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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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.

SlimVue Microscope
- Combined eye-pieces and CCD camera mount
- 3x zoom and quick lens exchange
- Quick lens exchange
- 1 um optical resolution
- Minimized scope footprint
- Fast change from navigation optics to high-resolution optics
- Resolving ‹ 50 μm pads
- Simple integration with any mmW modules
Application Specific Sigma Kits
- Engraved guides on mmW platen
- Supports broadband, load pull, coax RF and banded waveguide configuration
- Optical feedback on platen position (gauge)
- Adaptable to any mmW/sub-THz applications
- Seamless integration with any mmW modules and tuners
- Fast mounting and setup change
THz measurement capability
- Rock-solid mechanical design
- Submicron stage accuracy
- Optical feedback on platen and probe position (gauge)
- Motorized positioner
- <+-1 um separation repeatability
- Micrometer-accurate and repeatable probe placement and overtravel
- Highly-precise and stable THz measurements

- Coaxial and triaxial measurements up to 10,000 V
- High-quality construction with low-noise electrical performance
- Replaceable probe tips in a variety of tip sizes
- Temperature range of of -60°C to 300°C
- Triaxial measurement ensures a much better understanding of device leakage in the off state
- Highly reliable, stable and repeatable measurements
- Integrally designed as part of a complete measurement solution

- Customizable configuration up to 25 contacts: RF, Eye-Pass power, ground, logic
- Lithographically-defined tips allow automated over temperature measurement on pads as small as 30 µm x 50 µm
- Low and repeatable contact resistance on aluminum pads (< 0.05 Ω) ensures accurate results
- Durable probe structure ensures more than 250,000 contacts
- Able to measure from -40°C to +125°C without compromising performance or accuracy of specifications

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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Replace costly and inflexible test fixtures with easy-to-use probe tips
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Long lifetime – typically over 1,000,000 contacts
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GS/SG footprint up to 4 GHz and GSG up to 20 GHz
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High-power RF test: up to 30 Watts
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Test at temperatures from -60°C to 200°C

- Lithographic thin-film construction
- Excellent crosstalk characteristics
- Non-oxidizing nickel alloy tips
- Innovative force delivery mechanism
- 40GHz, 50GHz, 67GHz, 110GHz and 145GHz connectors available
- GSG, SG, GS, GSGSG, GSSG, SGS configurations
- 50 to 250 µm pitches (other pitches available on request)
- High current version (2 A) available
Advantages
- Superior field confinement reduces unwanted couplings to nearby devices and transmission modes
- Superior measurement accuracy and repeatability
- Small scrub minimizes damage to aluminum pad
- Typical contact resistance < 0. 05 Ω on Al, <0.02Ω on Au
- Save valuable wafer space and reduce pad parasitics by being able to shrink pad geometries to 25 x 35 µ m (best case)

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Different substrate carriers for wafers up to 100 mm or single dies
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Up to six positioners
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Independently cooled cold shield
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Probe positioners placed inside vacuum chamber
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Ergonomic and straightforward design
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Simple microscope operation
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Independent control of linear chuck stage and positioners
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Contact/separation stroke for probe platen

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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

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
