure that system users' programs and their subsidiaries, as applicable, have an effective system for reporting counterfeit and fraudulently marketed products.
- To provide technical assistance to system users for identifying counterfeit and fraudulently marketed products.
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