FormFactor - Cascade Eye-Pass Probe - Durable multi-contact wafer probe with controlled impedance power bypass technology
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High performance power bypassing provides low-impedance and resonant-free connections to 20 GHz
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RF bandwidth to 500 MHz
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Long probe life: > 250,000 contacts
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Beryllium-copper tips for gold pads or tungsten for aluminum pads
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Oscillation-free testing of wide-bandwidth analog circuits
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Use with ACP series probes to provide functional at-speed testing for known-good-die
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Mix multiple contact types: Ground, Power (Standard or Eye-Pass), Logic/Signal
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Low and repeatable contact resistance on aluminum pads ( < 0.25 Ω on Al, < 0.01 Ω on Au)
The multi-contact Eye-Pass probe provides controlled impedance power connections enabling functional testing of even the most challenging circuits on-wafer. The high-durability composite multi-finger tip provides high compliance and ensures precise alignment. This custom probe allows the user to select the footprint pattern best suited for the application, with up to 12 contacts per probe head. Available contact types are ground, logic, standard and Eye-Pass power supply, power supply sense, and ac signal.
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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Designed for use with specific Probe Systems
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Tables to suit all facility requirements and applications
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Stable probing, even in submicron range
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Granite platen ensures rigidity and temperature stability
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Can be combined with the Shield Enclosures

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High-quality construction with low-noise electrical performance
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Kelvin version for convenient 4-point measurements
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Replaceable coaxial probe tips, with choice of tip radii, and full electrical guard to the probe tip
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SSMC 50 connectors
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Ultra-low, fA and fF measurements from -65 º C to 150 º C

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Comprehensive I/O connections: Standard setup of up to 24 RF lines (up to 20 GHz) and 48 DC lines, with extensions to higher I/O connections possible.
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Non-magnetic construction: Capable of characterizing qubits below 50 mK without magnetic interference when required.
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Sample size: Proven with chips up to 10×10 mm in size.
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Pressure-based contact: Connect test and measurement I/O to DUT pads using pressure only. No permanent connection required.

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Proven technology: designed in conjunction with several top STM groups in the world
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Quiet, low vibration operation
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Low running costs and reduced maintenance
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Easy operation and fast cool-down; load sample when the system is cold for TL models
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Calibrated RuO and CMN thermometry read by model 372S resistance bridge are installed on the mixing chamber plate

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Revolutionary technology advancement for wafer and die-level photonics probing
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Highest accuracy in test results
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New innovative combination of hardware and software features to align and optimize fibers/arrays in a wafer-level trench
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Minimized coupling losses with minimal trench dimensions
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Industry standard for vertical coupling to wafer-level grating couplers
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Positioning hardware is precisely calibrated to the probe station and ready to perform die-to-die optical optimizations in minutes
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Dark, shielded and frost-free
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-40°C to +125°C
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Leveraging considerable expertise through an innovative engineering team
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Pioneering set of automated functions that perform critical calibrations of the optical positioning system to the probe station
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Exclusive FormFactor-developed automated test methodology
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Automates manual tasks by integrating probe station machine vision capability with optical positioning and test equipment
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FormFactor-developed graphical user interface to manually control the optical positioning system
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Configurable between single fibers, fiber arrays and edge coupling holders

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Ultra-low, fA-level current and fF-level capacitance measurements from -65 °C to + 300 °C
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Guarantees fully-guarded measurements to fA and fF levels
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Individual connectors provide force-sense connection for quasi-Kelvin and CV measurements
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Allows probing of different pad materials and sizes
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Fast replacement of worn probes without the need for tools

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Low running costs, less vibration, less noise, reduced maintenance
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Large convenient experimental access: Up to 12 line-of-sight ISO100 ports located on perimeter of plates
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CMN calibrated thermometry on MC plate
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Operation via touch panel controller: Remote operation via ethernet interface

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Die-to-die stepping time of under 100 ms
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Up to 20 dies/sec (70,000 dies/hour) with MultiDie Testing technology
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Even extreme variations in height, such as the case with warped wafers, can be compensated
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Interfaces to all major analysis instrumentation, optics software and testers
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Access to top side and bottom side of device under test (DUT)
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Highly accurate light measurement
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Test automation out-of-cassette for 24/7 operation

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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

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
