{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"93939-454HLF","brand":"Amphenol","brandSlug":"amphenol","productSlug":"93939-454HLF","canonicalUrl":"https://icsourcedirect.com/amphenol/93939-454HLF","factsUrl":"https://icsourcedirect.com/api/mcp/products/93939-454HLF","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol FCI BERGSTIK® II header, 93939-454HLF, 54 positions, 2 rows, 0.100\" (2.54mm) pitch, 5A, tin-plated, through-hole right-angle, unshrouded.","salesMarkdown":"The Amphenol FCI 93939-454HLF is a 54-position, dual-row BERGSTIK® II unshrouded header with a 0.100\" (2.54mm) pitch — the standard grid for legacy and cost-sensitive board-to-board interconnects. All 54 positions are loaded, so the footprint matches the circuit count one-to-one. ## Tin plating and mating cycles The 100.0µin (2.54µm) tin finish on the mating surface is a heavy-duty layer — thicker than the typical 30-50µin flash tin found on commodity headers. For a header that mates once in assembly and stays connected, the tin plating keeps the per-unit cost down while delivering adequate contact resistance over the product life. ## Board layout and footprint The 0.100\" row spacing matches the mating pitch, so the PCB footprint is a straightforward 2 x 27 grid of 0.040\" square pins. The 0.120\" (3.05mm) post length after the board surface gives enough solder tail for a standard 0.062\" PCB with through-hole wave soldering. The BERGSTIK® II series is a broad, multi-sourced platform, so alternate pin counts and plating options exist within the same footprint family if a BOM revision is needed.","metaTitle":"93939-454HLF BERGSTIK II Header, 54 Pos, 0.100\" Pitch, 5A","metaDescription":"Amphenol FCI 93939-454HLF BERGSTIK® II header, 54 positions, 0.100\" pitch, 5A, tin-plated, right-angle through-hole. Active production, sourced to order.","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® II","Package":"Bag","Features":"-","Shrouding":"Unshrouded","Termination":"Solder","Applications":"-","Contact Type":"Male Pin","Contact Shape":"Square","Mounting Type":"Through Hole, Right Angle","Connector Type":"Header","Fastening Type":"Push-Pull","Number of Rows":"2","Pitch - Mating":"0.100\\\" (2.54mm)","Product Status":"Active","Voltage Rating":"110V","lifecycle_stage":"unknown","Contact Material":"Phosphor Bronze","Insulation Color":"Black","Insulation Height":"0.190\\\" (4.83mm)","Ingress Protection":"-","Base Product Number":"93939","Insulation Material":"-","Number of Positions":"54","Row Spacing - Mating":"0.100\\\" (2.54mm)","Contact Finish - Post":"Tin","Contact Length - Post":"0.120\\\" (3.05mm)","Current Rating (Amps)":"5A","Operating Temperature":"-","Mated Stacking Heights":"-","Overall Contact Length":"-","Contact Finish - Mating":"Tin","Contact Length - Mating":"0.160\\\" (4.06mm)","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"-","Contact Finish Thickness - Mating":"100.0µin (2.54µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.3929","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/f07eb009696ffe298bd4359a478f2e44.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/93939-454HLF/alternatives.json"},"ai":{"faq":[{"question":"What is the pitch and position count of 93939-454HLF?","answer":"The 93939-454HLF is a 54-position, dual-row header on a 0.100\" (2.54mm) pitch with all positions loaded."},{"question":"Can 93939-454HLF be used with IDC connectors?","answer":"This is an unshrouded male pin header — it mates with standard 0.100\" pitch IDC socket connectors that accept the square pin grid. The tin plating is compatible with the tin-plated contacts in most IDC receptacles."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/93939-454HLF","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/93939-454HLF 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}}