Smiths Hypertac Connectors: Hyperboloid Contact Technology for Aerospace & Defence

Smiths Hypertac Connectors: Hyperboloid Contact Technology for Aerospace & Defence

27 April 2026

What Are Smiths Hypertac Connectors?

Smiths Interconnect's Hypertac range represents over 50 years of hyperboloid contact technology — a proprietary design where a cage of helically wound beryllium copper wires forms a self-wiping, low-insertion-force socket contact. Unlike conventional stamped contacts, Hypertac hyperboloid contacts provide a multi-point wiping action on mating pins, delivering exceptional resistance to vibration, shock, and repeated mating cycles.

These connectors are a preferred solution in aerospace and defence applications where connector failure is not an option — from avionics racks and mission computers to radar systems and satellite payloads.

Key Features of Hypertac Hyperboloid Contact Technology

The hyperboloid contact geometry is the defining feature of the Smiths Hypertac range. Each socket is formed by a precision cage of fine, helically wound wires. When a pin is inserted, the wires deflect radially and axially — creating multiple wiping contact points that scrub oxides and contaminants from the mating surface. This mechanism ensures reliable electrical contact even after hundreds of thousands of mating cycles, far exceeding the performance of conventional pin-and-socket contacts.

Key performance attributes include low and consistent contact resistance (typically <5 mΩ), insertion forces up to 50% lower than equivalent stamped contacts, operating temperatures from −65 °C to +200 °C, and qualification to MIL-SPEC standards including MIL-DTL-32139 and MIL-DTL-55302.

Hypertac Connector Families

Smiths Interconnect offers Hypertac contacts and housings across multiple connector families to suit different application requirements. The HPT Series provides subminiature rectangular configurations suited to PCB and wire-to-board applications in avionics and instrumentation. The HPT-MIL Series integrates Hypertac contacts into circular MIL-spec connector shells — including MIL-DTL-38999 Series III and MIL-DTL-26482 — giving engineers a drop-in upgrade path to hyperboloid contact reliability within standard shell formats.

For space-constrained designs, the Hypertac Nano range delivers contact pitches down to 1.0 mm with full hyperboloid performance in a miniaturised footprint, addressing the growing density demands of next-generation avionics and small satellite systems.

Aerospace and Defence Applications

Smiths Hypertac connectors are deployed across a wide spectrum of high-reliability applications:

• Avionics and Flight Systems: Line-replaceable unit (LRU) connectors, flight management computers, inertial navigation systems, and display units benefit from low mating force and assured contact over 100,000+ mating cycles.
• Radar and Electronic Warfare: High-frequency signal integrity is maintained by the multi-point contact geometry, minimising contact resistance variation across radar front-end assemblies and EW payloads.
• Satellite and Space Systems: Hyperboloid contacts tolerate thermal cycling extremes from cryogenic to +200 °C — critical for satellite payload connectors exposed to repeated thermal cycling in LEO and GEO orbits.
• Ground Defence Equipment: Armoured vehicle electronics, man-portable systems, and field-deployed equipment rely on Hypertac's resistance to shock and vibration under MIL-STD-810 test conditions.

Why Engineers Specify Hypertac Over Conventional Contacts

In any application where connectors are mated and de-mated repeatedly — whether during line maintenance, system integration, or field servicing — conventional stamped contacts degrade over time. Fretting corrosion, contact resistance rise, and intermittent connections are the result. Hypertac hyperboloid contacts self-wipe on every insertion, preventing oxide build-up and maintaining stable contact resistance across the connector's operational lifetime.

For applications requiring high pin counts in a compact footprint, the lower insertion force of Hypertac contacts is also a practical advantage — reducing the force required to mate a 100-pin connector from over 100 N to under 50 N, protecting PCBs and connector housings from mechanical stress during maintenance.

Related Reading

• Aerospace & Defence Connectors at TRX Electronics
• Circular MIL-Spec Connectors
• MIL-Spec Connector Types and Standards
• Deutsch DT Series Connectors: IP67 & IP6K9K
• High-Density Board-to-Board Connectors

TRX Electronics sources and supplies Smiths Hypertac connector components and contact inserts for engineering teams across South Africa. Contact our team for availability, lead times, and technical support on Hypertac connector specification for your next aerospace or defence project.