Did You Know? 🔍

Aerospace systems must operate reliably from sea level to 60,000 feet, where air pressure drops by over 80%.

At cruising altitudes and beyond, electronic components must endure extreme conditions, from low atmospheric pressure to rapid temperature swings and intense vibration.

These environments demand interconnect systems with exceptional electrical integrity, mechanical durability, and environmental resilience. Specifications like insulation resistance, contact reliability, and material stability become critical, not optional.

IEH's HMM Series connectors are built with performance and reliability at their core, making them a trusted solution for mission-critical aerospace applications.

Altitude and Electrical Performance

With a dielectric withstand voltage rating of 750 VAC RMS at sea level and 250 VAC RMS at 70,000 feet, the HMM Series is explicitly designed to handle the low-pressure environments found at high altitudes.

A minimum insulation resistance of 5,000 megaohms ensures electrical isolation even under the most demanding flight conditions.

Temperature Tolerance

From the icy stratosphere to heat near jet engines, the HMM Series endures temperatures ranging from -65°C to +125°C, maintaining stable operation in the full spectrum of aerospace thermal extremes.

Durability and Longevity
Built to last, these connectors support up to 100,000 mating cycles, far surpassing the MIL-DTL-55302 requirement. This durability is matched by robust vibration and shock resistance,

critical for aerospace systems exposed to continuous motion and mechanical stress.

Materials That Matter
The HMM Series utilizes high-grade materials, including BeCu and PhBr contacts, and corrosion-resistant steel hardware, all finished with gold, nickel, and black anodized coatings to ensure

optimal conductivity and resistance to harsh environments, including salt spray and temperature cycling. These materials meet stringent ASTM, MIL, and SAE standards to ensure consistency and reliability.

Precision Engineering
With a contact resistance of just 5 milliohms max and a low mating force of 0.15 lbs. per contact, the HMM Series ensures stable and efficient connections with minimal wear.

Its surface-mount and through-hole compatibility also supports modern PCB designs, making integration easier for avionics manufacturers.

Whether it's avionics, satellites, or high-altitude UAVs, the HMM Series connectors are designed to meet and exceed the rigorous demands of the aerospace industry.