{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"761553304","brand":"Molex","brandSlug":"molex","productSlug":"761553304","canonicalUrl":"https://icsourcedirect.com/molex/761553304","factsUrl":"https://icsourcedirect.com/api/mcp/products/761553304","rawCanonicalId":null},"summary":{"shortDescription":"Molex Impact 76155 series header, male pins, 72 positions, 12 rows, 0.053\" (1.35 mm) pitch, press-fit termination, gold 30.0 µin plating, 30 V, UL94 V-0, black, Guide Left keying.","salesMarkdown":"## 72-Position Backplane Header, 0.053\" Pitch, Press-Fit — Impact 76155 Series The Molex Impact 761553304 is a 72-position, 12-row header in the Impact 76155 series, designed for high-density differential-pair backplane routing. The 0.053\" (1.35 mm) pitch packs 24 differential pairs into a compact footprint — the tightest column spacing in the Impact family, which means the board layout engineer has to watch trace-width and spacing limits on inner layers to keep impedance control. Press-fit termination eliminates the wave-solder step, so the header presses into plated through-holes on a backplane and stays there through rework cycles without solder-joint fatigue. Rated 30 V — this is a signal-path connector, not a power rail. The Guide Left keying (offset guide pin) forces mating with a Guide Left receptacle only, preventing a 180° mis-mate or wrong-row insertion on the production line. ## Press-Fit Termination — Solderless Backplane Build That makes this header a fit for high-reliability backplane assemblies where rework access matters: a damaged pin can be staked out and replaced without desoldering a whole column. ## Guide Left Keying — Mating Alignment Detail The 'Impact, Guide Left' designation means the header carries an offset guide pin on the left side (viewed from the mating face). This mates only with a Guide Left receptacle — the keying prevents a 180° flip and ensures the 24 differential pairs land on the correct column. On a production line where multiple Impact headers sit side-by-side, the guide-pin offset also prevents inserting a 6-column header into a 4-column receptacle, or vice versa.","metaTitle":"Molex Impact 761553304 Header, 72 Pos, 0.053\" Pitch","metaDescription":"Molex Impact 76155 series header, 72 positions, 12 rows, 0.053\" pitch, press-fit termination, 30 V, gold plating. Active production — quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circular Connectors","Specialty Circular"],"specifications":{"Mfr":"Molex","Color":"Black","Pitch":"0.053\\\" (1.35mm)","Series":"Impact 76155","Package":"Box","Features":"-","Termination":"Press-Fit","Mounting Type":"Through Hole","Connector Type":"Header, Male Pins","Contact Finish":"Gold","Number of Rows":"12","Product Status":"Active","Voltage Rating":"30V","Connector Style":"Impact, Guide Left","Connector Usage":"-","lifecycle_stage":"unknown","Number of Columns":"6","Number of Positions":"72","Current Rating (Amps)":"-","Operating Temperature":"-55°C ~ 85°C","Contact Layout, Typical":"24 Differential Pairs","Contact Finish Thickness":"30.0µin (0.76µm)","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.9700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/4967461d9750ba3053835bc545f3b351.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/761553304/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/761553304","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/molex/761553304 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}}