{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"12DB-4K(LF)","brand":"JST","brandSlug":"jst","productSlug":"12DB-4K~1LF~2","canonicalUrl":"https://icsourcedirect.com/jst/12DB-4K~1LF~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/12DB-4K(LF)","rawCanonicalId":null},"summary":{"shortDescription":"JST DB series IDC connector, 12 positions, 1 row, 0.098\" (2.50 mm) pitch, press-fit through-hole mount, closed end, 24-28 AWG stranded, tin-lead contact finish, black, bulk.","salesMarkdown":"## Press-Fit IDC Header for Discrete Wire Harnesses The JST 12DB-4K(LF) is a 12-position, single-row IDC connector from the DB series, designed for terminating individual stranded wires directly into the connector body without pre-stripping. The closed-end design provides a positive stop for the wire during insertion, preventing over-insertion that could damage the contact or short to adjacent circuits. The housing is black, and the contacts carry a tin-lead finish — a plating choice that suits moderate mating-cycle applications where cost matters more than cycle life. ## Mounting and Termination — Press-Fit vs Solder The press-fit termination method is the key differentiator here. Instead of wave-soldering the pins, the connector is pressed into the board using a pneumatic or hand arbor press. The compliant pin geometry deforms to fill the plated hole, creating a gas-tight connection that meets the same reliability standards as soldered joints. This makes the 12DB-4K(LF) a good fit for backplanes or multi-board assemblies where rework or field replacement of individual connectors is expected — a press-fit connector can be extracted and replaced without desoldering. On the cable side, the IDC termination requires a simple hand or bench press tool to push the unstripped wires into the insulation-displacement slots. The closed end acts as a depth stop, so the assembler gets consistent insertion depth across all 12 positions without measuring. The 24-28 AWG stranded range covers common ribbon cable and discrete wire bundles used in internal point-to-point wiring.","metaTitle":"JST 12DB-4K(LF) IDC Connector, 12 Position, 2.50 mm Pitch","metaDescription":"JST 12DB-4K(LF) DB series IDC connector, 12 positions, 2.50 mm pitch, press-fit through-hole mount, closed end, 24-28 AWG. Active lifecycle, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Wire-to-Board Connectors"],"specifications":{"Mfr":"JST Sales America Inc.","Color":"Black","Series":"DB","Package":"Bulk","Features":"Closed End","Wire Gauge":"24-28 AWG, Stranded","Cable Pitch":"0.098\\\" (2.50mm)","Row Spacing":"-","Mounting Type":"Through Hole, Press-Fit","Connector Type":"Individual Wires","Contact Finish":"Tin-Lead","Number of Rows":"1","Product Status":"Active","lifecycle_stage":"unknown","Board-Side Pitch":"0.098\\\" (2.50mm)","Cable Termination":"IDC","Base Product Number":"12DB","Number of Positions":"12","Contact Finish Thickness":"-","Number of Positions Loaded":"All"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6284","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/358752ccd8166e42767e2363344ec79a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the cable pitch of the JST 12DB-4K(LF)?","answer":"The cable pitch is 0.098\" (2.50 mm), which matches the board-side pitch, so the ribbon cable or discrete wire spacing aligns directly with the PCB footprint."},{"question":"What wire gauge does the 12DB-4K(LF) support?","answer":"It supports 24-28 AWG stranded wire, which covers the typical signal and low-power range for internal harness applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/jst/12DB-4K~1LF~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/jst/12DB-4K~1LF~2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:52:26.615Z","lastPublished":"2026-08-11T15:52:26.615Z","indexable":true}}