OEM P/N:
ESCT P/N:
PART TYPE:
OEM:
The LAM Gap Motor Control Board (OEM P/N 810-017018-002) is a dedicated motion-control printed circuit board that governs the gap motor used to set and hold the electrode spacing inside LAM Research plasma etch chambers. In a parallel-plate reactive ion etch (RIE) or transformer-coupled plasma (TCP) module, the vertical distance between the powered electrode and the grounded counter-electrode, the “gap”, is one of the most influential process variables affecting plasma density, ion energy distribution and etch uniformity. This board is the electronics that commands the gap drive motor to the correct position and keeps it there throughout the recipe.
Functionally, the board sits between the tool’s system controller and the gap drive actuator. It receives a position set-point over the backplane or a dedicated motion bus, drives the motor through an onboard power stage, and closes the loop using feedback from an encoder or potentiometer mounted on the lead-screw assembly. Because the gap is adjusted between recipe steps and must remain stable to within tight tolerances during processing, the control board carries out closed-loop servo regulation rather than simple open-loop stepping.
For fabs running ageing LAM platforms, the gap motor control board is a component whose failure halts the chamber outright. A drifting or non-responsive gap axis manifests as positioning faults, recipe aborts and uniformity excursions, making a verified replacement on the shelf an important element of any sustaining-engineering spares plan.
Within the chamber motion architecture, the board is the single point of authority over the gap axis. It translates a commanded electrode separation into coordinated motor drive and continuously corrects for error using positional feedback. Its principal functions include:
As a motion-control board operating inside an RF and plasma environment, the assembly must combine clean low-level signal handling with a solid power output stage. Its performance is best understood across two domains: the servo power electronics that move the motor, and the feedback and logic circuitry that keep that motion accurate and safe.
The drive section delivers regulated current to the gap motor, managing acceleration, deceleration and holding torque while dissipating heat through power devices and their associated thermal paths. Stable, repeatable drive is what allows the gap to settle quickly and stay put.
The low-level side conditions feedback signals, executes the servo loop and exchanges status with the host. In a plasma tool, signal integrity in the presence of RF noise is what gives reliable positioning.
Because electrode gap directly shapes the plasma sheath and field distribution, the accuracy and stability of this board translate straight into process results. A board operating to specification supports tight, repeatable etch outcomes; a marginal one quietly erodes them.
Repeated motor drive cycles and thermal stress age the power output devices and their solder joints. Symptoms include weak or intermittent motor torque, current-limit trips, audible buzzing at the motor and, in severe cases, a dead drive output that prevents the gap from moving at all.
Noise pickup, a failing feedback input stage or degraded reference circuitry causes the servo loop to misread actual position. The result is gap-position errors, hunting or oscillation around the set-point, failure to reach a valid home reference, and position-out-of-tolerance alarms that abort the recipe.
Electrolytic capacitor dry-out, oxidised edge contacts and microcracked traces produce intermittent communication, sporadic resets or rail instability. These faults are often heat- or vibration-dependent, appearing under load and clearing when the board cools, which makes them difficult to diagnose without a known-good spare for substitution.
Replacement should be carried out by a qualified service technician following LAM’s maintenance procedures and your site’s electrical safety and ESD controls. The sequence below outlines a typical approach:
Motion-control boards on legacy LAM platforms can carry long OEM lead times, so holding a verified alternative reduces exposure to extended chamber downtime. ESCT Fab Support supplies this board to fabs maintaining installed LAM equipment, with the following advantages:
It controls the motor that sets and holds the electrode gap inside a LAM plasma etch chamber. The board drives the motor to a commanded position, closes the loop with feedback, and keeps the gap stable during processing, a key factor in plasma uniformity and etch repeatability.
No. This is not an original LAM OEM part. It is supplied as a new, OEM-compatible board verified to match the original to form, fit and function so that it serves as a direct replacement for OEM P/N 810-017018-002.
Typical signs include gap-position or position-out-of-tolerance faults, recipe aborts during gap moves, failure to home, hunting or oscillation around the set-point, weak motor torque, or intermittent faults that track temperature and load.
The typical lead time is approximately three weeks. We recommend holding the board as a spare so a failure can be addressed without waiting on procurement, given its impact on chamber availability.
In most cases you should transfer any jumper or switch settings from the original board and re-home the gap axis after installation, then verify position accuracy and settling using the tool’s diagnostics before returning the chamber to production. Always follow LAM’s maintenance documentation for your specific configuration.
As an electronic assembly, it requires full ESD precautions: a grounded wrist strap, a static-safe work surface and anti-static packaging during storage and transport. Avoid flexing the board or touching edge contacts, and confirm the motor supply is locked out before disconnecting harnesses.
The LAM Gap Motor Control Board (OEM P/N 810-017018-002, ESCT P/N ES2022-089) is the servo controller responsible for positioning and holding the electrode gap in LAM Research plasma etch chambers. Combining a motor power stage with feedback conditioning and servo logic, it directly influences plasma uniformity, etch repeatability and chamber uptime. With common failures spanning power-device degradation, feedback faults and connector or capacitor ageing, a verified spare is useful insurance against extended downtime. ESCT Fab Support offers this board as an OEM-compatible replacement with a typical three-week lead time.
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 810-017018-002. 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.
Fill out the form below to request a quote for the part/s you require, making sure to include the OEM part number.
If the part you are looking for is not listed, get in touch and we will try to source it for you through our wide network of partners and suppliers.
