KLA

A resistivity mapper is a wafer metrology tool used to measure the electrical resistance characteristics of conductive layers and substrates across a wafer surface. Resistivity mappers are used to generate spatial maps that show within wafer variation, helping engineers evaluate process uniformity and detect nonuniform regions after electrically significant process steps.
Resistivity mappers generally contact the wafer at planned measurement sites and convert the resulting electrical response into sheet resistance or bulk resistivity values. Resistivity mappers generally compile many site measurements into a wafer map so process engineers can review center to edge behavior, local excursions, and patterned or blanket film uniformity.
Resistivity mapping tools are used in electrical metrology after processes that set dopant activation or conductive film properties. Resistivity mapping commonly follows implant, diffusion, epitaxial growth, deposition, or metallization steps when engineers need to confirm that a process produced the intended electrical uniformity before later process integration or device evaluation.
The KLA RS 75 is used to analyze conductive layers including implants, diffusion, epi, CVD, metals, and bulk substrates.[4]
Documented failure modes, common issues, and field considerations.
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The following facts about the RS 75 Resistivity Mapper are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the RS 75 Resistivity Mapper are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the RS 75 Resistivity Mapper are on record.
Answerable by: an OEM product catalog or an engineer who ordered or specified the tool
The control-system platform and OS era of the RS 75 Resistivity Mapper are not on record.
Answerable by: an engineer who operated it or OEM installation records
The process node or technology generation of the RS 75 Resistivity Mapper is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No publicly documented compatible parts, consumables, or accessories for the RS 75 Resistivity Mapper are on record.
Answerable by: an OEM parts catalog or a service engineer
Last updated Oct 17, 2026.
The KLA .204 PSL Wafer is an 8-inch NIST-traceable reference wafer compatible with Surfscan 6xy0 and Sp1 particle counters.
KLA .496 PSL Wafer is an 8-inch NIST traceable wafer stated to be capable on Surfscan 6xy0 and SP1.
The KLA .498 PSL Wafer is a NIST traceable reference wafer.