0010-34321
SUSCEPTOR ASSY TEOS 200mm

TEOS susceptor assembly, 200 mm (OEM P/N 0010-34321), wafer-supporting heater pedestal for Applied Materials CVD/TEOS systems

ESCT Fab Support P/N ES4044-001, form-, fit- and function-verified replacement susceptor assembly for 200 mm AMAT TEOS deposition chambers

The TEOS Susceptor Assembly (OEM P/N 0010-34321) is the wafer-supporting pedestal that sits at the heart of an Applied Materials 200 mm CVD process chamber configured for TEOS (tetraethyl orthosilicate) based silicon-dioxide deposition. The susceptor presents a precisely machined, flat seating surface on which the 200 mm wafer rests during processing, and it serves simultaneously as the thermal mass, the heat-distribution platform and the mechanical datum that fixes the wafer’s position relative to the showerhead and the gas-injection geometry above it. In a TEOS process (whether thermal, ozone-assisted or plasma-enhanced) the deposited film quality is governed almost entirely by how uniformly and how repeatably the wafer surface is held at temperature, which makes the susceptor one of the single most consequential pieces of hardware in the chamber.

As an assembly rather than a bare plate, this part typically integrates the susceptor body itself with its support hub or stem interface, the wafer-locating features (pockets, lift-pin through-holes and vacuum or contact landing zones) and the mounting provisions that couple it to the chamber’s lift and rotation hardware. It is therefore an item that combines a thermally demanding ceramic or coated metal body with tight dimensional tolerances, and any degradation of its surface, flatness or thermal coupling translates directly into film-thickness drift, particle generation and wafer-handling faults.

ESCT Fab Support supplies this component under part number ES4044-001 as a cost-effective, fully qualified alternative to ordering through the original equipment manufacturer, allowing fabs and refurbishers running legacy 200 mm TEOS capacity to maintain uptime without the lead-time and pricing pressure of single-source OEM procurement.

Functional role of the susceptor assembly in Applied Materials TEOS platforms

Within the deposition chamber the susceptor assembly carries out several interlocking duties at once. It is not simply a shelf for the wafer; it is the component that determines the wafer’s thermal environment and physical registration throughout the deposition cycle.

• Supports the 200 mm wafer on a flat, planar seating surface and establishes the fixed vertical datum from which the wafer-to-showerhead spacing is referenced.
• Thermally couples the wafer to the chamber heat source, conducting and radiating heat into the wafer backside to bring it rapidly and uniformly to the TEOS deposition set-point.
• Distributes heat laterally across its body to minimise centre-to-edge temperature gradients that would otherwise cause radial film-thickness non-uniformity.
• Provides clearance and alignment through-holes for the lift-pin mechanism so the wafer can be raised off and lowered onto the seating surface for robot transfer.
• Maintains a stable, repeatable wafer position during any chamber rotation or indexing, preserving azimuthal uniformity across the deposited oxide.
• Mechanically interfaces with the support stem, hub and chamber lift hardware, transmitting motion while isolating the wafer from vibration and thermal shock.

Material and process performance

Because the susceptor lives in the process environment and contacts the wafer directly, its material set and surface condition are what ultimately decide whether a TEOS film meets specification. Two performance dimensions matter most: thermal behaviour and surface integrity.

Thermal uniformity and stability

The susceptor body is built from materials chosen for high-temperature stability and predictable heat transfer, typically a ceramic such as aluminium nitride or alumina, or a coated metal body where thermal mass and conduction are tuned to the chamber design. Its job is to deliver a uniform temperature field to the wafer backside so that the TEOS reaction proceeds at the same rate everywhere on the surface.

• High thermal conductivity and even heat spreading to suppress radial and azimuthal gradients across the 200 mm wafer.
• Stable thermal mass so that wafer-to-wafer set-point recovery is fast and repeatable across a lot.
• Resistance to thermal-cycling fatigue, allowing thousands of heat-up and cool-down cycles without warping or cracking.
• Predictable backside contact so the wafer couples to the platform consistently from run to run.

Surface flatness and contamination resistance

The seating surface must remain flat and clean. TEOS deposition inevitably coats the susceptor as well as the wafer, so the surface has to tolerate repeated build-up and cleaning while keeping its planarity and its low-particle character.

• Tightly controlled flatness on the wafer-seating zone to avoid backside contact variation and local hot or cold spots.
• Surface finish engineered to resist particle shedding and to manage adhesion of accumulated oxide film.
• Chemical compatibility with TEOS, ozone or plasma by-products and with the periodic chamber-clean chemistry.
• Dimensional stability of lift-pin holes and locating features so wafer registration does not drift over service life.

Impact on tool performance and yield

Because the susceptor sets the thermal and positional boundary conditions for every wafer, its condition flows straight through to the metrics process engineers watch most closely. A worn, warped or contaminated susceptor rarely fails outright, it degrades quietly, and the symptoms appear first as drifting process data.

• Film-thickness non-uniformity across the wafer when thermal gradients widen, eroding within-wafer uniformity budgets.
• Deposition-rate drift and wafer-to-wafer variability as backside thermal coupling becomes inconsistent.
• Particle excursions and defect-density spikes from a degraded or flaking surface, driving down die yield.
• Wafer-handling faults (misplacement, slipping or breakage) when seating or lift-pin holes wear out of tolerance.
• Increased requalification frequency and unscheduled downtime as the chamber repeatedly drifts off baseline.

Common wear and failure modes

Surface erosion, film build-up and flaking

Repeated TEOS deposition and chamber-clean cycles gradually attack the susceptor’s working surface. Oxide accumulates, is partially removed during clean, and over time the finish roughens or develops loosely adhered deposits that flake and become a particle source, the most common reason a susceptor is pulled from service.

Thermal-cycling damage and warpage

Thousands of heat-up and cool-down cycles impose mechanical stress on the body and at material interfaces. Ceramic susceptors can micro-crack; coated or composite bodies can warp or lose flatness, both of which change wafer backside contact and undermine temperature uniformity.

Lift-pin hole and seating-feature wear

The lift-pin through-holes and any wafer-locating features see repeated mechanical contact every transfer cycle. As these wear, the wafer can sit slightly off-position or off-level, producing handoff faults, edge non-uniformity and, in the worst case, dropped or cracked wafers.

Installation and replacement guidance

Susceptor replacement is a vacuum-hardware task that should be carried out by trained personnel following the equipment owner’s maintenance procedures and safety protocols. The sequence below is a general guide and does not replace the official AMAT service documentation for the specific chamber.

• Idle the tool, complete any required chamber-clean or purge cycle, then bring the chamber to atmosphere and allow all hot surfaces to cool to a safe handling temperature.
• Lock out power and gas supplies, vent per procedure and follow ESD and contamination-control practice, handle the susceptor with clean, powder-free gloves only.
• Open the chamber, retract or remove the lift-pin assembly as required and document the orientation of the existing susceptor before removal.
• Release the susceptor from its support stem or hub, lifting it straight up to avoid scoring the seating surface or damaging the locating features.
• Inspect the support hardware, lift pins and chamber datum for wear; clean mating surfaces before fitting the new ES4044-001 assembly.
• Seat the replacement susceptor on its datum, confirm level and concentricity, reinstall the lift-pin mechanism and verify free, smooth pin travel through every hole.
• Close the chamber, pump down, leak-check, then season and requalify the chamber, running test wafers to confirm thickness uniformity, deposition rate and particle counts before returning to production.

Spare parts strategy for Applied Materials 200 mm TEOS fabs

Legacy 200 mm TEOS capacity remains commercially useful, but OEM spare-part lead times and pricing can make sustaining that capacity difficult. Sourcing qualified alternatives such as ES4044-001 from ESCT Fab Support lets fabs keep critical chamber hardware on the shelf and protect uptime.

• Form-, fit- and function-verified against the original 0010-34321 specification for direct, drop-in replacement.
• Competitive pricing versus single-source OEM procurement, lowering the cost of sustaining legacy 200 mm tools.
• A defined, communicated lead time of approximately 6 weeks, supporting planned maintenance and spares-holding decisions.
• Helps reduce the risk of extended chamber downtime by giving engineering teams a reliable second source.
• Backed by ESCT Fab Support’s focus on semiconductor process-chamber hardware and application knowledge.

Frequently asked questions

What does this susceptor assembly do in a TEOS chamber?

It supports the 200 mm wafer during deposition and acts as the thermal platform that brings the wafer uniformly to the TEOS process temperature. It also fixes the wafer’s position and provides the lift-pin through-holes used for robot transfer, so it directly governs film uniformity and wafer handling.

Is this an original OEM part?

No. This is supplied as a new, OEM-compatible replacement part under ESCT part number ES4044-001. It is verified to match the original 0010-34321 in form, fit and function, but it is not an original Applied Materials branded component and is not sold as one.

Which tools is it intended for?

It is intended for Applied Materials 200 mm CVD process chambers configured for TEOS-based silicon-dioxide deposition. Because chamber configurations vary, we recommend confirming the OEM part number 0010-34321 against your specific tool and chamber before ordering.

How will I know when my existing susceptor needs replacing?

Typical indicators are widening film-thickness non-uniformity, deposition-rate drift, rising particle counts or defect density, and wafer-handling faults such as slipping or misplacement. Visible surface erosion, flaking deposits, cracking or loss of flatness on the seating surface are clear signs the assembly should be changed out.

What is the lead time and condition?

The current lead time is approximately 6 weeks. The part is supplied new and OEM-compatible, ready for installation following standard chamber requalification.

Is any requalification needed after installation?

Yes. As with any chamber hardware change, the chamber should be pumped down, leak-checked, seasoned and requalified with test wafers to confirm thickness uniformity, deposition rate and particle performance before returning the tool to production.

Summary

The TEOS Susceptor Assembly (OEM P/N 0010-34321, ESCT P/N ES4044-001) is the wafer-supporting heater pedestal at the core of Applied Materials 200 mm TEOS CVD chambers. It holds the wafer flat, couples it thermally to the heat source and fixes its position for transfer and deposition, making thermal uniformity, surface flatness and dimensional stability the defining factors in film quality and yield. As a wear-prone consumable subject to surface erosion, thermal-cycling damage and lift-feature wear, it is a part most 200 mm TEOS fabs benefit from holding as a qualified spare. ESCT Fab Support offers it as a form-, fit- and function-verified alternative on an approximately 6-week lead time, helping sustain legacy capacity without OEM single-source constraints.

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 the original equipment manufacturer part number 0010-34321. It is not an original OEM part and is not sold as one. It is not manufactured by, endorsed by, or affiliated with the original equipment manufacturer, and all manufacturer names and part numbers are quoted for identification and compatibility purposes only.