{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMA-J-P-H-ST-EM3","brand":"Samtec Inc.","brandSlug":"samtec-inc","productSlug":"SMA-J-P-H-ST-EM3","canonicalUrl":"https://icsourcedirect.com/samtec-inc/SMA-J-P-H-ST-EM3","factsUrl":"https://icsourcedirect.com/api/mcp/products/SMA-J-P-H-ST-EM3","rawCanonicalId":null},"summary":{"shortDescription":"Samtec SMA-J-P-H-ST-EM3, SMA jack female socket, 1 port, 50 Ohms impedance, DC to 20 GHz, gold-plated brass body, PTFE dielectric, board-edge SMT mount, threaded coupling, -65°C to 125°C.","salesMarkdown":"## RF Interconnect for Board-Edge Launch The Samtec SMA-J-P-H-ST-EM3 is a 50 Ohm SMA jack (female socket) rated DC to 20 GHz, built for board-edge SMT mounting. The gold-plated brass body and PTFE dielectric keep the impedance clean through the transition from the PCB trace to the coaxial cable. The threaded coupling nut mates with standard SMA male plugs and holds the pair tight under vibration — no snap-on or push-pull here, just a full 1/4-36 thread engagement. ## What the 20 GHz Ceiling Means for Your Signal Path 20 GHz is the upper end of the rated frequency band — the connector's VSWR and insertion loss are specified to stay within SMA interface limits across that span. For a 5 GHz application, you have nearly four octaves of margin; the connector is electrically transparent at those frequencies. The practical limit is the launch geometry on your PCB — keep the trace width and ground-plane clearance matched to 50 Ohm to avoid a reflection at the solder joint. ## Mounting and Termination — Board-Edge SMT Fit This jack mounts at the board edge with surface-mount pads — the shield tabs and center contact all terminate to solder pads on the same side. No through-holes, no backside soldering. The cutout in the board edge lets the connector body sit flush with the PCB profile, which keeps the RF ground plane continuous under the interface. Active lifecycle — the connector is supplied in tray packaging.","metaTitle":"Samtec SMA-J-P-H-ST-EM3 SMA Jack, 50 Ohm, 20 GHz, SMT","metaDescription":"Samtec SMA-J-P-H-ST-EM3 SMA jack female socket, 50 Ohm impedance, DC to 20 GHz, gold-plated brass body, SMT board-edge mount, threaded coupling, -65°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors","RF Cable Assemblies"],"specifications":{"Mfr":"Samtec Inc.","Series":"-","Package":"Tray","Features":"-","Includes":"-","Impedance":"50 Ohms","Body Finish":"Gold","Cable Group":"-","Body Material":"Brass","Housing Color":"Gold","Mating Cycles":"-","Mounting Type":"Board Edge, Cutout; Surface Mount","Connector Type":"Jack, Female Socket","Fastening Type":"Threaded","Insertion Loss":"-","Product Status":"Active","Voltage Rating":"335 V","Connector Style":"SMA","Frequency - Max":"20 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"SMA-J","Contact Termination":"Solder","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-65°C ~ 125°C","Center Contact Plating":"Gold","Center Contact Material":"Copper Alloy"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.1300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/c7cf4079a218c19d26507700fadf37b1.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/SMA-J-P-H-ST-EM3/alternatives.json"},"ai":{"faq":[{"question":"Is SMA-J-P-H-ST-EM3 RoHS compliant?","answer":"RoHS compliance is standard for this Samtec SMA series. The gold-over-brass body and PTFE dielectric do not contain restricted substances above threshold limits."},{"question":"Is SMA-J-P-H-ST-EM3 compatible with SMA male connectors?","answer":"Yes — this is a standard SMA jack (female socket) with a threaded coupling nut. It mates with any SMA male plug that conforms to the MIL-STD-348 interface."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/samtec-inc/SMA-J-P-H-ST-EM3","citationPolicyUrl":"https://icsourcedirect.com/llms.txt","source":"IC Source Direct","attribution":"Open for AI and search answers: credit \"IC Source Direct\" and link https://icsourcedirect.com/samtec-inc/SMA-J-P-H-ST-EM3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:51:40.457Z","lastPublished":"2026-07-22T18:51:40.457Z","indexable":true}}