signal integrity spring probes catalog sampling with probes ranging from size AA all the way to E and custom sizes

High-Performance RF & mmWave Test Sockets

At Signal Integrity, we design for the < -1dB insertion loss you budgeted for. From 5G mmWave antennas to 112G PAM4 SerDes, our custom RF test sockets and coaxial solutions deliver pure signal transmission up to 110 GHz. By simulating every contact path in HFSS and manufacturing in-house in Massachusetts, we eliminate the impedance mismatches and inductive stubs that cause test failures.

RF & COAXIAL INTERFACE CONFIGURATIONS

Achieving signal clarity at 110 GHz requires more than just a high-speed probe—it demands a fully tuned interconnect environment. Our RF socket architectures utilize impedance-matched coaxial probes, low-dielectric housings (Torlon/PEEK), and zero-stub contact designs to eliminate insertion loss and crosstalk. Browse our primary RF configurations below to find the ideal match for your 5G, SerDes, or Automotive Radar application.

Configuration Bandwidth / Speed Impedance Min Pitch Current (Max) Best For Applications
Coaxial RF / mmWave > 40 GHz (up to 110 GHz) 50Ω Matched 0.50 mm 4.0 A 5G Antenna, Phased Array, Radar (77GHz)
High Speed Digital (SerDes) 112 Gbps PAM4 85Ω / 100Ω Diff. 0.30 mm 2.5 A AI Accelerators, GPU, PCIe Gen 6/7
Hybrid RF + Power Mixed (DC – 40 GHz) Low Inductance Mixed 10.0 A (Power Pins) Mobile SoCs, PMIC w/ RF, IoT Modules
Wireless Connectivity 6 GHz – 12 GHz 50Ω Coaxial 0.40 mm 3.0 A Wi-Fi 6E, Wi-Fi 7, Bluetooth, UWB

Overview

KEY FEATURES OF OUR RF TEST SOCKET ARCHITECTURE

  • Zero-Stub Signal Path: Coaxial probe architecture eliminates resonance & inductive stubs, ensuring flat insertion loss up to 110 GHz.
  • Impedance Matched (50Ω): Fully shielded signal paths maintain 50Ω (or 85Ω/100Ω differential) impedance from the PCB pad to the device lead.
  • Advanced Materials: We utilize engineering plastics like Torlon® 5530 and PEEK to minimize dielectric loss (Df) and maintain stability under thermal stress.
  • Hybrid Power Capability: Our sockets mix coaxial RF probes with high-current solid plungers (up to 10A) in the same housing, allowing for complete SoC testing without compromising RF performance.
  • HFSS Simulation: Every custom socket design is simulated in Ansys HFSS™ prior to fabrication to guarantee S-Parameter performance matches your budget.

VERIFIED PERFORMANCE & RAPID DELIVERY

HFSS™ Verified

We don’t guess. We simulate.

Every RF socket includes a full Ansys HFSS™ signal integrity report, validating insertion loss and return loss before we cut metal.

USA & Singapore Hubs

Global Engineering & Support

With HQ in Massachusetts and a fully equipped shop in Singapore, we bridge the gap between US design teams and Asian OSATs—providing local support in both time zones.

Reliable Delivery

Optimized Supply Chain

We manage logistics from both the US and Singapore to minimize shipping bottlenecks. Complex custom fixtures are typically deliverable to any global test floor in 6-7 weeks.

GET A FAST & ACCURATE QUOTE

To speed up your simulation and quote process, please have the following ready:

  • Zero-Stub Signal Path: Coaxial probe architecture eliminates resonance & inductive stubs, ensuring flat insertion loss up to 110 GHz.
  • Impedance Matched (50Ω): Fully shielded signal paths maintain 50Ω (or 85Ω/100Ω differential) impedance from the PCB pad to the device lead.
  • Advanced Materials: We utilize engineering plastics like Torlon® 5530 and PEEK to minimize dielectric loss (Df) and maintain stability under thermal stress.
  • Hybrid Power Capability: Our sockets mix coaxial RF probes with high-current solid plungers (up to 10A) in the same housing, allowing for complete SoC testing without compromising RF performance.
  • HFSS Simulation: Every custom socket design is simulated in Ansys HFSS™ prior to fabrication to guarantee S-Parameter performance matches your budget.
What is the typical insertion loss at 40 GHz?

Our coaxial sockets typically achieve better than -1dB insertion loss at 40 GHz. We provide a full S-Parameter simulation report for every custom design to verify performance against your budget.

Do you support PCIe Gen 6 and Gen 7?

Yes. Our 112G PAM4 and SerDes configurations are specifically designed for the tight return loss requirements of PCIe Gen 6 and emerging Gen 7 standards.

Can you match the footprint of my existing socket?

Yes. We specialize in “drop-in replacements” and can match the mounting footprint of legacy sockets from other vendors, often upgrading the performance without requiring a PCB respin.

Contact

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