715-130081-008
HLDR, WFR 8", STPR, W/ALIGN HOLE (with alignment hole)

LAM 8″ wafer holder with alignment hole (OEM P/N 715-130081-008), precision wafer-stepping holder for LAM process systems

ESCT P/N ES2022-127 · LAM-compatible 200 mm wafer holder with stepping alignment feature

The LAM 8″ Wafer Holder with Alignment Hole (OEM P/N 715-130081-008) is a precision wafer-carrying and registration component used within LAM semiconductor process tools that handle 200 mm (8 inch) substrates. Designated internally as a stepping holder, the “STPR” abbreviation in the raw part descriptor, it cradles a single wafer and presents it to the tool’s handling and processing mechanisms at a precisely repeatable position. The integrated alignment hole gives the holder a fixed datum feature against which a locating pin, sensor, or stepping mechanism can index, so that each wafer arrives in the same orientation cycle after cycle.

In a typical LAM platform, components such as this sit at the interface between automated wafer handling and the process chamber or load environment. The holder must hold the substrate flat and concentric while the alignment hole maintains rotational and translational registration. Even small positional errors at this stage propagate downstream, so the dimensional integrity, flatness, and surface condition of the holder are directly tied to placement accuracy and, ultimately, to device yield.

Because the holder is a mechanical reference surface that is handled, clamped, and cycled continuously, it is subject to gradual wear, contamination build-up, and edge damage. Maintaining a serviceable spare on hand is a practical safeguard against the unplanned downtime that occurs when a worn or damaged holder begins to mis-seat wafers or trip handling sensors. This part is offered by ESCT Fab Support as a form-, fit-, and function-verified alternative to the original LAM component.

Functional role of the wafer holder in LAM wafer-handling platforms

The wafer holder performs several interlinked jobs at once: it carries the substrate, it defines its position, and it presents a known datum to the surrounding automation. Within a LAM tool these responsibilities support both throughput and process consistency.

• Supports a single 200 mm wafer on a defined seating surface, keeping it flat and free of unwanted deflection.
• Provides a repeatable mechanical datum through the integrated alignment hole, allowing a pin or stepping mechanism to index the holder to a fixed position.
• Maintains concentricity and rotational orientation so the wafer is consistently registered for downstream handling or processing.
• Presents the wafer to robotic end-effectors at a predictable height and location, supporting reliable pick-and-place transfer.
• Acts as a sensing reference for presence and position detection, where the alignment hole may interact with optical or mechanical detection features.
• Isolates the wafer from direct contact with less clean surfaces in the handling path, helping to limit particle transfer to the substrate.

Mechanical performance

As a precision mechanical reference part, the holder must combine dimensional stability with a clean, low-wear seating surface. Its performance is judged less by electrical behaviour than by how faithfully it preserves geometry and registration across thousands of handling cycles.

Dimensional stability and flatness

The seating surface must remain flat and the alignment hole must hold its position and bore tolerance so that registration does not drift. Material selection and finishing are chosen to resist warping, creep, and thermal distortion within the holder’s operating environment.

• Flat, planar seating surface to keep the wafer supported without bow or rocking.
• Tightly toleranced alignment hole to preserve indexing accuracy over the holder’s service life.
• Stable bulk material that resists distortion under repeated handling and temperature cycling.

Surface condition and cleanliness

Because the holder is in direct or near-direct contact with the wafer, its surface finish governs both particle generation and the risk of backside marking. A smooth, well-maintained surface minimises debris and supports consistent seating.

• Controlled surface finish to minimise particle shedding into the handling environment.
• Edge and bore geometry free of burrs that could scratch the wafer or snag during transfer.
• Cleanable surfaces that tolerate routine wipe-down without rapid degradation.

Impact on tool performance and yield

A wafer holder that has drifted out of tolerance or accumulated damage does not usually fail in a single dramatic event; instead it degrades placement quality and reliability in ways that erode throughput and yield. Keeping the holder in good condition protects several downstream outcomes.

• Consistent wafer registration, reducing handling faults and aborted transfers.
• Lower particle counts on the wafer backside, protecting against defect-driven yield loss.
• Fewer sensor mis-reads tied to a damaged or contaminated alignment feature.
• Reduced risk of wafer slip, edge contact, or breakage during automated transfer.
• More stable cycle times, since reliable seating avoids retries and operator intervention.

Common failure modes

Understanding how this holder typically degrades helps maintenance teams schedule replacement before a worn part begins to affect production.

Seating-surface wear and scoring

Repeated loading and unloading gradually polishes, scratches, or scores the seating surface. Over time this can change how the wafer beds down, introduce rocking, or generate particles that transfer to the substrate backside.

Alignment-hole wear and datum drift

The alignment hole takes mechanical load each time it indexes against a locating pin or stepping feature. Elongation, bell-mouthing, or edge chipping of the bore loosens the datum, allowing positional error to creep into wafer placement.

Edge damage and contamination build-up

Chips at the holder edge or accumulated residue and films on the working surfaces can interfere with seating and with sensing. Contamination is often reversible with cleaning, but cracks, chips, and ingrained damage call for replacement.

Installation and replacement guidance

Replacement should be carried out by a qualified technician following LAM’s documented procedures for the specific tool. The sequence below is a general guide and does not replace the OEM service manual or local safety practice.

• Place the tool in a safe maintenance state and follow site lockout and energy-isolation procedures before accessing the handling area.
• Confirm there is no wafer present on the holder, then remove any covers or guarding needed to reach the holder location.
• Note the orientation of the existing holder relative to the alignment hole and locating features before removal.
• Release any retaining hardware and lift the worn holder clear, taking care not to disturb adjacent sensors or pins.
• Inspect and clean the mounting interface, locating pin, and any sensing features; verify they are undamaged before fitting the new part.
• Fit the new holder, seating the alignment hole onto its datum feature in the correct orientation, and secure any retaining hardware to specification.
• Restore guarding, return the tool to service, and run handling verification and registration checks before resuming production.

Spare parts strategy for LAM 200 mm handling components

Precision handling parts such as this wafer holder are exactly the kind of item that should be stocked ahead of failure, because their gradual wear is predictable but their impact on yield is immediate. ESCT Fab Support helps fabs maintain availability of legacy 200 mm LAM components without over-relying on a single supply route.

• Parts verified to the form, fit, and function of the original LAM holder.
• Clear cross-referencing between the OEM P/N 715-130081-008 and ESCT P/N ES2022-127 for straightforward ordering.
• Support for ageing 200 mm LAM platforms where original supply can be constrained.
• A defined lead time of approximately four weeks to support planned maintenance scheduling.
• A cost-effective alternative that supports holding a spare on the shelf as insurance against downtime.

Frequently asked questions

What does this part do in the tool?

It carries a single 200 mm wafer and registers it to a fixed position using its integrated alignment hole, so that automated handling and processing operations always engage the wafer at a known, repeatable location.

Is this an original LAM OEM part?

No. This is supplied as a new, OEM-compatible part verified to the form, fit, and function of LAM P/N 715-130081-008. It is not an original OEM part and is not sold as one; it is offered as a compatible alternative under ESCT P/N ES2022-127.

What is the alignment hole for?

The alignment hole provides a mechanical datum. A locating pin or stepping feature indexes into it, fixing the holder’s orientation and position so that wafer registration stays consistent from cycle to cycle.

How do I know when the holder needs replacing?

Look for visible scoring or scratching of the seating surface, wear or chipping around the alignment hole, edge damage, rising particle counts on wafer backsides, or an increase in handling faults and sensor mis-reads that cleaning does not resolve.

What wafer size does this holder support?

It is designed for 200 mm (8 inch) wafers, consistent with the legacy 200 mm class of LAM process equipment in which holders of this type are used.

What is the lead time for this part?

The typical lead time is approximately four weeks. We recommend ordering ahead of need and holding a spare so that a worn holder can be swapped during planned maintenance rather than during unplanned downtime.

Summary

The LAM 8″ Wafer Holder with Alignment Hole (OEM P/N 715-130081-008, ESCT P/N ES2022-127) is a precision mechanical reference part that carries a 200 mm wafer and registers it through an integrated alignment hole. Its flatness, surface condition, and datum accuracy directly influence placement repeatability, particle performance, and yield. Because it wears gradually and predictably, keeping a verified spare on hand is a sound maintenance strategy. ESCT Fab Support supplies this holder as a form-, fit-, and function-verified alternative for legacy 200 mm LAM handling platforms, with a typical four-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 715-130081-008. 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.

Related parts

• 853-347146-008, ASSY, HTD PDL, FDTHRU, STPR, 8″
• 715-011492-008, HOLDER, WAFER, 8″ STRIPPER (Without alignment hole)