GCT has created a USB 3.0 Type A socket rated at 20,000 mating cycles – exceeding the standard value of 1,500 cycles minimum, and the ‘high-durability’ class spec of 5,000 cycles.

“When designing equipment with USB Type A connections, engineers often take for granted how many times they are mated and unmated in its lifetime,” said GCT. “For some, this is not a concern as most are tested to 5,000 mating cycles, more than enough for its intended application. For others, this could mean the difference of a product failing far earlier than expected.”

The company has seen increasing demand for USB Type A connectors with ultra-high mating cycles, primarily for public environments and transportation applications for charging.

The connector, called USB1086, maintains the 8Nm minimum retention force over 20,000 cycles due to its stainless steel shell construction, said GCT, claiming that a typical Type A connectors has a nickel-plated brass shell where low elasticity leads to the tabs losing their grip.

As an aside, all USB 3.0 micro connectors should be rated for 10,000 cycles, and according to GCT, that goes for USB Type C as well.

Ratings are 30V 1.8A for the power pins and 250mA for the signal pins.

Contact resistance is 50mΩ max (after test) and operation is over -40°C to +85°C.