FormFactor - Cascade Unity Probe - Multicontact probe for RFIC engineering test
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Up to 12 contacts; any contact can be DC, Power, Logic to 500 MHz,or RF to 20 GHz
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Online design configuration tool helps you to specify your probe in minutes
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All designs are fully quadrant compatible
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Full solution includes probes, calibration substrates, stations, accessories and software
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Scalable architecture for future needs
The multi-contact Unity Probe provides highly flexible configurability, unprecedented durability and ease-of use for RFIC engineering test. Unlike “bent-to-order” needle-probe solutions, Unity probes are quickly “built-to-order” with a precision tip cluster featuring multiple independently compliant fingers to isolate chip components from probing stresses — maximizing probe life and durability. Each contact can be configured to one or several contact types and frequencies, and the Unity Probe delivers on the legendary quality you’ve come to expect from our comprehensive suite of probing solutions.
Use our online tool to capture your design requirements and receive a quote.
Use our online tool to capture your design requirements and receive a quote.
More Product Information

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On-wafer power device characterization up to 10,000 V DC / 600 A
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Safe and convenient integration kits to support T.I.P.S. “LuPo” High Voltage / High Power Probe Cards
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Prevent thin wafers from curling and breaking
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Safety interlock system with clear enclosure for operator safety during device measurements
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Convenient connection kits for easy and safe system integration with power device analyzers from Keysight Technologies and major suppliers
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Up to 25% lower air consumption (CDA) than other systems in the market (300l/min) with no compromise in transition times
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Windows 10 compatibility enables highest performance and safe operation with state-of-the-art hardware

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Ideal for a wide range of applications such as RF, mm-Wave and sub-THz characterization, FA, DWC, MEMS, optoelectronic tests and WL
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Re-configurable and upgradable as requirements grow
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Minimizes setup times with no loss in performance or accuracy
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Seamless integration of various measurement instruments
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Solid station frame
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Built-in vibration-isolation solution for superior vibration attenuation
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Rigid microscope bridge
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Compact and rigid mechanical design
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Highly accurate measurement results
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Incorporates best-known methods
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Ergonomic and straightforward design for comfortable and easy operation
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Low-profile design
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Simple microscope operation
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Quick and ergonomic change of DUT through pull-out stage
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Minimize training efforts
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Fast time to data
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Convenient operation

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Probe loss is 3 dB typical between 140 and 200 GHz, S11/S22 15 dB typical
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Reduced unwanted couplings and transmission modes
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Able to shrink pad geometries to 25 x 35 µm (best case)
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Typical contact resistance < 0.05 Ω on Al, < 0.02 Ω on Au
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WR15, WR12, WR10, WR8, WR6, WR4, WR3, and WR2 bands available.

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Different substrate carriers for wafers up to 200 mm or single dies
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Probe cards and/or up to eight positioners
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Probe positioners placed inside vacuum chamber
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Short and stable probe arms
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Joystick controller
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Manual probe positioners with rotary feed-throughs
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Software control of chuck for fast step-and-repeat testing of the entire wafer
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Fast step-and-repeat testing of the whole wafer
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User-centered design minimizes training costs and enhances efficiency

- 2-port, 1-path Vector Network Analyzer (VNA)
- Intuitive Graphical User Interface (GUI) with convenient Touch Screen
- Outstanding calibration stability
- User-defined overlays for viewing multiple S-Parameters
- Exceptional RF immunity
- IF Bandwidth selections of 10 Hz to 100 kHz
- 100 dB Transmission Dynamic Range
- 850 µs/data point sweep speed
- Internal Bias Tee option
- Vector Voltmeter option, ideal for cable phase matching
- Standard three-year warranty (battery one-year warranty)

The CSR family of calibration substrates delivers the highest accuracy available due to the high quality of each substrate. The calibration standards are manufactured using rugged, hard gold, which ensures a long lifetime.


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Multi-purpose SIGMA instrument integration kit
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Shorter cabling and universal chuck connection
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Triax probe with protected guard
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Triax design for low-leakage measurements up to 3 kV
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Special chuck surface coating
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High-isolation ready
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Arcing protection
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Shield Enclosure with interlock
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Advanced grounding concept

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Unique Air Coplanar tip design with choice of beryllium copper (BeCu) or tungsten tip material
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DC to 110 GHz models available in single and dual line versions
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Low insertion and return loss with ultra-low-loss ( -L ) versions
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Excellent crosstalk characteristics
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Wide operating temperature -65 ° C to + 200 ° C
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Wide range of pitches available, from 50 to 1250 µm
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Individually supported contacts
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Reduced contact (RC) probe tips for small pads
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BeCu tip provides rugged, repeatable contact on gold pads

FormFactor, Inc.
FormFactor, Inc. (NASDAQ:FORM) is a leading provider of essential test and measurement technologies along the full IC life cycle – from characterization, modeling, reliability, and design de-bug, to qualification and production test.
We constantly strive to help our customers solve the advanced test and measurement challenges of the broader semiconductor industry. Our focus on customer partnership, innovation, agility and operational excellence allows us to earn sustainable business every day.
Contact Details
FormFactor, Inc. Corporate Headquarters
7005 Southfront Road, Livermore, CA 94551, USA
Phone: 925-290-4000
Test & Measurement
