0090-90216
PreAccel Inverter

Pre-acceleration inverter (OEM P/N 0090-90216), high-voltage DC-to-AC power module for AMAT Quantum / xR ion implantation systems

ESCT P/N ES3033-113, beamline pre-acceleration power conversion module compatible with Applied Materials implanters

The Pre-Acceleration Inverter, carried under Applied Materials OEM part number 0090-90216 and supplied by ESCT Fab Support as ES3033-113, is a high-voltage DC-to-AC power conversion module used in the pre-acceleration stage of AMAT Quantum and xR-class ion implantation systems. In an implanter, ions extracted from the source must be raised to a controlled energy before they enter the main acceleration column and analysing magnet. The pre-acceleration (or “pre-accel”) electrode assembly performs this first energy step, and it depends on a stable, clean source of switched high-frequency power. That is precisely what this inverter delivers.

Functionally, the module takes a regulated DC bus from the implanter’s high-voltage power distribution and inverts it into a high-frequency alternating waveform. That waveform feeds a step-up transformer and rectifier network associated with the pre-accel electrode bias, allowing the extraction and pre-acceleration potentials to be established and held with the precision an implant recipe demands. Because the device sits on a floating, elevated potential deck and switches substantial power, it combines power electronics, magnetics and careful insulation engineering in a single serviceable assembly.

When the pre-acceleration inverter degrades, the symptoms are rarely subtle: beam current becomes unstable, energy contamination rises, and the tool may fault on high-voltage trips or fail to strike a stable beam at all. For a fab running high-value wafers, an unplanned beamline power fault translates directly into lost implant passes and scheduling disruption, which is why a verified, drop-in replacement for 0090-90216 is a sensible item to hold as spare stock.

Functional role of the pre-acceleration inverter in AMAT ion implantation platforms

Within the high-voltage power architecture of a Quantum or xR implanter, the inverter is the active switching heart of the pre-accel supply chain. It converts stored DC energy into the high-frequency drive needed to energise the pre-acceleration electrode stack while remaining electrically referenced to the floating terminal it serves. Its principal responsibilities include the following.

• Inverting the regulated DC bus into a high-frequency AC waveform suitable for driving a high-voltage step-up transformer and rectifier stage.
• Establishing and maintaining the pre-acceleration potential applied to the electrode assembly that lifts extracted ions to their intermediate energy.
• Responding to control-system demand so that beam energy tracks the implant recipe across ramp, dwell and set-point changes.
• Operating reliably while referenced to an elevated, floating potential deck, with insulation and clearances sized for the local high-voltage environment.
• Providing fast, predictable behaviour during fault and arc events so the high-voltage protection chain can trip cleanly and protect downstream beamline hardware.
• Returning status and feedback signals that allow the implanter controller to verify the pre-accel supply is healthy before and during a beam.

Electrical and signal performance

As a power-electronics assembly, the value of the pre-acceleration inverter lies in the cleanliness and stability of the waveform it produces and in its ability to survive the harsh high-voltage environment of the beamline deck.

Switching and power conversion

The inverter relies on solid-state switching devices, gate-drive circuitry and resonant or filtered output magnetics to convert DC into a controlled high-frequency AC drive. Performance hinges on consistent switching timing, balanced thermal behaviour across the power devices and a stable output under load.

• Power switching devices and their gate-drive stages, which must turn on and off cleanly to avoid shoot-through and excess loss.
• Output magnetics and capacitors that shape the waveform and couple energy into the step-up transformer.
• Bus capacitance and snubber networks that absorb switching transients and limit voltage overshoot.
• Local regulation and control logic that keep output amplitude and frequency on target across the operating range.

High-voltage isolation and signal integrity

Because the module operates near high potentials, dielectric integrity and noise immunity are as important as raw conversion efficiency. Insulation, creepage distances and shielded signal paths preserve both safety and the fidelity of feedback to the controller.

• Insulation systems and potting that withstand the local field stress without partial discharge.
• Clean reference and feedback signalling so the controller reads true output conditions despite switching noise.
• Connector and terminal integrity that maintains low-resistance, arc-free joints under thermal cycling.
• Grounding and shielding arrangements that keep emitted interference away from sensitive beamline instrumentation.

Impact on tool performance and yield

The pre-acceleration stage sets the energy of ions before they reach the analysing magnet, so the stability of its power supply propagates directly into dose accuracy, energy purity and beam reproducibility. A weak or drifting inverter undermines all three.

• Unstable pre-accel potential causes beam current fluctuation, threatening dose uniformity across the wafer.
• Energy drift at the pre-acceleration stage can shift implant depth and degrade junction precision in sensitive recipes.
• Intermittent high-voltage trips force repeated beam set-up and reduce effective tool availability.
• Marginal output increases the rate of beam glitches and arcing, raising particle and contamination risk.
• A hard failure removes the tool from production entirely until the module is replaced, directly impacting fab output.

Common failure modes

Power device and gate-drive failure

The most common end-of-life mechanism is degradation or outright failure of the switching devices and their gate-drive circuitry. Thermal cycling, repeated arc-induced transients and ageing of drive components lead to slow switching, shoot-through or a dead leg, often appearing first as erratic output before a hard fault.

Insulation breakdown and arcing

Operating near high potential, the module is exposed to dielectric stress that accumulates over time. Partial discharge, contamination on insulating surfaces or cracked potting can develop into tracking and flashover, producing high-voltage trips and, in severe cases, collateral damage to nearby components.

Capacitor ageing and connection degradation

Electrolytic and film capacitors lose capacitance and gain equivalent series resistance as they age, softening the bus and distorting the output waveform. In parallel, thermally cycled solder joints and terminals develop high resistance or intermittent contact, causing hard-to-diagnose instability that worsens under load.

Installation and replacement guidance

Replacement should only be carried out by personnel trained in high-voltage implanter service, following the relevant AMAT procedures and your site’s electrical safety rules. The module sits on a floating deck at potentials that remain dangerous after power-down, so isolate it with discipline.

• Place the tool in a safe service state, disable the beam and shut down the high-voltage supplies in accordance with AMAT procedure.
• Apply lock-out/tag-out, then confirm zero energy and discharge all high-voltage stages and deck capacitance with an approved grounding stick before touching any conductor.
• Label and disconnect the DC bus input, high-voltage output leads and control/feedback connectors, noting orientation and routing for reassembly.
• Release the mechanical fixings and remove the existing inverter, inspecting the mounting area, insulators and harness for heat damage, tracking or contamination.
• Fit the ES3033-113 module, secure all fixings to specification and check grounding and bonding to the deck.
• Reconnect power, output and signal connections exactly as recorded, verifying clearances and that no leads are pinched or stressed.
• Restore power, perform a controlled high-voltage conditioning and beam set-up, and verify stable pre-accel potential and beam current before returning the tool to production.

Spare parts strategy for AMAT ion implanter operators

High-voltage beamline power modules are exactly the kind of part where a planned spares approach pays for itself, because the failure is disruptive and the lead time on legacy assemblies can be long. Sourcing a verified, form-fit-function replacement through ESCT Fab Support lets fabs protect uptime without over-committing capital.

• A direct cross-reference from OEM P/N 0090-90216 to ESCT P/N ES3033-113 for straightforward identification and ordering.
• Verification to form, fit and function so the module integrates with the existing pre-accel power chain.
• A cost-effective alternative to scarce legacy OEM stock, helping extend the productive life of installed implanters.
• Support for keeping critical beamline power spares on the shelf to minimise mean time to repair.
• Knowledgeable assistance in confirming applicability against your specific tool configuration before purchase.

Frequently asked questions

What does the pre-acceleration inverter actually do?

It converts a regulated DC bus into high-frequency AC power used to energise the pre-acceleration electrode stage of the implanter. This establishes the intermediate energy of the ion beam before it enters the main acceleration column and analysing magnet.

Is this an original AMAT part?

No. ES3033-113 is supplied as a new, OEM-compatible replacement for AMAT part 0090-90216, verified to form, fit and function. It is not an original Applied Materials branded part and is offered as a compatible alternative for maintenance and repair.

How do I know my inverter is failing?

Typical warning signs include unstable or drifting beam current, repeated high-voltage trips during set-up, difficulty striking a stable beam, and arcing or glitch events traced to the pre-accel supply. Erratic behaviour that worsens under load often precedes a hard failure.

Which tools use this module?

It is associated with the high-voltage pre-acceleration power chain of AMAT Quantum and xR-class ion implantation systems. Because configurations vary, we recommend confirming applicability against your specific tool and the OEM part number 0090-90216 before ordering.

Can I install it myself?

Installation should be performed only by technicians trained in high-voltage implanter service. The module operates on a floating deck at hazardous potentials that persist after shutdown, so proper isolation, lock-out/tag-out and discharge of all high-voltage stages are mandatory before any handling.

What can I do to extend its service life?

Keep the high-voltage deck clean and free of contamination, manage cooling so the power devices are not thermally stressed, and address arcing or beam-glitch sources promptly. Periodic inspection of insulators, connectors and capacitors helps catch degradation before it becomes a tool-down event.

Summary

The Pre-Acceleration Inverter (AMAT 0090-90216 / ESCT ES3033-113) is a high-voltage DC-to-AC power conversion module that drives the pre-acceleration stage of AMAT Quantum and xR-class ion implanters. By producing a stable, clean high-frequency waveform on a floating high-voltage deck, it underpins beam energy accuracy, dose uniformity and overall tool availability. Holding a verified, form-fit-function replacement on the shelf is an effective way to protect a high-value implanter against the disruptive downtime that follows a beamline power fault.

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 0090-90216. 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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