FormFactor - Cascade WPH Probe - Multi-contact DC probe with full-radius needles
- Full-radius, nickel-plated tungsten needles
- Power bypass inductance: 16 nH
- Supports collinear and non-standard needle configurations
- Support up to a maximum of 12 ceramic blades DC needles / contacts
- Ideal for probing the entire circuit for functional test
- 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

- Up to 12 contacts; any contact can be DC, Power, Logic to 500 MHz,or RF to 20 GHz
- Online design configuration tool helps you to specify your probe in minutes
- All designs are fully quadrant compatible
- Full solution includes probes, calibration substrates, stations, accessories and software
- Scalable architecture for future needs

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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

- Enables coaxial measurements up to 10,000 V and 300 A pulsed (600 A in a parallel configuration) with a single touchdown
- Even distribution of high current with innovative multi-fingertip design
- Compatible with TESLA 200/300 mm power device characterization system
- Reduced measurement time by testing both high-voltage and high-current conditions with a single touchdown
- Accurate characterization of a wide range of pad sizes and test currents, with minimum pad damage and contact resistance
- Safe, reliable and repeatable high-current/voltage measurements over a wide temperature range (from -55°C to +300°C)

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

- Choice of Series resistance or Termination (signal line to ground)
- Use of High Performance RF Resistors
- Choice of Resistor values available
- Choice of body styles, Infinity, ACP or FPC
- Can help to stabilize oscillations in high-gain devices
- Impedance match to low dynamic resistance laser diodes
- Custom configured for your application

Optimized Measurement Setup
- Multi-purpose SIGMA instrument integration kit
- Shorter cabling and universal chuck connection
- Triax probe with protected guard
- Optimized signal path
- Safe probe tip exchange
- Seamless integration of various analyzers
High Power Chuck
- Triax design for low-leakage measurements up to 3 kV
- Special chuck surface coating
- High-isolation ready
- High-current measurement up to 100 A with lowest contact resistance
- Optional upgrade for 10 kV (coax) operating voltage
- Thin wafer handling capability
Safe Operation
- Arcing protection
- Shield Enclosure with interlock
- Advanced grounding concept
- Maximum protection from high-voltage shock for users and devices
- Common ground protection for all instruments
- EMI/light-tight shielded environment

Flexibility
- Different substrate carriers for wafers up to 200 mm or single dies
- Probe cards and/or up to eight positioners
- Use with liquid nitrogen or helium, depending on the target temperature. Or use of cryo-cooler for dry-cooling option.
- Accessories available, such as black bodies and optical motion analysis tools
- Optional upgrade for 300 mm wafer
- Designed for industrial environments
- Covers wide range of measurements (I-V, C-V, RF, MEMS, OPTO)
- Ideal for small structures
See "Specifications & Details" tab for more key features

Cryogenic Temperatures
- Fully isolated experiment space for true 4K temperatures during probing
- Cryogenic positioners to provide large travel ranges without warming up the device
- Integrated helium pot for high temperature stability of the device under test
- Fully dry cryogen-free cooler eliminates the need for expensive helium circulation systems
- Rapid cool liquid nitrogen option for faster cool down times
See "Specifications & Details" tab for more key features

More than a calibration tool
- Calibration
- Validation
- Measurement
- Analysis
No one supports more VNA’s
- Support of more than 24 of the most common VNA’s
Tool for the novice
- Guided wizards and multimedia tutorials integrated
- Intelligence in setups
See "Specifications & Details" tab for more key features

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
