UG-58A/U is a type of subminiature coaxial connector developed by the San-Tron company. It is an inexpensive microwave and RF connector ideal for a variety of applications including antenna, instrumentation, and test equipment. The UG-58A/U offers a precision engagement, low contact resistance and high frequency performance up to 4GHz. It is designed to mate with a PC board mountable bulkhead jack. The impedance of 50 ohms ensures minimal RF and microwave signal losses. The UG-58A/U is a hermaphroditic mating connector which has a machined body, coupled with a gold-plated beryllium copper interface. It also features a threaded coupling sleeve and a spring-loaded steel center pin contact.