FormFactor - Cascade Multiline TRL Cal Substrates - Multiline TRL substrates for T-Wave probes
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Substrate material: High-resistivity silicon
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Substrate thickness: 275 µm
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Dielectric constant: 11.8
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Nominal Z0: 50 Ω
Millimeter- and submillimeter-wave calibration substrates, optimized for T-Wave™ probes. The multiline TRL calibration substrates offer CPW standards including reflect (short), thru and two lines and are recommended to use with WinCal XE™ calibration software. Some off-set short and off-set open structures are included for additional measurements.
Impedance Standard Substrate Maps
Part Number | Description | Pitch (μm) |
Multi-line TRL Substrate, WR1.0, WR2.2, WR3.4, WR4.3, WR5.1 |
25 | |
Multi-line TRL Substrate, WR2.2, WR3.4, WR4.3, WR5.1 | 50 | |
Multi-line TRL Substrate, WR3.4, WR4.3, WR5.1 | 75 and 100 |
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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Best solution for high accuracy IV/CV, low-noise and 1/f measurements with PureLine, AutoGuard and next generation MicroChamber technologies
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Enables up to 5x faster time to accurate data
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Advanced 4-axis semi-automatic stage for accurate positioning and repeatable probe-to-pad contact
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RF/microwave device characterization, 1/f, WLR, FA and design debug
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Wide range of extremly performant, reliable thermal chuck systems from ATT
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Easy on-screen navigation, wafer mapping, and operation of accessories and thermal systems with Velox
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User-centered design minimizes training costs and enhances efficiency

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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

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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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Intuitive, manual drives
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Front loading capability through load door
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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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Long holding time: 80 hours with 10 STP liter He-3 gas
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Stable He-3 pot temperature: Separate sippers for 1K pot and the charcoal sorb cooling line
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Sample can be loaded or removed when the cryostat is cold
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Low noise, low vibration
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Multiple operation modes: He-3 cryostat can be operated without pumping the 1K pot (referred to as 4K operation mode)


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Can help to stabilize oscillations in high-gain devices
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Impedance match to low dynamic resistance laser diodes
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Custom configured for your application

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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

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
