{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"YLR-21V","brand":"JST","brandSlug":"jst","productSlug":"YLR-21V","canonicalUrl":"https://icsourcedirect.com/jst/YLR-21V","factsUrl":"https://icsourcedirect.com/api/mcp/products/YLR-21V","rawCanonicalId":null},"summary":{"shortDescription":"JST YL Series, Receptacle Housing, 21 Positions, 3 Rows, 0.177\" (4.50mm) Pitch, Free Hanging (In-Line), Crimp Termination, Latch Holder, White, PA66, Bulk.","salesMarkdown":"## 21-Position 3-Row Receptacle for Multi-Conductor Harnesses The JST YLR-21V is a 21-circuit receptacle housing from the YL series, built for wire-to-wire or wire-to-board connections where you need a dense 3-row layout at a 0.177\" (4.50mm) pitch. It's a free-hanging (in-line) housing that takes male pin crimp terminals — you order the contacts separately. ## 3-Row Layout vs 2-Row Siblings The YLR-21V uses a 3-row contact arrangement, unlike the 2-row YLR-16V (16 positions) and YLR-06V (6 positions). That third row lets you pack 21 circuits into a housing that's wider than a 2-row part but shorter in length — useful when your harness breakout needs more circuits than a 2-row can fit at the same pitch. The YLR-09V also uses 3 rows but only carries 9 positions, so the 21V gives you the full row density for a high-circuit-count bundle. Mates with the matching YL series pin header (male pin side) at the same 4.50mm pitch. The latch holder locks audibly when fully seated — gives you vibration resistance without needing a screw or tool. The free-hanging design lets you route the harness without a board mount.","metaTitle":"JST YLR-21V YL Series Receptacle Housing, 21 Pos, 4.50mm","metaDescription":"JST YLR-21V YL series receptacle housing, 21 positions, 3 rows, 4.50mm pitch. White PA66, latch holder, crimp termination. Contacts not included.","metaKeywords":null},"attributes":{"series":"YL","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Wire-to-Board Connectors","Connector Housings"],"specifications":{"Mfr":"JST Sales America Inc.","Note":"Contacts Not Included","Color":"White","Pitch":"0.177\\\" (4.50mm)","Series":"YL","Package":"Bulk","Features":"-","Row Spacing":"-","Contact Type":"Male Pin","Mounting Type":"Free Hanging (In-Line)","Connector Type":"Receptacle","Fastening Type":"Latch Holder","Number of Rows":"3","Product Status":"Active","lifecycle_stage":"unknown","Base Product Number":"YLR","Contact Termination":"Crimp","Insulation Material":"Polyamide (PA66), Nylon 6/6","Number of Positions":"21","Operating Temperature":"-25°C ~ 90°C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3500","priceTiers":[{"qty":1,"price":"$1.35000","currency":"USD"},{"qty":10,"price":"$1.14400","currency":"USD"},{"qty":25,"price":"$1.09680","currency":"USD"},{"qty":50,"price":"$1.07360","currency":"USD"},{"qty":100,"price":"$1.02690","currency":"USD"},{"qty":250,"price":"$0.93352","currency":"USD"},{"qty":500,"price":"$0.84016","currency":"USD"},{"qty":1000,"price":"$0.74682","currency":"USD"},{"qty":2500,"price":"$0.67680","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/20fa4e32a4b6388dae715a4f9dc920b1.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/YLR-21V/alternatives.json"},"ai":{"faq":[{"question":"Does YLR-21V come with contacts?","answer":"No — the housing ships without contacts (listed as Contacts Not Included). You need to order the matching YL series male pin crimp terminals separately."},{"question":"What header mates with YLR-21V?","answer":"Any JST YL series male pin header at 0.177\" (4.50mm) pitch with the same 21-position, 3-row layout and latch-compatible fastening. The latch holder on the housing engages the header's locking ramp."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/jst/YLR-21V","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/YLR-21V when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-07T04:42:04.656Z","lastPublished":"2026-09-07T04:42:04.656Z","indexable":true}}