{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"640251-6","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"640251-6","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/640251-6","factsUrl":"https://icsourcedirect.com/api/mcp/products/640251-6","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity SL-156 series receptacle housing, 640251-6, 6 positions, 1 row, 0.156\" (3.96mm) pitch, natural nylon, free-hanging (in-line), crimp termination, female socket contacts, -55°C to 105°C.","salesMarkdown":"The 0.156\" (3.96mm) pitch gives enough spacing to route 18-22 AWG wire without crowding the adjacent cavity — common for appliance, HVAC, and industrial control harnesses where the wire bundle feeds a PCB header. ## The Contacts Are Not in the Bag — Order Them Separately No terminal in the bag means the BOM needs two lines: one for the housing, one for the contacts. The housing accepts the standard SL-156 crimp socket, which takes 18-22 AWG stranded wire. ## Mating Half and Locking — What Snaps In This receptacle mates with the SL-156 series pin header, typically a vertical or right-angle through-hole header on the PCB. No secondary lock or screw is needed for a cabinet environment; the ramp holds against moderate vibration. If the harness sees constant flex or machine vibration, a wire strain relief or cable tie point near the connector is worth adding. ## 640251-6 vs the 5-Position Sibling The 640251-6 is the 6-position version of the same SL-156 housing family. The 5-position 640251-5 shares the same 0.156\" pitch, natural nylon body, and free-hanging crimp format — the only difference is the cavity count. If your harness needs six circuits, the 640251-6 is the match; the 5-position version leaves one circuit unpopulated and wastes a cavity. No other spec changes between the two. No official second-source cross-reference is on record; the 1-2069882-6 from the same series is a 2-row, 5.08mm pitch part and is not a direct fit.","metaTitle":"TE Connectivity 640251-6 SL-156 Receptacle Housing, 6 Pos","metaDescription":"TE Connectivity 640251-6 SL-156 receptacle housing, 6 positions, 0.156\" (3.96mm) pitch. Natural nylon, crimp termination, free-hanging.","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":"6","Operating Temperature":"-55°C ~ 105°C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2600","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.26000","currency":"USD"},{"qty":10,"price":"$0.22400","currency":"USD"},{"qty":25,"price":"$0.22360","currency":"USD"},{"qty":50,"price":"$0.22060","currency":"USD"},{"qty":100,"price":"$0.20390","currency":"USD"},{"qty":250,"price":"$0.16760","currency":"USD"},{"qty":500,"price":"$0.15830","currency":"USD"},{"qty":1000,"price":"$0.14713","currency":"USD"},{"qty":2500,"price":"$0.14248","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/5955c3cb0fb4a562bfe0ff9747625590.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy 640251-6 and what is the lead time?","answer":"Submit an RFQ for your quantity and delivery window."},{"question":"What is the mating connector for 640251-6?","answer":"The 640251-6 mates with an SL-156 series pin header, typically a vertical or right-angle through-hole header soldered to a PCB. The housing's integral locking ramp engages with the header's detent for a positive latch."},{"question":"Is 640251-6 RoHS compliant?","answer":"Yes, the 640251-6 is RoHS compliant per the current directive."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/640251-6","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/640251-6 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}}