FormFactor - Cascade WPH Probe - Multi-contact DC probe with full-radius needles
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Full-radius, nickel-plated tungsten needles
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Power bypass inductance: 16 nH
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Supports collinear and non-standard needle configurations
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Support up to a maximum of 12 ceramic blades DC needles / contacts
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Ideal for probing the entire circuit for functional test
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DC probes can provide power or slow logic to circuit under test
The WPH probes feature up to 12 ceramic-bladed, nickel-plated, tungsten needles with a 2 x 12 square pin cable interface. The circuit board has been laid out such that both series and shunt components can be added to the signal path of each needle.
More Product Information

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Best price per contact – typically over one million (1,000,000) touchdowns
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RF/Microwave signal is shielded and completely air isolated in the probe body
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Excellent performance in vacuum environments and temperatures as low as 4 K, or as high as 300°C
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Highest impedance control with perfectly-symmetrical, MEMS-machined coplanar contact structure
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Probe on any pad material with minimal damage

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Low insertion loss
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Low contact resistance
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Lithographically defined probe tip
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Nickel contacts

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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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Accommodates a combination of up to four Cascade Microtech probes
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Configurable for mixed-signal RF/mmW testing
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Quick and easy repairs to be performed in the field, by simply replacing individual probes
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Adaptable to new device layouts by exchanging individual probes


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Easy and fast setup of camera views
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Go to Light and Image Settings of the selected camera view with only one mouse click
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Guided workflows for wafer setups, alignment tools and Autonomous Assistants
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Workflow wizard shows task-relevant settings and options only
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Visualizes the progress of setup, alignment and measurement tasks
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Status information always at hand
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Informs the user about events, for example “Successful Alignment”
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Interacts with the user and helps with intelligent solutions
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For very complex wafer structures
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Enables automatic test of multiple devices in each die location before stepping to the next die

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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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Ease of use – Less experienced operators can perform DC measurements by simply pushing a button. This reduces the need of experienced users full time on each system.
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Reduced Soak Time – The system will automatically re-align the probes to the pads if they drift from alignment. This reduces test time and increases throughput.
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Unattended Use – Measurements can be left running over night or the weekend, testing all devices on the wafer, and at different temperatures without the need of an operator.

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Power bypass inductance: 8 nH
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Standard DCQ probes have flat tip needles available in nickel-plated tungsten or BeCu with diameters of 0.75 mil, 1.0 mil and 1.5 mil.
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Supports collinear and non-standard needle configurations
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Up to 16 DC for standard; maximum of 24 DC for custom
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Ideal for probing the entire circuit for functional test
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DC probes can provide power or slow logic to circuit under test

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
