660-098076-002
MAGNETEC POWER SUPPLY

Magnetec power supply (OEM P/N 660-098076-002), magnetic-pulse power module for LAM etch and deposition systems

ESCT P/N ES2022-107, form, fit and function replacement for LAM semiconductor process platforms

The Magnetec Power Supply (LAM OEM P/N 660-098076-002) is a magnetically-coupled power conditioning and pulse-shaping module used within LAM process tools to deliver clean, regulated and precisely timed electrical energy to a downstream load. The “Magnetec” designation reflects its reliance on magnetic components (transformers, saturable reactors and magnetic-amplifier elements) to store, switch and shape energy rather than relying purely on solid-state switching. In a semiconductor fab, where plasma stability and bias accuracy translate directly into etch profile control and film uniformity, this class of supply sits at the boundary between the tool’s primary AC distribution and the sensitive process electronics it feeds.

Physically, the unit is a self-contained electronic assembly mounted within the power bay or electronics rack of the host tool. It accepts incoming line or intermediate DC power, conditions it through magnetic and rectification stages, and presents a stable, low-ripple output to RF generators, gas-panel controllers, electrostatic chuck (ESC) bias circuits or other subsystems depending on the platform configuration. Because it is a power-path component, its health is directly coupled to whether the tool can run a recipe at all.

When a Magnetec supply drifts out of tolerance or fails, the symptoms are rarely subtle: the tool may fault on power-up, trip during high-demand recipe steps, or, more insidiously, pass self-test while delivering marginal output that quietly degrades process results. Maintaining a known-good spare of P/N 660-098076-002 on the shelf is therefore a practical insurance policy against unplanned downtime in a 24/7 fab environment.

Functional role of the Magnetec power supply in LAM etch platforms

Within a LAM process system, the Magnetec Power Supply performs several interlocking jobs that together guarantee the electrical stability the process depends on:

• Converts and conditions incoming line or bus power into a regulated output at the voltage and current the downstream load requires.
• Uses magnetic energy-storage and saturable-reactor elements to shape and smooth the delivered power, suppressing transients that would otherwise reach sensitive process circuitry.
• Provides galvanic isolation between the primary distribution and the secondary load, protecting both operators and electronics from fault currents.
• Maintains low output ripple and tight regulation so that bias, RF drive or control voltages remain stable across the full range of recipe demand.
• Implements over-current, over-voltage and thermal protection that takes the output offline cleanly rather than allowing a cascading failure.
• Signals its status to the tool controller so interlocks and diagnostics can confirm the supply is ready before a wafer is processed.

Electrical and signal performance

Output regulation and ripple

The defining electrical characteristic of a magnetically-based supply is its ability to hold output voltage and current steady as the load varies. The magnetic stages act as energy reservoirs, filling and discharging in step with demand so that the load sees a stable rail rather than a fluctuating one.

• Tight line and load regulation so output remains within specification across recipe transitions.
• Low residual ripple and noise on the output rail, critical where the supply feeds bias or RF-adjacent circuitry.
• Controlled rise and settling behaviour that avoids overshoot during turn-on and step-load events.

Isolation and protection

Beyond simply delivering power, the module must fail safe. Its protection circuitry and isolation barriers exist to contain faults rather than propagate them into the rest of the tool.

• Primary-to-secondary isolation maintained by the magnetic transformer construction.
• Over-current and short-circuit foldback that protects both the supply and the connected load.
• Thermal sensing that shuts the output down before insulation or magnetic core temperatures become damaging.

Impact on tool performance and yield

Because the Magnetec supply sits in the power path of a process subsystem, its condition propagates directly into wafer-level results. A marginal or failing unit produces consequences that ripple across the fab:

• Unstable bias or RF-adjacent voltages that shift etch rate, profile or film uniformity wafer-to-wafer.
• Intermittent recipe faults and aborted lots that erode tool availability and throughput.
• Hard power-on failures that take a chamber offline until a replacement is sourced and fitted.
• Drift that escapes self-test, allowing out-of-spec wafers to progress before SPC catches the excursion.
• Knock-on stress on downstream electronics fed by a noisy or poorly regulated rail, shortening their service life.

Common failure modes

Capacitor and electrolytic ageing

Bulk and filter capacitors dry out and lose capacitance over years of thermal cycling, allowing ripple to rise and regulation to soften. This is the most common age-related degradation in any fab power supply and often precedes an outright failure by months.

Magnetic core and winding stress

Repeated high-current pulses and sustained thermal load can degrade transformer and reactor insulation, leading to inter-turn shorts, core saturation issues or audible buzzing. Because the magnetic elements define the supply’s character, this degradation directly undermines output quality.

Thermal and connection faults

Cooling-path obstruction, failed fans, dry solder joints and oxidised power connectors raise local temperatures and contact resistance. The result is nuisance thermal trips, intermittent dropouts under load and, in severe cases, localised burning or connector damage.

Installation and replacement guidance

Replacement should always follow LAM’s documented service procedure for the specific tool and be carried out by qualified personnel observing the relevant lockout/tagout requirements. The following sequence describes the typical workflow:

• Place the tool in maintenance mode, then de-energise and lock out the relevant power source, verifying zero energy before any work begins.
• Label and photograph all input, output and signal connections to the existing supply before disturbing anything.
• Disconnect the harnesses and remove any mechanical fasteners or rack rails securing the module.
• Withdraw the old unit, inspect the mounting bay and mating connectors for heat damage, corrosion or debris, and clean as required.
• Fit the replacement P/N 660-098076-002, secure it, and reconnect each harness to its labelled position, confirming connectors are fully seated.
• Restore power, clear the lockout, and verify output voltages and status signals against the tool’s specification before releasing to production.
• Run the tool’s self-test and a qualification or monitor wafer to confirm process performance has been fully restored.

Spare parts strategy for LAM process tools

Power-path modules such as the Magnetec supply are exactly the kind of component a fab should hold as a critical spare, because their failure halts a chamber outright. ESCT Fab Support helps fabs manage that risk:

• Parts verified to the form, fit and function of LAM OEM P/N 660-098076-002.
• A typical lead time of 3 weeks, supporting planned spares replenishment.
• Clear ESCT cross-referencing under P/N ES2022-107 for repeatable, traceable ordering.
• A cost-effective alternative to OEM-channel pricing for power conditioning hardware.
• Knowledgeable support to help confirm fit against your specific LAM tool configuration.

Frequently asked questions

What does the Magnetec power supply actually do?

It conditions and regulates electrical power within a LAM process tool, using magnetic energy-storage and shaping elements to deliver a stable, low-ripple, isolated output to a downstream subsystem such as bias, RF-adjacent or control electronics.

Is this an original LAM OEM part?

No. This item is supplied as a new, OEM-compatible part that is verified to the form, fit and function of LAM P/N 660-098076-002. It is not an original LAM-branded OEM product, and LAM is referenced only to identify compatibility.

How will I know if my existing supply is failing?

Typical warning signs include power-on faults, intermittent trips under recipe load, audible buzzing from the magnetics, raised output ripple, thermal shutdowns and process drift that appears even though the tool passes basic self-test.

What is the lead time?

The typical lead time is 3 weeks. Holding the unit as a critical spare is recommended so a failure does not leave a chamber offline while a replacement is procured.

Can I install it myself?

Replacement should be performed by qualified service personnel following LAM’s documented procedure and the appropriate lockout/tagout requirements, because the module handles potentially hazardous voltages and feeds process-critical electronics.

How do I confirm it fits my tool?

Match the OEM P/N 660-098076-002 against your tool’s parts documentation and quote ESCT P/N ES2022-107 when ordering. Our team can help verify compatibility against your specific LAM platform configuration.

Summary

The Magnetec Power Supply (LAM OEM P/N 660-098076-002, ESCT P/N ES2022-107) is a magnetically-based power conditioning module that delivers stable, isolated, low-ripple power to a process subsystem within LAM semiconductor tools. Its condition directly affects bias and process stability, so a marginal or failed unit can cause faults, downtime and yield loss. With verified form, fit and function compatibility and a 3-week lead time, it is a sound choice for fabs maintaining a critical-spares inventory for their LAM equipment.

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 Lam Research part number 660-098076-002. It is not an original OEM part and is not sold as one. It is not manufactured by, endorsed by, or affiliated with Lam Research, and all manufacturer names and part numbers are quoted for identification and compatibility purposes only.

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