FormFactor - HPD Wet DR Series - Wet Dilution Refrigerator Systems
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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’s wet dilution refrigerators has two series of products: the Wet DR-50/250/500 and Wet DR-50-TL/250-TL/500-TL.
Both series of dilution refrigerators enable easy and cost-effective cooling to temperatures between 35 to 10 mK.
The sample of Wet DR-50/250/500 systems is located in a normal vacuum (HV) space. It can be loaded when the system is warm with the vacuum can open.
The TL series has been optimized for scanning tunneling microscopy (STM) applications. The sample can be loaded into the ultra-high vacuum (UHV) space from the top of the dilution refrigerator insert when the cryostat is cold.
Custom wiring is available.
Both fully automated and manually operated gas handling systems are available.
More Product Information

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

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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

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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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Pulse tube cryocooler for cryogen free 4K temperatures
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He-3 sorption cooler for high power intercept and launch stage for ADR
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Single stage ADR provides solid state cooling down to 25mK
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Sample stage mounting at both 300mK and 30mK
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Multiple stage feedthroughs for thermally intercepting the signals
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Two large electrical bread boards for more configurable space
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Rapid cool options for faster cooldowns

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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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Multi-purpose SIGMA instrument integration kit
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Shorter cabling and universal chuck connection
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Triax probe with protected guard
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Triax design for low-leakage measurements up to 3 kV
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Special chuck surface coating
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High-isolation ready
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Arcing protection
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Shield Enclosure with interlock
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Advanced grounding concept


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

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Probe station
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Keysight Streamline Vector Network Analyzer (option up to 53 GHz)
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Choice of probes
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Known measurement accuracy traced back to independent standards
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Uses best measurement practices for optimized measurements
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Best in class RF and Microwave performance
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Small benchtop footprint

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


