What this SMA receptacle is and where it fits
The TE Connectivity Greenpar 3-1478978-1 is an SMA receptacle, female socket, designed for 50 Ohm systems up to 6 GHz. It is a right-angle through-hole mount part, with a gold-plated brass body and a PTFE dielectric. The centre contact is gold-plated phosphor bronze, rated for 500 mating cycles — enough for test jigs or field-replaceable modules where the connector sees regular mate/unmate duty. The operating temperature range of -65°C to 165°C is wider than many commercial SMA parts, making it a candidate for environmental chambers, outdoor radio heads, or aerospace instrumentation where the connector lives near the thermal extremes of the assembly.
Key ratings and what they mean for your design
The 50 Ohm impedance is fixed by the PTFE dielectric and the centre conductor geometry — this is a controlled-impedance interface, not a general-purpose signal connector. The 6 GHz maximum frequency means it covers L-band through C-band (GPS, Wi-Fi, 5G sub-6 GHz, radar IF) but it is not a DC-18 GHz part; if your signal path runs above 6 GHz, look at the 1057230-1 OSP jack which reaches 22 GHz. The 500 mating cycles come from the gold-on-phosphor-bronze centre contact — gold flash on the mating surface resists corrosion and keeps contact resistance stable over repeated connects. The threaded coupling gives a positive mechanical lock, so vibration won't unmate it, but the right-angle body means the cable exits parallel to the board — plan your enclosure clearance accordingly.