FormFactor - Cascade FPC Probe - Rugged, deep reach RF probing for modules and circuit boards
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DC-40 GHz bandwidth
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10 ps rise time
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Low insertion and return loss
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2 mils of tip-to-tip compliance
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High probing angle and clearance
The FPC probe is a high frequency 50 ohm coaxial probe that offers a signal line with either one or two low-inductance fixed-pitch ground contacts. The probe tip structure is lithographically defined for unsurpassed impedance control, preserving the highest integrity possible when launching and receiving signals from SMT boards, hybrids and multi-chip modules(MCM).
- Maintains 50-ohm environment which allows accurate high-frequency measurement of microelectronic modules
- Compliant tips allow probing of non-planar structures
- BeCu tips provide longer probing life and reduce probe damage
- Access contacts close to components, module walls, or other obstructions
More Product Information

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High power – 66 W at 2.4 GHz and 43 W at 5 GHz
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Extremely low insertion loss of ≤ 0.4 dB (typical) up to 40 GHz
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Excellent contact control and low contact resistance
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High performance on any pad material (Al or Au)
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Longest lifetime – typically one million (1,000,000) touchdowns

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Cryogen-free option available
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Flexible sample space
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Low noise, low vibration
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Long holding time
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Stable He-3 pot temperature


The low frequency tuners are a unique product technology using MPT algorithms for low frequency wideband tuning. Three or more cascaded tuning sections use series transmission cables and parallel rotary capacitors.
The length of the cables and number of tuning sections are optimized for maximum tuning range over a given bandwidth. HLFT tuners use 6 tuning sections allowing second harmonic frequency tuning.

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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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Fully isolated experiment space for true 4K temperatures during probing
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Cryogenic positioners to provide large travel ranges without warming up the device
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Flexible thermal jumpers to ensure high thermal conductance and low mechanical transmission
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A soft vacuum bellows provides a compliant mounting interface for the cryocooler
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Quick release vacuum feedthroughs for easy configurability
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A large rectangular port for high signal capacity

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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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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

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
