IB100 Single inspection booth
Our conformal coating inspection booths are ideal work station for either a single or dual operators to inspect printed circuit boards that have been conformally coated.
The booths are also suitable for rework, de-masking, repair, and finishing circuit boards as part of the production process.
Standard features
- Floor standing inspection booth with plinth for operator seating.
- One set of twin UVA lighting tubes fitted in the ceiling enclosure behind a UV transmittable laminate panel for in-situ inspection, with individual switch.
- Single spigot inlet for connection to suitable extraction, for low level use of solvent coatings.
- Externally powder coated framework to give lasting cosmetic finish.
IB101 double inspection booth
The IB101 double inspection booth is ideal for dual operator inspection and finishing purposes or one operator with an inspection lamp.
Standard features
- Floor standing inspection booth with plinth for operator seating.
- Two sets of twin UVA lighting tubes fitted in the ceiling enclosure behind a UV transmittable laminate panel for in-situ inspection, with individual switch.
- Dual spigot inlets for connection to suitable extraction, for low level use of solvent coatings.
- Externally powder coated framework to give lasting cosmetic finish.
Specification
| Details | IB100 | IB101 |
|---|---|---|
| Dimensions (approx) W x H x D | 1045mm x 1735mm x 850mm | 1545mm x 1735mm x 850mm |
| Height of aperture: | 390 mm | 390mm |
| Width of aperture: | 1000mm | 1500mm |
| Facilities | ||
| Electricity | 3A Single phase electricity supply | 3A Single phase electricity supply |
| Extraction (0.5 m/s face velocity) | 450 cfm with one 150mm diameter extraction connection required | 1080 cfm with two 150mm diameter extraction connections required |
Conformal coating inspection and finishing
An important point in the conformal coating process is the inspection and finishing of a printed circuit board.
To complete this process it is important to create the optimum environment where an operator can easily inspect the coated circuit boards without fatigue to body or eyes.
This provides the highest quality results for the conformal coating process and keeps the operator safe from the harmful effects of solvents.
Finishing is where conformal coating is applied by brush coating after de-masking or after conformal coating application processing where the quality of the coating finish can be improved to meet the IPC standards.
SCH Technologies have designed, manufactured, and utilise a range of purpose-built, compact UV inspection & finishing booths for conformal coating inspection that have been optimised to offer the best inspection environment without compromise to health & safety, coupled with ergonomic design to minimise operator fatigue.
Summary
Inspection FAQs
First, you need to distinguish between application and selection of coating, and qualification and manufacture of coating. As a rule the first is for the user of the end coating product and the second is for the manufacturer of the coating.
The Interconnections & Packaging Conference (IPC) standards are very good for both these areas and their details can be found on www.ipc.org.
For manufacturing you need IPC-CC-830B which details all the hoops a manufacturer has to jump through to self-certify the quality of their product.
In your case, for production purposes you would need either the IPC A -610 standard or the IPC –HDBK-830. The first gives some minor references which are of limited help except for specifying acceptance criteria. However, the handbook is a compilation of the conformal coating industry’s practical knowledge and will help designers & users of conformal coatings to understand the practical implications of selection, application and inspection, explaining in detail how to achieve the best results.
Alternatively, review the technical bulletins, specifically from August 08 to February 09 which covered conformal coating defects and this will help in the inspection stages.
The ideal solution for inspecting PCAs with conformal coating applied to them is within an inspection booth of some description.
The booth will provide a darkened area with a UV light fitted inside to allow the fluorescing coating to be examined. The work station should be designed to be comfortable as the operator needs to concentrate on the operation at hand. If you provide the perfect conditions where an operator can easily inspect conformally coated circuit boards without fatigue to body or eyes then this will provide the highest quality results for the conformal coating process.
Also, the environment needs to be safe to use. It should be possible that extraction can be fitted if required to take away any solvent fumes produced due to solvent based coating being used within the confines of the booth. Also, the UV light used should be screeened from the operators eyes since this could have health issues.
SCH Technologies have designed, manufactured and utilise a range of purpose-built, compact UV inspection, & finishing booths for conformal coating inspection that have been optimised to offer the best inspection environment without compromise to health & safety, coupled with ergonomic design to minimise operator fatigue.
The G3 specification references the ANSI standard, ANSI/ISA S71.04-1985, “Environmental conditions for process measurement and control systems: airborne contaminants,” .
The G reference refers to the severity and classification of the test and it can be G1 (Mild, Moderate, Harsh and Severe (G1, G2, G3 and Gx, respectively). The classification directly correlates with the level of corrosive effects in that environment and the standards define or characterise environments in terms of their overall corrosion potential.
G1 Mild <300Å An environment sufficiently well-controlled such that corrosion is not a factor in determining equipment reliability. G2 Moderate <1000 Å An environment in which the effects of corrosion are measurable and corrosion may be a factor in determining equipment reliability. G3 Harsh <2000 Å An environment is which there is a high probability that corrosive attack will occur. These harsh levels should prompt further evaluation resulting in environmental controls or specially design and packaged equipment. GX Severe >2000 Å An environment in which only specially designed and packaged equipment would be expected to survive. Specifications for equipment in this class are a matter of negotiation between user and supplier.