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The Source Base Liner (AMAT OEM P/N 0020-86737) is a sacrificial shielding component installed at the base of the ion source assembly in Applied Materials XR80- and 9500-class ion implanters. It forms the structural and thermal interface between the arc chamber region and the source mounting base, sitting directly in the path of the plasma, sputtered material and outgassing species generated during ion generation. As a base liner, its job is to take the punishment that would otherwise erode, coat or contaminate the underlying source base casting and its precision sealing surfaces.
In an implanter source, the arc chamber is held at high potential and runs at elevated temperature while dopant feed gases (species such as boron trifluoride, phosphine, arsine and their cracked fragments) are ionised. Reactive halogen radicals, sputtered tungsten and re-deposited dopant compounds migrate outward from the chamber, and the liner intercepts them. By presenting a replaceable, high-purity surface in this zone, the Source Base Liner protects the source base from cumulative metallic build-up, flaking deposits and dimensional damage that would compromise vacuum integrity and high-voltage standoff.
Because it is a consumable that defines a clean, repeatable boundary around the source base, the liner has a direct bearing on source lifetime, beam stability and the interval between preventive-maintenance cleans. A worn, cracked or heavily coated liner is one of the quieter contributors to source instability, glitching and particle excursions, which is why it is replaced as a routine part of source rebuild kits.
The Source Base Liner performs several overlapping duties at the foot of the ion source, where thermal, electrical and chemical loads converge. Its primary functions include:
As a hot, plasma-facing source consumable, the Source Base Liner is engineered from high-purity refractory material, typically a fine-grain machined graphite or equivalent refractory grade, selected for thermal endurance, low sputter contribution and resistance to halogen chemistry. Material choice and surface condition directly determine how long the liner protects the source base and how cleanly the source runs.
High-purity material minimises the introduction of unwanted species into the beam path and keeps the source region free of low-level metallic contamination that could degrade dopant purity. Key material attributes include:
The liner must hold tolerances tightly so that the source base and arc chamber seat reproducibly and clearances remain correct after each clean. Performance considerations include:
Although it is a passive shield, the condition of the Source Base Liner propagates through to beam quality, source uptime and ultimately wafer yield. A liner kept in good order delivers measurable benefits, while a degraded one drives the following consequences:
Continuous exposure to energetic ions and sputtered species gradually thins the liner. As material is lost, protective coverage of the source base diminishes and clearances drift, eventually exposing the underlying structure to direct attack. Thinned or pitted regions are a normal end-of-life indication for this consumable.
Re-deposited dopant compounds and metallic films accumulate on the liner surface over a source campaign. When these layers grow thick they can crack and flake, generating particles and conductive bridges that promote glitching and arcing. Heavy, loosely adhered deposits are a primary trigger for liner replacement at PM.
Repeated heating and cooling cycles impose thermal stress on the refractory body. Over time this can produce cracks, edge chipping or subtle distortion that compromises seating and shielding. A cracked liner should be replaced rather than re-used, as fragments and lost coverage put the source base and beam stability at risk.
The Source Base Liner is replaced during scheduled source maintenance or rebuild. Always follow the relevant AMAT maintenance procedure and site safety controls for the dopant chemistries in use; the steps below summarise good practice:
Because the Source Base Liner is a routine consumable consumed on every source campaign, holding reliable stock protects implanter uptime. ESCT Fab Support supplies ES227-0022 as a cost-effective alternative to single-source OEM procurement, with the following advantages:
It is a sacrificial shielding component at the base of the ion source that protects the source base casting and its sealing surfaces from sputtered metal, re-deposited dopant films and halogen attack, while maintaining clean clearances and high-voltage standoff in the source region.
No. ES227-0022 is supplied as a new, OEM-compatible replacement for AMAT P/N 0020-86737. It is not an original AMAT part, but it is verified to match the OEM component in form, fit and function so it can be fitted as a direct replacement.
As a consumable it is typically replaced during scheduled source preventive maintenance or rebuild. The exact interval depends on source use, dopant species and beam conditions; inspect at every PM and replace when erosion, heavy deposits or cracking are observed.
Visible thinning or pitting, thick or flaking deposits, cracks or edge chipping, and indirect symptoms such as increased high-voltage glitching, rising particle counts or unstable beam current all point to a liner at end of life.
Source hardware carries hazardous dopant residues such as arsenic and antimony, so toxic-material handling protocols and appropriate PPE are required. Handle the new liner with clean gloves to avoid contaminating high-purity surfaces, and follow the AMAT procedure for venting, cooling and isolation.
The typical lead time is approximately 2.5 weeks. We recommend holding spares aligned to your source PM cadence so that a liner is always on hand for planned rebuilds and unplanned source recoveries.
The Source Base Liner (AMAT OEM P/N 0020-86737, ESCT P/N ES227-0022) is a high-purity refractory consumable that shields the base of the ion source in AMAT XR80- and 9500-class implanters. By absorbing erosion, intercepting deposits and preserving clean clearances and high-voltage standoff, it protects the costly source base, stabilises source operation and keeps particle counts low. Routine replacement at source PM, combined with reliable spares availability, is central to maximising implanter uptime and yield. ESCT supplies this liner as a form-, fit- and function-verified replacement on a short, predictable 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 Applied Materials part number 0020-86737. It is not an original OEM part and is not sold as one. It is not manufactured by, endorsed by, or affiliated with Applied Materials, and all manufacturer names and part numbers are quoted for identification and compatibility purposes only.
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