As EMS companies have ramped up speeds to meet the high demand for electronics, equipment manufacturers have responded by developing machines that quickly shift from handling one package style to another with fewer sacrifices in precision. To help industry determine the best equipment setup to meet needs for speed, capability and accuracy, IPC has released revision A to IPC-9850: Surface Mount Placement Characterisation, making it far simpler to quantify the performance of placement equipment.
The comparison provided by the standard shows how machine speeds change as accuracy requirements rise. The evaluations are performed by placement of test components on test boards that are specified in the standard. These boards have five different types of component parts with various quantities of each.
IPC-9850A now complies with common methodologies for measurement system analysis (MSA) and is compatible with the approach used by ASQ and other groups. The new method calculates the expanded measurement uncertainty (EMU) which combines all the measurement uncertainty of the system. The individual factors included in the EMU are gauge repeatability and reproducibility (GR&R) variance, non-linearity, resolution, hysteresis and artefact uncertainty.
Calculating the EMU is a more stringent test of measurement capability since it adds many additional factors that were not calculated in the original IPC-9850 GRR and accuracy report, while keeping the same passing process to tolerance ratio of less than 25%.
From the editor's desk: Exciting times ahead? Technews Publishing
News
There are many subjects that excite me in this world, but two of the larger technical subjects are, firstly, renewable energy, and secondly, the idea of artificial intelligence as it continues to evolve ...
Read more...Microchip expands partnership with TSMC
News
Microchip Technology has announced it has expanded its partnership with TSMC to enable a specialised 40 nm manufacturing capacity at Japan Advanced Semiconductor Manufacturing.
Read more...Huge SA grid battery project
News
A standalone battery energy storage system (BESS) has won preferred bidder status under South Africa’s Energy Storage Capacity Independent Power Producer Procurement Programme (ESIPPPP).
Read more...Mouser sponsors NCP Cup 2024
News
The NXP Cup is an EMEA-based autonomous car competition, presented by NXP Semiconductors, which is designed to provide students with real-world experiences in autonomous vehicle programming and building.
Read more...TrinaTracker brings its smart solar tracking to SA
News
The Vanguard 1P is designed to provide customers with trackers that combine suitability for flat terrain, together with outstanding system stability and reliability, quick installation, and flexible external compatibility.
Read more...Invertek produces its three millionth drive iTek Drives
News
Invertek Drives Ltd, a global manufacturer of variable frequency drive (VFD) technology, has celebrated producing its three millionth VFD, just three years after its two-million milestone.
Read more...Vicor Powering Innovation podcast
News
The episode explores electrification with Lightning Motorcycles, a company that produces the fastest electric motorcycle on the planet.
Read more...ModusToolbox Workshop 3
News
This workshop will focus on enabling a PSoC development kit, connected over Wi-Fi and leveraging MQTT, to create the framework of an IoT application.
printer friendly version