{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1888251-1","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"1888251-1","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/1888251-1","factsUrl":"https://icsourcedirect.com/api/mcp/products/1888251-1","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity, Modular Jack, 1888251-1, 8p8c (RJ45), 4 Ports, Right Angle, Press-Fit, Shielded, EMI Finger, Cat5e, Gold 50.0µin, Tray","salesMarkdown":"## Four-Port Press-Fit RJ45 for Backplane and Panel Mount The TE Connectivity 1888251-1 is a four-port ganged modular jack, 8p8c (RJ45) configuration, designed for board-edge or panel-mount installations where a single connector body handles four Ethernet ports. Press-fit termination eliminates the soldering step — the compliant pins press into plated through-holes, which makes the assembly rework-friendly and avoids thermal stress on the board. The shielded shell with integrated EMI finger provides a low-impedance ground path to the chassis, helping the system pass Cat5e emissions limits at 100 MHz. A bicolor green/yellow LED per port gives link and activity indication without a separate indicator assembly. ## Press-Fit Termination and Board Mounting The press-fit termination is the key assembly differentiator here. The connector mounts through board-edge, panel-mount, and through-hole features — the press-fit tails engage plated through-holes without solder, so the joint is purely mechanical and can be pressed out for field replacement. The tab direction is up, meaning the locking tab on the RJ45 plug faces upward when the jack is mounted. The housing is polybutylene terephthalate (PBT), a common choice for connectors that see repeated plug insertions because it resists creep and maintains latch retention. ## Cat5e Rating and Shielding The Cat5e rating means this jack is characterized for 100 MHz performance, sufficient for 1000BASE-T (Gigabit Ethernet) over four twisted pairs. The shielded shell and EMI finger are not optional — they are part of the rated performance, providing a controlled ground return that keeps common-mode noise from coupling into the signal pairs. For a system that must pass FCC Class B or CISPR 22 radiated emissions, the low-impedance chassis bond through the EMI finger is the path that keeps the cable shield effective.","metaTitle":"TE 1888251-1 RJ45 Jack, 4-Port, Press-Fit, Cat5e, Shielded","metaDescription":"TE Connectivity 1888251-1 modular jack, 8p8c (RJ45), 4-port, right-angle, press-fit termination, shielded with EMI finger, Cat5e rated, gold 50µ\" contacts","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS Compliant","productStatus":"Active","categoryPath":["Modular / RJ Connectors","Modular Jacks (RJ)"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Series":"-","Package":"Tray","Ratings":"Cat5e","Features":"-","LED Color":"Green - Yellow","Shielding":"Shielded, EMI Finger","Orientation":"90° Angle (Right)","Termination":"Press-Fit","Mounting Type":"Board Edge; Panel Mount; Through Hole","Tab Direction":"Up","Connector Type":"Jack","Contact Finish":"Gold","Number of Rows":"1","Product Status":"Active","Number of Ports":"4","lifecycle_stage":"unknown","Contact Material":"Phosphor Bronze","Housing Material":"Polybutylene Terephthalate (PBT)","Ingress Protection":"-","Base Product Number":"1888251","Operating Temperature":"-","Contact Finish Thickness":"50.0µin (1.27µm)","Number of Positions/Contacts":"8p8c (RJ45, Ethernet)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$17.7000","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$17.70000","currency":"USD"},{"qty":20,"price":"$17.33300","currency":"USD"},{"qty":40,"price":"$16.87200","currency":"USD"},{"qty":80,"price":"$16.04225","currency":"USD"},{"qty":240,"price":"$14.47488","currency":"USD"},{"qty":440,"price":"$14.38268","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/d6180a9e0c7fecc0854ddd273db6ff28.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the pinout for 1888251-1?","answer":"The 1888251-1 uses the standard 8p8c (RJ45) contact arrangement. The pinout follows the T568A or T568B wiring scheme as defined by the Ethernet standard — the connector itself does not impose a specific assignment beyond the physical contact positions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/1888251-1","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/1888251-1 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}}