{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"77311-824-21LF","brand":"Amphenol","brandSlug":"amphenol","productSlug":"77311-824-21LF","canonicalUrl":"https://icsourcedirect.com/amphenol/77311-824-21LF","factsUrl":"https://icsourcedirect.com/api/mcp/products/77311-824-21LF","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol ICC (FCI) BergStik® series, Board to Board Header, 77311-824-21LF, 21 circuits, 1 row, 0.100\" (2.54mm) pitch, Through Hole, Solder termination, Gold or GXT™ mating finish.","salesMarkdown":"## 21-Pin Single-Row BergStik — What It Fits The 77311-824-21LF: The 21-position count is an odd number for a single row — most BergStik headers come in even counts or multiples of two. That means the BOM position count is exact: no depopulating or skipping pins. If your design calls for 21 circuits, this is the header. ## 3 A Per Contact — What That Means on a 21-Pin Header With all 21 pins carrying current, the total theoretical capacity is 63 A — but the practical limit is set by the PCB trace width, the number of adjacent pins carrying current simultaneously, and the ambient temperature inside the enclosure. ## Through-Hole Solder — Board-Mount Details The base product number is 77311 — variations in the dash suffix change the post length, plating, or packaging. The -21LF suffix indicates 21 positions with lead-free (RoHS) compliance.","metaTitle":"77311-824-21LF BergStik Header 21 Pos 0.100\" Pitch","metaDescription":"Amphenol ICC BergStik unshrouded header, 21 circuits, 1 row, 0.100\" (2.54mm) pitch, through-hole solder. Gold/GXT™ mating finish, 3A per contact.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Pin Headers, Sockets & Housings"],"specifications":{"Mfr":"Amphenol ICC (FCI)","Style":"Board to Board","Series":"BERGSTIK®","Package":"Bag","Features":"-","Shrouding":"Unshrouded","Termination":"Solder","Applications":"-","Contact Type":"Male Pin","Contact Shape":"Square","Mounting Type":"Through Hole","Connector Type":"Header","Fastening Type":"Push-Pull","Number of Rows":"1","Pitch - Mating":"0.100\\\" (2.54mm)","Product Status":"Active","Voltage Rating":"-","lifecycle_stage":"unknown","Contact Material":"Phosphor Bronze","Insulation Color":"Black","Insulation Height":"0.100\\\" (2.54mm)","Ingress Protection":"-","Base Product Number":"77311","Insulation Material":"Thermoplastic","Number of Positions":"21","Row Spacing - Mating":"-","Contact Finish - Post":"Tin","Contact Length - Post":"0.114\\\" (2.90mm)","Current Rating (Amps)":"3A per Contact","Operating Temperature":"-65°C~125°C","Mated Stacking Heights":"-","Overall Contact Length":"0.480\\\" (12.19mm)","Contact Finish - Mating":"Gold or Gold, GXT™","Contact Length - Mating":"0.266\\\" (6.75mm)","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"78.7µin (2.00µm)","Contact Finish Thickness - Mating":"15.0µin (0.38µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1356","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/b7619af15a6f914d234facab530ef078.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What mates with this 21-pin single-row header?","answer":"The unshrouded design means the mating connector's housing must provide its own polarization or keying — there is no shroud on the header to prevent misalignment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/77311-824-21LF","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/amphenol/77311-824-21LF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-23T20:41:44.623Z","lastPublished":"2026-07-23T20:41:44.623Z","indexable":true}}