The Screaming Circuits  website will now offers instant online quoting and ordering of prototype and short-run production PCB assembly built and inspected to IPC-A-610 Class III standards. By default, Screaming Circuits assembles and inspects to IPC-A-610 Class II, but with the new capability, the higher reliability standard can be quoted and ordered just as easily.
Just what is IPC Class III and why should you care? IPC-A-610 covers workmanship for electronic assemblies - the boards you design and get built up. The higher the number, the more stringent the build and inspection requirements are. Class II is the general commercial standard: items produced and inspected to IPC-A-610 Class II are deemed quality for typical commercial applications. Class III are deemed to be appropriate for hi-reliability and mission critical applications.
For most prototype and small volume applications, IPC Class II workmanship and inspection will be just fine. However, for some with tighter reliability requirements, e.g. aerospace, military, medical, harsh environments, class III workmanship and inspection may be required. Class III service is available as an option on the Screaming Circuits "Full Proto" and "Short-Run" assembly services.