{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"640251-4","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"640251-4","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/640251-4","factsUrl":"https://icsourcedirect.com/api/mcp/products/640251-4","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity AMP Connectors SL-156 series, 640251-4, 4-position single-row receptacle housing, 0.156\" (3.96mm) pitch, natural nylon, free-hanging inline, crimp termination, contacts not included.","salesMarkdown":"The 640251-4 is a 4-position single-row receptacle housing on 0.156\" (3.96mm) pitch — the same pitch as the SL-156 series pin headers. That means the board layout for the mating header is set at 3.96mm centre-to-centre, and the housing will align only with a matching 4-position header of the same pitch. ## Sourcing the crimp terminals separately Without the terminals, the housing is just a shell; the harness won't conduct. Termination is crimp, so the wire gauge and tooling for the SL-156 terminal determine the current capacity. The housing itself does not add a current limit beyond what the terminal and wire can handle. ## Free-hanging inline mounting and mating The connector type is receptacle, accepting a female socket contact.","metaTitle":"640251-4 TE Connectivity SL-156 Receptacle Housing 4","metaDescription":"640251-4 TE Connectivity AMP SL-156 series 4-position single-row receptacle housing, 0.156\" (3.96mm) pitch, natural nylon, free-hanging, crimp termination.","metaKeywords":null},"attributes":{"series":"SL-156","packageCase":null,"mountingType":null,"rohsStatus":"RoHS Compliant","productStatus":"Active","categoryPath":["Wire-to-Board Connectors","Connector Housings"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Note":"Contacts Not Included","Color":"Natural","Pitch":"0.156\\\" (3.96mm)","Series":"SL-156","Package":"Bulk","Features":"-","Row Spacing":"-","Contact Type":"Female Socket","Mounting Type":"Free Hanging (In-Line)","Connector Type":"Receptacle","Fastening Type":"-","Number of Rows":"1","Product Status":"Active","lifecycle_stage":"unknown","Base Product Number":"640251","Contact Termination":"Crimp","Insulation Material":"Polyamide (PA), Nylon","Number of Positions":"4","Operating Temperature":"-55°C ~ 105°C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2000","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.20000","currency":"USD"},{"qty":10,"price":"$0.17100","currency":"USD"},{"qty":25,"price":"$0.17000","currency":"USD"},{"qty":50,"price":"$0.16800","currency":"USD"},{"qty":100,"price":"$0.15530","currency":"USD"},{"qty":250,"price":"$0.12760","currency":"USD"},{"qty":500,"price":"$0.12052","currency":"USD"},{"qty":1000,"price":"$0.11201","currency":"USD"},{"qty":2500,"price":"$0.10846","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/5955c3cb0fb4a562bfe0ff9747625590.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the pitch of 640251-4?","answer":"The pitch is 0.156\" (3.96mm), centre-to-centre between adjacent positions. This is the same pitch as the SL-156 header series."},{"question":"Does 640251-4 include contacts?","answer":"No. The note on the part states 'Contacts Not Included'. The housing is sold empty; you must order the mating crimp terminals separately."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/640251-4","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/te-connectivity-amp-connectors/640251-4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:46:37.382Z","lastPublished":"2026-07-22T19:46:37.382Z","indexable":true}}