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888-498-3242 
Probes
True 100 Ohm Differential Probes, 40 to 110 GHz
The FPP-series differential probes deliver accurate, repeatable on-board measurements for signal integrity validation, BGA package probing, de-embedding files included, and failure analysis — no ground pins required. Now stocked and supported through HASCO RF Solutions.
Request a Quote View the Probe Series
Signal Microwave FPP series — precision engineered for high-speed measurement applications through 110 GHz.
FPP Fixed-Pitch Probe Series
Four frequency families, multiple pin pitches, multiple pin lengths available. Every probe uses a true 100 Ohm differential design with no ground pins and pins perpendicular to the probe body for accurate, repeatable contact.
Precision Engineered for Measurement Accuracy
True 100 Ohm Differential
Genuine 100 Ohm differential design — not a compromise topology — for accurate and repeatable differential impedance and S-parameter results.
No Ground Pins
Probe differential lines without hunting for a ground reference. Pins are perpendicular to the probe body for consistent, positive contact.
De-Embedded Accuracy
Validated performance with de-embedding for measurement accuracy — consistent, ripple-free results across the band, probe to probe.
Multiple Pin Lengths
Many pin lengths available, with 0.60, 0.80, and 1.0 mm pitch options to match your pad geometry.
Probe Station Ready
Multiple-axis positioning support for accurate on-board probing in bench and probe-station setups.
Patented & Proven
Patented Signal Microwave probe technology (US 10,852,322 · 11,175,311) with proven measurements at 40 GHz thru 110 GHz capability.
Probe Models and Simulation
Take your design and testing further with simulation resources and downloadable 3D models. Access simulation setup and test results to support probe evaluation, or download STEP files for select FPP70 and FPP110 probes to simplify integration into your design environment.
Probe Simulation Setup
View FPP Probes on Test PCB, port simulation set up, and testing results.
FPP70 - 1.0mm
Download the FPP70 with 1.0mm Pin Pitch STEP file.
FPP110 - 0.6mm
Download the FPP110 with 0.6mm Pin Pitch STEP file.
FPP110 - 0.8mm
Download the FPP110 with 0.8mm Pin Pitch STEP file.
Built for high-speed measurement work
VNA calibration & verification test boards
Signal Microwave high-frequency test boards give your VNA a known, golden-unit response over frequency — so you can verify calibrations, catch measurement drift, and train engineers on advanced calibration techniques.
40 & 70 GHz Verification Boards
50 Ohm through lines, a 25 Ohm Beatty section for TDR verification, and 100 Ohm differential lines — including connector-to-probe lines for evaluating each probe. Built on 8-mil Rogers RO4003 with ENIG finish and Signal Microwave edge-launch connectors, with magnetic feet for secure bench positioning.
LRL & LRM Calibration Boards
A hardware alternative to software de-embedding: a 40 GHz LRM board with probe test pads sets the reference plane at the probe tips, and a 70 GHz LRL board with 3″ traces supports training on advanced VNA calibration techniques.
HASCO RF + Signal Microwave: Partnering for Performance
HASCO RF Solutions is an authorized distribution partner for Signal Microwave FPP differential probe solutions — pairing Signal Microwave’s precision probe engineering with HASCO’s four decades of RF/microwave distribution, stocking, and technical support.
One more way HASCO delivers engineered solutions across DC to 145+ GHz — RF, microwave & mmWave.
Request an FPP Probe Solution Quote
Tell us your bandwidth, pin pitch, and application — our team will respond with pricing, availability, and configuration guidance.
Prefer to talk? Call 888.498.3242 or email sales@hasco-inc.com
