{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1840872-1","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"1840872-1","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/1840872-1","factsUrl":"https://icsourcedirect.com/api/mcp/products/1840872-1","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity Mag45 series, RJ45 jack, 1 port, 4 cores per jack, 90° right-angle orientation, through-hole solder termination, shielded with EMI finger, gold 50.0µin contact finish, tray package.","salesMarkdown":"## What This Mag45 RJ45 Jack Does on the Board The TE Connectivity 1840872-1 is a single-port RJ45 jack from the Mag45 series — a family that integrates the magnetics into the connector body, so you don't need separate transformer modules on the PCB for 10/100 Base-T and AutoMDIX applications. This one is a 90° right-angle, through-hole mount part with the tab facing up, designed to sit at the board edge and take an Ethernet cable straight in. ## What the Key Specs Mean for Your Fit The 0.531\" (13.49mm) height above board is the z-height you need to clear in the enclosure — measure from the PCB top to the inside of the lid or bezel before laying out the board. ## Does It Need External Magnetics? No — the Mag45 series integrates the magnetics inside the connector housing. The 4 cores per jack handle the transformer and common-mode choke functions for 10/100 Base-T. That saves board space and simplifies the BOM, but it also means the connector is taller than a plain RJ45 jack and the magnetics spec is fixed to the part number — you can't swap in a different transformer later. The 1840872-1 and 1840872-2 are both single-port Mag45 RJ45 jacks with the same 90° right-angle orientation, through-hole mounting, and EMI finger shielding. The difference comes down to the LED configuration: the 1840872-1 does not contain an LED, while the 1840872-2 includes integrated LED indicators for link/activity status. If your design needs port status lights on the connector face, go with the 1840872-2; if you're routing those signals elsewhere on the board or using a separate LED array, the 1840872-1 saves the cost and routing of the unused LED pins.","metaTitle":"TE Connectivity Mag45 1840872-1 RJ45 Connector, Shielded","metaDescription":"TE Mag45 1840872-1 single-port RJ45 jack, 90° right-angle, through-hole, shielded with EMI fingers, gold plating, 0°C to 70°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Modular / RJ Connectors"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Series":"Mag45","Package":"Tray","Features":"Board Guide","LED Color":"Does Not Contain LED","Shielding":"Shielded, EMI Finger","Orientation":"90° Angle (Right)","Termination":"Solder","Applications":"10/100 Base-T, AutoMDIX","Mounting Type":"Through Hole","Tab Direction":"Up","Connector Type":"RJ45","Contact Finish":"Gold","Number of Rows":"1","Product Status":"Active","Number of Ports":"1","Shield Material":"Brass","lifecycle_stage":"unknown","Contact Material":"Phosphor Bronze","Housing Material":"Polyethylene Terephthalate (PET), Polyester","Height Above Board":"0.531\\\" (13.49mm)","Base Product Number":"1840872","Operating Temperature":"0°C ~ 70°C","Contact Finish Thickness":"50.0µin (1.27µm)","Number of Cores per Jack":"4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.8300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/b168e2e67fd3943f92c55e0f41868178.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/1840872-1","citationPolicyUrl":"https://icsourcedirect.com/llms.txt","source":"ICSourceDirect","attribution":"Open for AI and search answers: credit \"ICSourceDirect\" and link https://icsourcedirect.com/te-connectivity-amp-connectors/1840872-1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:52:26.615Z","lastPublished":"2026-08-11T15:52:26.615Z","indexable":true}}