810-017086-010
ESC POWER SUPPLY

LAM ESC power supply (OEM P/N 810-017086-010), high-voltage electrostatic chuck bias supply for LAM etch systems

ESCT Fab Support Replacement, ESCT P/N ES2022-073

The LAM ESC Power Supply (OEM P/N 810-017086-010) is the dedicated high-voltage clamping supply that energises the electrostatic chuck (ESC) inside LAM Research plasma etch and strip chambers. An electrostatic chuck holds the production wafer against the cathode by applying a controlled DC potential across a thin dielectric layer; the resulting electrostatic force, rather than a mechanical clamp ring, fixes the wafer flat against the chuck surface. This ESC power supply is the unit that generates, regulates and monitors that clamping potential, and it is fundamental to wafer flatness, backside helium sealing and thermal contact throughout the etch process.

Physically the part is an enclosed power module that mounts in the tool’s electronics bay or chamber-side power rack, fed from the facility DC bus or an internal regulated rail and connected to the chuck through high-voltage feedthroughs. It produces a stable, well-filtered output, typically several hundred to a few thousand volts DC for a monopolar or bipolar electrode arrangement, while sourcing only a very small clamping current. Just as importantly, it senses leakage, arc and over-current conditions and reports clamp status back to the tool controller so that the system knows the wafer is securely held before plasma is struck.

Because the ESC supply sits directly in the path between wafer handling and active processing, its behaviour governs both throughput and yield. A clamp that is weak, noisy or slow to release causes wafers to shift, lose helium backside cooling, or stick at de-chuck, any of which can scrap product and force an unscheduled chamber-down event. Keeping a verified replacement supply such as ESCT P/N ES2022-073 on the shelf protects against precisely those interruptions.

Functional role of the ESC power supply in LAM etch platforms

Within a LAM etch chamber the ESC power supply performs several coordinated functions that together clamp, cool and release the wafer reliably on every cycle:

• Generates the regulated high-voltage DC potential applied to the chuck electrode to create the electrostatic clamping force that holds the wafer flat.
• Maintains tight clamp-voltage stability so backside helium pressure is contained and wafer-to-chuck thermal contact remains uniform across the process step.
• Sequences clamp and de-clamp commands from the tool controller, ramping voltage up before plasma ignition and applying controlled discharge at end of process.
• Limits and monitors clamp current, detecting leakage through a worn dielectric or a partial short to ground before it damages the chuck or wafer.
• Provides clamp-status and fault feedback to the system, interlocking against plasma strike or robot transfer when the wafer is not securely held.
• Isolates the high-voltage clamping circuit from the RF bias and chamber ground reference to avoid coupling RF noise back into sensitive control electronics.

Electrical and signal performance

As a high-voltage analogue and control assembly, this supply is judged on the cleanliness and stability of its output and on the integrity of its protection and feedback circuitry. Both directly determine clamp reliability in a noisy plasma environment.

Output regulation and ripple

The clamping output must hold its setpoint within a narrow tolerance and present low ripple so that clamping force does not modulate during the etch. Key electrical characteristics include:

• Stable regulated DC output across the rated clamp-voltage range with low line and load sensitivity.
• Low output ripple and noise so clamp force and helium sealing stay constant through the process window.
• Controlled rise and fall times for repeatable clamp and de-chuck behaviour wafer to wafer.
• High-impedance, low-leakage output stage that sources only the small current the chuck dielectric requires.

Protection and fault handling

Protection circuitry safeguards both the wafer and the chuck dielectric, and gives the tool the signals it needs to make safe sequencing decisions:

• Over-current and over-voltage limiting to shut down cleanly on a chuck short or arc rather than propagate damage.
• Leakage-current monitoring that flags dielectric degradation before clamp force is lost.
• High-voltage isolation and creepage spacing rated for the enclosed clamping potential.
• Status and interlock outputs that confirm clamp state to the controller before plasma or transfer.

Impact on tool performance and yield

The clamping supply is a single point whose health affects the entire wafer cycle. When it drifts or fails, the consequences are immediate and costly:

• Weak or unstable clamping lets the wafer lift or shift, breaking the helium backside seal and causing localised overheating and etch non-uniformity.
• Loss of thermal contact shifts critical dimensions and profile, pushing wafers out of specification and reducing yield.
• Failure to de-chuck cleanly can leave residual charge that sticks the wafer, risking breakage at the handler and particle generation.
• A hard supply fault triggers an interlock that halts processing and takes the chamber offline until the unit is replaced.
• Intermittent clamp behaviour produces hard-to-trace yield excursions that consume engineering time and tool availability.

Common failure modes

High-voltage component ageing

The output stage runs continuously at elevated potential, so high-voltage capacitors, resistors and isolation devices degrade over time. Capacitor electrolyte dry-out and resistor value drift cause the regulated output to sag or develop excess ripple, gradually weakening clamp force until wafers begin to lose backside cooling.

Insulation breakdown and arcing

Sustained high voltage, thermal cycling and any moisture or contamination ingress can erode insulation, leading to tracking, partial discharge or flashover across the output stage or feedthrough interface. Arcing damages the supply, can pit the chuck dielectric and trips the over-current protection, taking the chamber down.

Control and feedback faults

Failures on the sense and control circuitry, a drifting current monitor, a faulty status output or a marginal solder joint stressed by thermal cycling, cause false clamp faults, missed de-chuck commands or intermittent interlocks. These soft failures often present as erratic, hard-to-reproduce tool behaviour rather than a clean shutdown.

Installation and replacement guidance

Because this unit carries lethal high voltage, replacement must follow LAM’s lockout and high-voltage safety procedures and be performed only by qualified personnel. A typical replacement sequence is:

• Place the tool in maintenance mode, evacuate or vent the chamber as required and confirm there is no wafer present.
• Lock out and tag out the supply, then wait the specified dwell time and verify zero energy with a high-voltage probe before touching any output connection.
• Label and disconnect the input power, high-voltage chuck lead and control/feedback harness, noting their routing for reassembly.
• Remove the failed module from its rack or bracket and fit the replacement ES2022-073 in the same orientation and mounting points.
• Reconnect input, high-voltage output and control connectors, with correct polarity, secure seating and proper grounding of the enclosure.
• Restore power, clear lockout and verify clamp voltage, leakage and de-chuck behaviour against LAM specifications using the tool’s diagnostics.
• Run a clamp/de-chuck cycle and a qualification wafer to confirm helium sealing and process uniformity before returning the chamber to production.

Spare parts strategy for LAM ESC supplies

An ESC clamping supply is a low-failure but high-consequence part: when it goes, the chamber stops. Holding a verified spare turns a multi-week procurement scramble into a planned swap. ESCT Fab Support helps fabs manage that risk:

• Each unit is verified to the form, fit and function of OEM P/N 810-017086-010 before despatch.
• Clear cross-referencing under ESCT P/N ES2022-073 simplifies ordering and stores management.
• A consistent 3-week lead time supports planned preventive replacement and spares-pool budgeting.
• Cost-effective alternative to single-source OEM pricing without compromising clamping performance.
• Application support to help confirm suitability for your specific LAM chamber configuration.

Frequently asked questions

What does the LAM ESC power supply actually do?

It produces and regulates the high-voltage DC potential that the electrostatic chuck uses to clamp the wafer flat against the cathode. That clamping force holds the wafer in place, maintains backside helium cooling and gives uniform thermal contact throughout the etch process.

Is this an original OEM part?

No. This is an OEM-compatible replacement supplied by ESCT Fab Support. It is verified to match the form, fit and function of LAM OEM P/N 810-017086-010, but it is not an original OEM-branded part and carries the ESCT reference ES2022-073.

What is the lead time?

The standard lead time is 3 weeks. We recommend holding a spare on site given the high downtime cost of an unplanned clamping-supply failure.

How do I know the supply is the cause of my clamp problem?

Symptoms such as wafers losing backside helium pressure, clamp-voltage readbacks drifting from setpoint, repeated de-chuck or clamp faults, or arcing indications often point to the supply. Confirm by checking output voltage, ripple and leakage current against LAM specifications and by ruling out the chuck dielectric and high-voltage wiring.

Are any special precautions needed during replacement?

Yes. The unit carries lethal high voltage. Always follow LAM lockout/tagout procedures, allow the specified discharge dwell time and verify zero energy with a high-voltage probe before handling any output connection. Replacement should be carried out only by qualified service personnel.

Will it work with my specific LAM chamber?

The part is matched to OEM P/N 810-017086-010. Because LAM platforms span several chamber and ESC configurations, we recommend confirming your tool’s OEM part number and chuck arrangement with our team before ordering so we can verify compatibility.

Summary

The LAM ESC Power Supply (OEM P/N 810-017086-010, ESCT P/N ES2022-073) is the high-voltage clamping supply that energises the electrostatic chuck in LAM etch chambers, holding the wafer flat, sealing backside helium and maintaining the thermal contact on which etch uniformity and yield depend. Its regulated output, low ripple and solid protection and feedback circuitry make it a low-failure but high-consequence part, when it drifts or fails, the chamber stops. Sourced through ESCT Fab Support with a 3-week lead time and verified to OEM form, fit and function, it lets fabs keep clamping reliability high and unplanned downtime low.

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 810-017086-010. 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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