AMAT Centura Etch: A Practical Chamber Parts Guide

When asking for a quote for an old cavity part, simply writing “for Centura etching machines” is often not enough. It may come from silicon etching, metal etching, or dielectric etching cavities, or it may belong to different wafer sizes and hardware generations. Rings, liners, or cavity bodies that appear similar may have completely different interfaces, materials, surface treatments, and process environments.

The key to identifying amat centura etch parts is not to guess which one it is like first, but to break down the device name into verifiable levels and then have the old part identification and official documents confirm each other.

Separate the platform and process cavity first

Centura is a series of monolithic multi-cavity platforms. The disclosed product range covers etching, CVD, epitaxy and other process applications. Therefore, “Centura” itself only describes the platform family and cannot directly explain which process the equipment is performing. Centura Etch is further narrowed down to etching products, but still includes different orientations such as silicon, metal and dielectric etching.

A multi-cavity architecture typically includes a base platform, a wafer transfer system, a loading lock, and several process cavities. The platform's common components, transmission components, and cavity internal components belong to different levels. Before inquiring, confirm whether the part is installed in the main unit, transmission module, loading lock, or a specific etching cavity; based solely on the platform name on the equipment housing, it is impossible to conclude whether the part is compatible.

See the meaning of DPS, DPS Plus and eMax

DPS is an abbreviation for Decoupled Plasma Source, which is an expression of plasma source and etched cavity technology, and is not another name for the Centura host. Historical products include both Silicon Etch DPS and Metal Etch DPS; even with DPS, the materials and processes facing the two types of cavities are different, and the internal parts cannot be used interchangeably.

DPS Plus is a different product or generational expression, and the "Plus" in the name cannot be omitted. Super e and eMax belong to the context of media etching products, and the cavity versions cannot be combined just because they are both used for media etching. When making a judgment, the full name on the nameplate should be retained, including limiting information such as Metal, Silicon, Dielectric, and Plus.

Wafer dimensions should also not be omitted. Centura and Centura AP host architectures can support 150 mm, 200 mm, and 300 mm wafers according to specific configurations. Historical data also shows etching products with 200 mm and 300 mm respectively. The presence of the same product family name in different size data does not mean that the cavity, robot interface, or loading lock configuration can be directly interchanged.

Check full identity from old item label

The most reliable starting point is usually the old item label. Record the complete material number, revision, part description, and quantity. Do not fill in the blurred characters yourself, and do not omit REV, version letters, or suffixes. The equipment platform, host generation, complete cavity name, wafer size, assembly location, and upper component material number are supplemented to form a set of information that can be cross-checked.

This distinction can also be seen in the actual parts list. Material numbers 0040-02544 correspond to the upper cavity of DPS Metal, 0021-09625 and 0021-36743 point to the lower cavity of DPS Poly, and 0020-33806 has the DPS+ Poly designation. They are all related to the Centura 5200 etching context, but cannot be classified as the same cavity body due to their similar names.

The same applies to rings. The description of 0200-10377 includes DPS cavity definition, and 0200-36691 contains both 150 mm and DPS Poly information. One less size, material, and installation location will change the matching range. When the label cannot be read, cross-confirmation can be performed using old part photos, interface dimensions, assembly locations, bills of materials, and equipment configuration files. However, photos can only assist in identification and cannot replace material number and version evidence.

Alternative parts cannot be verified only “installed”

Once the candidate replacement parts are received, the consistency of mechanical dimensions is only the first step in the inspection. It is also necessary to compare vacuum interfaces, materials, surface treatments, temperature ranges, chemical compatibility, gas flow channels, thermal properties, cleanliness, and particle and contamination requirements. The plasma source, temperature control, intake and exhaust structures may vary depending on the etching object; these differences directly affect the applicable boundaries of the cavity interior components.

New parts, cleaning parts, repair parts, and refurbished parts should also be described separately. The completion of cleaning does not mean that the dimensions, coating, seal, or function have been restored. The acceptance items after renovation should correspond to the specific materials, process chemicals, and cavity uses. Certificates or inspection records must be associated with a specific material number, revision, batch, and quantity.

Complete final check before inquiry

An executable inquiry should include at least the platform, host, process category, product family, cavity version, wafer size, raw material number, revision, part description, quantity, and availability status. For historical equipment, add the equipment serial number, photos of the installed hardware, modification records, software or control versions, and whether you want to use a new part, a repaired part, a refurbished part, or a replacement part.

If you only have information at this level “Centura Etch”, don't order with similar-looking parts yet. Only by finding the cavity nameplate and old part label, and confirming the full names of DPS, DPS Plus, eMax, etc. together with the wafer size, can we truly enter the matching range.