{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"749193-1","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"749193-1","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/749193-1","factsUrl":"https://icsourcedirect.com/api/mcp/products/749193-1","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity AMPLIMITE.050 III, 749193-1, two-piece shielded backshell, 50 positions, shell size D, zinc die-cast, nickel over copper plating, 180° cable exit, spring lock, strain relief.","salesMarkdown":"## Shielded Backshell for 50-Position D-Sub Connectors The TE Connectivity 749193-1 is a two-piece shielded backshell from the AMPLIMITE.050 III series, designed to terminate shielded round cable to a 50-position D-sub connector. The zinc die-cast shell carries a nickel over copper plating, providing a continuous EMI/RFI barrier from the cable braid through to the connector shell. It accepts shell size D connectors, which covers both standard-density 50-position and high-density 78-position D-subs that share the same shell envelope. A spring lock secures the two backshell halves together without separate screws, and the included strain relief clamps the cable jacket to prevent tension from reaching the solder or crimp terminations inside the D-sub. ## Compatibility and Installation This backshell mates with any standard 50-position D-sub connector and also fits HD-78 connectors that use shell size D. The two-piece design installs after the cable is terminated. The nickel over copper plating on the zinc shell ensures good conductivity between the backshell and the D-sub connector's metal shell, completing the shield path. The silver color matches standard D-sub hardware finishes.","metaTitle":"TE 749193-1 AMPLIMITE .050 III Backshell, 50 Pos, Shielded","metaDescription":"TE Connectivity 749193-1 AMPLIMITE .050 III two-piece backshell, 50 positions, shielded zinc die-cast, nickel over copper plating, spring lock, active","metaKeywords":null},"attributes":{"series":"AMPLIMITE .050 III","packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["D-Sub & D-Shaped Connectors","D-Sub Backshells & Hoods"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Color":"Silver","Series":"AMPLIMITE .050 III","Package":"Bag","Plating":"Nickel over Copper","Features":"Spring Lock","Hardware":"Assembly Hardware, Strain Relief","Material":"Metal, Zinc","Shielding":"Shielded","Cable Exit":"180°","Cable Type":"Round","Accessory Type":"Two Piece Backshell","Product Status":"Active","lifecycle_stage":"unknown","Primary Material":"Metal","Base Product Number":"749193","Number of Positions":"50","Compatible D-Sub Size":"50pos and HD78pos","Compatible Shell Size":"D"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.1400","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$12.14000","currency":"USD"},{"qty":10,"price":"$10.97600","currency":"USD"},{"qty":25,"price":"$10.68560","currency":"USD"},{"qty":50,"price":"$10.27920","currency":"USD"},{"qty":100,"price":"$9.52420","currency":"USD"},{"qty":250,"price":"$9.46612","currency":"USD"},{"qty":500,"price":"$9.11768","currency":"USD"},{"qty":1000,"price":"$8.13042","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/094bbb0356c3e8ec363b78f473f751bf.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does the 749193-1 work with 50-position D-sub connectors from Amphenol or other brands?","answer":"Yes, the 749193-1 fits any standard 50-position D-sub connector that uses shell size D, regardless of brand. It also fits high-density 78-position connectors that share the same shell size D envelope."},{"question":"What is the difference between 749193-1 and the non-shielded version in the same series?","answer":"The 749193-1 is a shielded backshell with a zinc die-cast body and nickel over copper plating, providing an EMI/RFI barrier. A non-shielded version would typically be plastic and lack the conductive path for shield termination. The shielded construction is the defining feature of this part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/749193-1","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/te-connectivity-amp-connectors/749193-1 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}}