Probe Station Chuck Product Introduction
The probe station chuck is a key component of a probe station,
designed to support, hold, and position wafers or samples during
electrical testing and device characterization. It provides a
stable testing platform for wafers, chips, substrates, and
semiconductor devices, ensuring reliable contact between the probe
needles and the device under test.
The chuck is commonly used in wafer probing, semiconductor
parameter testing, failure analysis, R&D verification, and
production inspection. According to different testing requirements,
the chuck can be designed as a standard chuck, vacuum chuck, hot
chuck, or customized chuck with special surface treatment and
mounting structure.
Product Function
The main function of the probe station chuck is to keep the wafer
or sample flat, stable, and accurately positioned during the
probing process. Through vacuum adsorption or mechanical holding,
the chuck prevents sample movement and improves the repeatability
and accuracy of electrical measurements.
For temperature-related testing, the chuck can also be integrated
with heating modules, temperature sensors, or cooling structures to
support stable thermal control during measurement.
Key Features
Stable Wafer Holding
The chuck surface is designed to firmly support the wafer or sample
during probing. Vacuum holes or vacuum grooves can be customized to
achieve reliable adsorption for different wafer sizes.
High Surface Flatness
Precision machining and polishing help ensure good surface
flatness, which is important for stable wafer contact and accurate
probe testing.
Optional Vacuum Design
The chuck can be designed with vacuum holes, ring-shaped vacuum
grooves, or multi-zone vacuum adsorption structures to match
different sample sizes and test requirements.
Good Thermal Performance
For hot chuck applications, materials with good thermal
conductivity can be selected to improve heating efficiency and
temperature uniformity.
Custom Surface Treatment
Surface treatments such as gold plating, nickel plating, anodizing,
ceramic coating, or other protective coatings are available to
improve wear resistance, oxidation resistance, conductivity, or
insulation performance.
Customized Mounting Interface
The bottom structure, mounting holes, vacuum ports, and connection
interface can be customized according to the customer’s probe
station design.
Available Types
| Type | Description |
|---|
| Standard Chuck | Used for general wafer or sample holding during room-temperature
probing |
| Vacuum Chuck | Uses vacuum adsorption to hold wafers or samples firmly in place |
| Hot Chuck | Integrated with heating function for high-temperature probing and
thermal testing |
| High / Low Temperature Chuck | Designed for temperature-variable electrical testing |
| Customized Chuck | Designed according to special wafer size, material, coating, or
equipment interface |
Customizable Specifications
| Item | Options |
|---|
| Wafer Size | 2", 3", 4", 6", 8" or customized |
| Material | Aluminum alloy, copper alloy, stainless steel, ceramic, etc. |
| Surface Finish | Polished, plated, coated, anodized, or customized |
| Vacuum Structure | Vacuum holes, vacuum grooves, multi-zone vacuum design |
| Temperature Function | Room temperature, heating, cooling, or high/low temperature control |
| Surface Flatness | Customized according to testing accuracy requirements |
| Mounting Structure | Designed according to probe station installation interface |
| Application | Wafer testing, chip testing, semiconductor device probing, R&D
testing |
Typical Applications
- Wafer-level probing
- Semiconductor electrical testing
- I-V / C-V measurement
- Chip and die testing
- LED, Si, SiC, GaN, GaAs device testing
- Power device and RF device characterization
- Laboratory R&D and failure analysis
- High-temperature probe station testing
FAQ
Q1: What is a probe station chuck?
A probe station chuck is a precision holding platform used in a
probe station to support and fix wafers, chips, or substrates
during electrical testing. It helps keep the sample stable and
accurately positioned while probe needles contact the device.
Q2: What is the main function of the chuck?
The main function is to hold the wafer or sample firmly during
probing. It provides stable support, reliable vacuum adsorption,
accurate positioning, and optional temperature control for
semiconductor testing.
Q3: What wafer sizes can the chuck support?
The chuck can be customized for different wafer sizes, such as 2 inch, 3 inch, 4 inch, 6 inch, 8 inch, or other special sizes according to customer requirements.
