{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF12B(3.5)-40DP-0.5V(86)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF12B~13.5~2-40DP-0.5V~186~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF12B~13.5~2-40DP-0.5V~186~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF12B(3.5)-40DP-0.5V(86)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose DF12 series, 40 Position, 0.50mm Pitch, 2 Row, Header Outer Shroud Contacts, Surface Mount, Gold, 3.5mm Stacking Height, Solder Retention.","salesMarkdown":"## Hirose DF12B(3.5)-40DP-0.5V(86) — 0.50mm Pitch Mezzanine Header at 3.5mm Stack The Hirose DF12B(3.5)-40DP-0.5V(86) is a 40-position, 2-row SMT header from the DF12 series of board-to-board mezzanine connectors. It uses a 0.020\" (0.50mm) pitch and is designed for a mated stacking height of 3.5mm, making it a compact interconnect for parallel PCB stacking in space-constrained assemblies. The connector type is Header, Outer Shroud Contacts — the shroud protects the mating interface and guides alignment during board mating. ## Solder Retention for Reflow Reliability The retention tabs resist shear forces from the mating cable or board, preventing the connector from lifting off the pads during thermal cycling or mechanical shock. ## Obsolete — Sourcing the Replacement The DF12B(3.5)-40DP-0.5V(86) is marked Obsolete. Hirose has discontinued this exact order code. Confirm the mated stacking height and position count match the board layout before committing; the 3.5mm stack is specific to the DF12B(3.5) variant and may not be interchangeable with other DF12 stack heights. The 0.50mm pitch drives the PCB footprint — the pad width and spacing are tight enough that a standard FR-4 board with 1 oz copper can route one trace between pads on the outer layers, but inner-layer breakout may require finer line widths or additional layers. The 3.5mm mated stack height sets the z-axis clearance between the two PCBs; the header's height above board is 0.110\" (2.80mm), so the mating receptacle must add the remaining 0.7mm to reach the full stack. The 2-row layout with 40 positions means 20 contacts per row, which keeps the connector body length manageable — roughly 20mm — for a compact board edge or mezzanine layout.","metaTitle":"Hirose DF12B(3.5)-40DP-0.5V(86) 40-Position 0.50mm Header","metaDescription":"Hirose DF12B(3.5)-40DP-0.5V(86) 0.50mm pitch, 40-position, 2-row SMT header with 3.5mm stacking height. Gold-plated contacts, solder retention.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Board-to-Board Connectors"],"specifications":{"Mfr":"Hirose Electric Co Ltd","Pitch":"0.020\\\" (0.50mm)","Series":"DF12","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Solder Retention","Mounting Type":"Surface Mount","Connector Type":"Header, Outer Shroud Contacts","Contact Finish":"Gold","Number of Rows":"2","Product Status":"Obsolete","lifecycle_stage":"unknown","Height Above Board":"0.110\\\" (2.80mm)","Number of Positions":"40","Mated Stacking Heights":"3.5mm","Contact Finish Thickness":"8.00µin (0.203µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.7600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/801352e576480b4c19254a5dc0f8f8a7.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy DF12B(3.5)-40DP-0.5V(86) available via RFQ confirmation?","answer":"The DF12B(3.5)-40DP-0.5V(86) is obsolete and no longer in factory production. It is sourced through independent distribution on a quoted-to-order basis against an RFQ."},{"question":"What is the compatible mated stacking height for DF12B(3.5)-40DP-0.5V(86)?","answer":"The mated stacking height is 3.5mm. This is set by the DF12B(3.5) variant designation in the order code — the mating receptacle must be from the same DF12B(3.5) stack height family to achieve the correct board spacing."},{"question":"Does DF12B(3.5)-40DP-0.5V(86) have solder retention features?","answer":"Yes, the connector includes solder retention features — integral board locks that anchor the header to the PCB during reflow and resist mechanical shear from the mating board or cable strain."},{"question":"What is the best replacement for DF12B(3.5)-40DP-0.5V(86)?","answer":"A pin-compatible alternative would need to match the 0.50mm pitch, 40 positions, 2 rows, 3.5mm stacking height, and SMT termination with solder retention. Without a documented cross-reference, the replacement must be evaluated against the board layout — confirm the footprint and stack height before specifying."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF12B~13.5~2-40DP-0.5V~186~2","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/hirose-electric-co-ltd/DF12B~13.5~2-40DP-0.5V~186~2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:25.888Z","lastPublished":"2026-07-20T14:34:25.888Z","indexable":true}}