{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"79821-120HLF","brand":"Amphenol","brandSlug":"amphenol","productSlug":"79821-120HLF","canonicalUrl":"https://icsourcedirect.com/amphenol/79821-120HLF","factsUrl":"https://icsourcedirect.com/api/mcp/products/79821-120HLF","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol BERGSTIK® II, 79821-120HLF, Board to Board, Header, 20 Positions, 2 Rows, 0.100\" (2.54mm) Pitch, Through Hole, Solder, Unshrouded, Gold or GXT™ Plating.","salesMarkdown":"It uses a 0.100\" (2.54mm) pitch on both the pin-to-pin and row spacing, which keeps the footprint compatible with standard 0.100\" grid prototyping and production boards. The through-hole solder termination and 0.200\" (5.08mm) post length suit it for conventional wave-solder assembly or hand-soldering into plated through-holes. The 30.0µin (0.76µm) gold or GXT™ plating on the mating surface provides a corrosion-resistant, low-resistance interface for repeated mating cycles — the gold thickness is well into the range that handles regular board separation and reconnection without fretting. This header mates with a standard BERGSTIK II female socket or a dual-row receptacle that accepts 0.025\" square pins on 0.100\" centers. The overall contact length of 0.730\" (18.54mm) splits into a 0.430\" (10.92mm) mating interface and a 0.200\" (5.08mm) solder tail — the mated stack height depends on the chosen receptacle's insulation height. With a typical 0.100\" (2.54mm) receptacle body, the board-to-board gap lands around 0.530\" (13.46mm) before accounting for board thickness.","metaTitle":"Amphenol BERGSTIK II 79821-120HLF, 20-Pos Unshrouded Header","metaDescription":"Amphenol BERGSTIK® II 79821-120HLF unshrouded header, 20 positions, 2 rows, 0.100\" pitch, through-hole solder, gold 30.0µin plating, rated 5A.","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","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":"0.100\\\" (2.54mm)","Ingress Protection":"-","Base Product Number":"79821","Insulation Material":"-","Number of Positions":"20","Row Spacing - Mating":"0.100\\\" (2.54mm)","Contact Finish - Post":"-","Contact Length - Post":"0.200\\\" (5.08mm)","Current Rating (Amps)":"5A","Operating Temperature":"-","Mated Stacking Heights":"-","Overall Contact Length":"0.730\\\" (18.54mm)","Contact Finish - Mating":"Gold or Gold, GXT™","Contact Length - Mating":"0.430\\\" (10.92mm)","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"-","Contact Finish Thickness - Mating":"30.0µin (0.76µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.3700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/c8f0394c32e820c9621af8eb0b9440c3.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/79821-120HLF/alternatives.json"},"ai":{"faq":[{"question":"What is 79821-120HLF's listed style (Board to Board) on this component line?","answer":"The style is Board to Board, meaning it is designed for interconnecting two PCBs directly without a cable or wire harness."},{"question":"What is 79821-120HLF's listed series (BERGSTIK® II) on this component line?","answer":"The series is BERGSTIK® II, a family of unshrouded pin headers from Amphenol with 0.100\" pitch, available in single and dual rows with various plating options."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/79821-120HLF","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/79821-120HLF 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}}