The EddyCus® map C2C is a fully automated measurement device for full area characterization of wafer substrates or coatings to ensure process reliability and quality assurance, in the semiconductor industry.

The system is equipped with two non-contact eddy current sensors operating in transmission mode. This allows the homogeneity of the substrate material or conductive coating to be displayed in great detail.

Measurement capabilities of the EddyCus® TF map C2C for Sheet resistance, metal layer thickness and resistivity measurement

Our system is capable of measuring the sheet resistance or metal film thickness of a thin film as well as the resistivity of the wafer substrate.



ultrasonic wafer paddle have no contact with the wafer, nor do the eddy current sensors in the SURAGUS automated handling mapping system

Innovative Floating-wafer Technology

During the development of the device, emphasis was placed on reducing contacts of the system with the wafer to a minimum in order not to influence the integrity of the wafer. Therefore, the device works almost completely non-contact. The surface of the wafer substrate or coating is not touched. Contact is only made selectively and with little force on the side surfaces of the wafer. Please have a look at our video of the EddyCus® map C2C to understand the handling process.


High-resolution, Full-surface Wafer Mapping

The measuring device creates a high-resolution, full-area imaging of the wafer or coating, which gives you a deep insight into the quality of the characterized wafer. Depending on the setting and your time requirements, imagings with a few dozen to several tens of thousands of measurement points are possible.

The software also offers various analysis tools, such as a histogram or various line profiles. To view an area on the wafer in particular detail, you can select the relevant location with the selection tool and analyze it again using line profiles or the histogram.

Software image of a high resolution and high quality sheet resistance mapping of a 8 inch wafer


Two cassettes with the size 6 inch and 8 inch for the possible use with the EddyCus® TF map C2C automated wafer handling mapper

Cassettes For 150 mm and 200 mm Wafers

The EddyCus® map C2C has a loading device that can hold a wafer carrier with 150 mm (6 inch) wafers and 200 mm (8 inch) wafers. The wafer carrier has a capacity of 25 wafers.


Automated Wafer Handling

For wafer imaging, the wafer is transferred from the cassette/carrier to the eddy current sensor and then put back into the cassette. A useful tool for manufacturing businesses looking to cut down on the time spent handling wafers is automated wafer handling. Our automated wafer handling technology lowers labor costs, boosts processing accuracy, and lowers the possibility of human error. Wafers are measured, handled, and transported precisely by the system from the cassette to the measuring station and back to the cassette. By doing this, human manipulation of the wafers is no longer necessary, which prevents measurement errors and potential wafer damage.

Non-contact ultrasonic automated wafer handling mechanism of the EddyCus® TF map C2C mapping device carriing a 8 inch wafer


SiC and GaN wafer laying on a table

Dedicated For Wide Band Gap Materials Such As SiC, GaN

A type of semiconductor material known as a wide band gap material has an energy bandgap that is broader than that of a typical semiconductor. Transistors and other integrated circuits are made using wide band gap materials in the semiconductor sector. These components are crucial for semiconductors because they provide greater power efficiency and quicker switching times. Wide band gap materials are appropriate for high-power applications because they also have larger breakdown voltages. They are better able to withstand radiation, which makes them perfect for use in space applications. Silicon carbide, gallium nitride, and diamond are a few examples of materials with a wide band gap. Many different applications, such as power supply, solar cells, and laser diodes, utilise these materials.


Sheet Resistance, Layer Thickness and Resistivity Measurement

The EddyCus® map C2C is able to determine the sheet resistance and thickness of a thin film as well as the electrical resistance of a wafer substrate. The device has a large measuring range, which means that almost all conceivable applications can be measured by the device.

Eddy Current Sensor S suitable for sheet resistance measurement, metal layer thickness measurement and resistivity measurement


For more information please watch our data sheet.

Data Sheet for EddyCus® map C2C

Measurement technology Non-contact eddy current sensor, Capacitive or confocal sensor for TTV
Substrates 6 / 8 inch wafer
Cassettes 1
Edge effect correction / exclusion 2 – 10 mm (depending on size, range, setup and requirements)
Sheet resistance range

0.0001 – 100 Ohm/sq < 1 – 3 % accuracy

100 – 100,000 Ohm/sq < 1 – 5 % accuracy

(6 decades with one sensor)

Total thickness measurement 10 – 100,000 μm (optional)
Thickness measurement of metal films (e.g. Aluminum, Copper) 2 nm – 2 mm (in accordance with sheet resistance)
Measurement patterns (line scan, mapping) 2 nm – 2 mm (in accordance with sheet resistance)
Thickness measurement of metal films (e.g. Aluminum, Copper)

Pitch 1 / 2 / 5 / 10 / 20 / 50 mm

Points 9 / 17 / 49 / 81 / 99 / 169 / 625 / .... / 10,000

Measurement time Line scans in less then 1 second Multi point: 0.1 to 1 second per point
Safety variants

System protected by safety laser scanners

Closed system

Device dimensions (w/d/h) 785 mm x 1,170 mm x 666 mm / 30.91“ x 46.06“ x 26.22“
Available features Resistivity, metal thickness, total thickness variation sensor


For product requests contact us by using the

For a prompt and informative response, please describe your measurement task (material, sample dimensions, expected measurement range) and provide your phone number.

By sending this form, I permit SURAGUS GmbH to process my data for contacting me. For more details see our Imprint & Privacy Policy