FormFactor - Cascade Eye-Pass Probe - Durable multi-contact wafer probe with controlled impedance power bypass technology
- High performance power bypassing provides low-impedance and resonant-free connections to 20 GHz
- RF bandwidth to 500 MHz
- Long probe life: > 250,000 contacts
- Beryllium-copper tips for gold pads or tungsten for aluminum pads
- Oscillation-free testing of wide-bandwidth analog circuits
- Use with ACP series probes to provide functional at-speed testing for known-good-die
- Mix multiple contact types: Ground, Power (Standard or Eye-Pass), Logic/Signal
- Low and repeatable contact resistance on aluminum pads ( < 0.25 Ω on Al, < 0.01 Ω on Au)
The multi-contact Eye-Pass probe provides controlled impedance power connections enabling functional testing of even the most challenging circuits on-wafer. The high-durability composite multi-finger tip provides high compliance and ensures precise alignment. This custom probe allows the user to select the footprint pattern best suited for the application, with up to 12 contacts per probe head. Available contact types are ground, logic, standard and Eye-Pass power supply, power supply sense, and ac signal.
More Product Information


- Maximized Field-of-View with Ultra-Sharp Image Quality
- Slim Design
- Patent-Pending Crash Protection
- Intelligent Lens Mount
- Application Flexibility
- Seamless Integration with Velox Probe Station Control Software
- Autonomous Measurement Assistants
- Remote Operation
See "Specifications & Details" tab for more information

- 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

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Designed for use with specific Probe Systems
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Tables to suit all facility requirements and applications
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Stable probing, even in submicron range
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Granite platen ensures rigidity and temperature stability
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Can be combined with the Shield Enclosures

The LWP series Lightwave Probe enables optical measurements for on-wafer and hybrid photonics devices. It features user replaceable fiber pigtails allowing the probe to be optimized for a variety of light delivery and light collection applications including the characterization of topside illuminated photodiodes, Vertical Cavity Surface Emitting Lasers (VCSELs), hybrid transmitters and receivers, and LEDs.

Flexibility
- Application flexibility: Coax, Triax, RF/mmW, High Power, Double Sided
- Temperatures range from -60°C to +300°C
- Surfaces are nickel or gold-plated
- Hybrid chuck design – operation with and without cooling unit
- Field-upgradeable: On-site cold upgrades for all main prober platforms
Highest Efficiency for Reduced Cost of Test
- Up to 25% lower air consumption (CDA) than other systems on the market with no compromise in transition times
- Up to 15% faster transition times than other systems on the market

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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

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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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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

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
