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The Source Magnet Power Supply Assembly is the dedicated DC power module that energises the source magnet on Applied Materials (AMAT) ion implantation systems. In a Quantum or xR-class implanter, the ion source generates a dense arc plasma from process gases such as boron trifluoride, phosphine, arsine or argon. To keep that plasma confined, dense and stable, a magnetic field is applied across the arc chamber by the source magnet coil. The Source Magnet PSU is the regulated current source that drives this coil, and it sits within the source power and gas delivery cabinet alongside the arc, filament, extraction and bias supplies.
As an assembly, the unit typically combines an AC input stage, a rectifier and filter section, a regulated switch-mode or linear current-control stage, current and voltage sense circuitry, and the control and interlock interface that ties it into the source controller. Its job is deceptively simple to state but demanding in practice: deliver a clean, stable, repeatable magnetic-confinement current to the source magnet for hours of continuous operation, in an environment of high voltage, RF noise, thermal cycling and corrosive source by-products.
Because the source magnet field directly influences plasma density and therefore extracted beam current, the performance of this power supply has a measurable effect on beam stability, dose uniformity and source lifetime. A drifting or failing Source Magnet PSU is a common root cause of unexplained beam glitches and tune-up difficulty, which is why a verified replacement assembly is a high-value item to hold in the implant fleet spares crib.
Within the source subsystem, the Source Magnet Power Supply Assembly performs several tightly coupled functions that together govern how the arc plasma behaves and how reliably the source can be tuned and held on dose.
The defining specification of this assembly is the precision and stability of its output current into an inductive load. The source magnet coil is a low-resistance, high-inductance winding, so the supply must hold a constant current rather than a constant voltage, rejecting the back-EMF that the coil generates as field strength changes.
Sitting close to high-voltage extraction and arc circuitry, the assembly must protect itself and the wider system while remaining immune to the electrical noise generated by arcing and RF in the source enclosure.
Because the magnet current sets the confinement field, anything that degrades the Source Magnet PSU propagates straight into beam and dose behaviour, and ultimately into wafer-level results.
Ageing of reference components, sense resistors and feedback networks causes the regulated current to drift away from setpoint. Symptoms include creeping beam-current changes, frequent re-tuning and an inability to hold dose, often misdiagnosed as a source-consumable problem before the supply is suspected.
Electrolytic bulk capacitors dry out and lose capacitance with thermal cycling and time, raising ripple and stressing the regulation stage. Power semiconductors, snubbers and solder joints fatigue under repeated switching and heat, eventually producing intermittent dropouts or a hard trip under load.
High-current output terminals and control connectors loosen, oxidise or develop high-resistance joints, while interlock and sense lines can suffer corrosion or insulation damage in the source environment. These faults present as erratic readings, nuisance fault trips or apparent open-coil errors that come and go with vibration and thermal expansion.
Replacement should be carried out by a qualified equipment or facilities technician following Applied Materials service procedures and your site safety rules. The supply lives in a high-voltage cabinet, so lock-out/tag-out and verified de-energisation are mandatory before any work begins.
Source power supplies are classic single-point-of-failure items: when one fails, the implanter stops, and OEM lead times for source electronics can be long. Holding a verified Source Magnet PSU assembly on the shelf turns a multi-day outage into a planned swap, and ESCT Fab Support helps fabs do exactly that.
It supplies a regulated DC current to the source magnet coil, which creates the magnetic field that confines and shapes the arc plasma in the ion source. That field controls plasma density and therefore the beam current available for extraction, so the supply is fundamental to stable, repeatable source operation.
No. This is an OEM-compatible assembly supplied by ESCT Fab Support, verified to the form, fit and function of AMAT OEM P/N 9090-01267. It is not an original Applied Materials part and is not sold as one; references to the OEM part number are for cross-identification only.
Typical indicators are magnet-current readings that drift from setpoint, increased output ripple, intermittent fault trips, or beam-current instability that persists after source consumables have been changed and the source re-tuned. Comparing the magnet current setpoint against actual feedback during a fault is a good first diagnostic step.
The assembly is designed as a field-replaceable unit, but it resides in a high-voltage cabinet and must only be replaced by a qualified technician following AMAT service procedures and site lock-out/tag-out rules. Verified de-energisation of the magnet output and bulk capacitors comes before handling any terminals.
It is intended for AMAT Quantum and xR-class ion implantation systems that use this source magnet supply. Because configurations vary across the installed base, we recommend confirming the OEM part number and your source cabinet build with our technical team before ordering to confirm a clean match.
A failed source supply halts the implanter, and replacement electronics can carry long procurement lead times. Holding a verified unit on the shelf converts an unplanned, extended outage into a quick scheduled swap, protecting throughput and dose commitments.
The Source Magnet Power Supply Assembly (OEM P/N 9090-01267, ESCT P/N ES3033-162) is the regulated current source that energises the source magnet on AMAT Quantum and xR-class ion implanters. By holding a stable, low-ripple current into the magnet coil, it sets the plasma confinement field that governs beam current, dose uniformity and source life. Its common failure modes (regulation drift, capacitor and power-stage degradation, and connector or interlock faults) map directly onto the beam-stability and tune-up problems that disrupt implant operations. Stocking a verified, form-fit-function replacement is a practical way for fabs to protect uptime against an expensive single point of failure.
Disclaimer: This part is supplied by ESCT Fab Support as a new, OEM-compatible second-source component, verified to the form, fit and function of Applied Materials part number 9090-01267. It is not an original OEM part and is not sold as one. It is not manufactured by, endorsed by, or affiliated with Applied Materials, and all manufacturer names and part numbers are quoted for identification and compatibility purposes only.
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