SM3960 is a 2.92mm female to 1.85mm male RF adapter designed to enable connections between two incompatible connector types. It features a 50 Ohm impedance with a maximum VSWR of 1.25:1 across its operating frequency range from DC to 40 GHz, ensuring excellent signal integrity. The adapter utilizes gold over nickel plated beryllium copper contacts with a passivated stainless steel body, meeting MIL-G-45204 specifications for durability and reliability. It operates over a temperature range of -55°C to +100°C and supports 500 mating cycles minimum on each connector. This adapter is ideal for general-purpose RF testing, laboratory applications, and field connections where between-series adapter functionality is required to protect expensive equipment connectors from excessive wear.