{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7221-1BH22-0XA8","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7221-1BH22-0XA8","canonicalUrl":"https://aoctrl.com/siemens/6ES7221-1BH22-0XA8","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7221-1BH22-0XA8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-200 CN, Digital Input Module EM 221, 6ES7221-1BH22-0XA8, 16 DI, 24V DC, power loss typ. 3W, depth 62 mm, width 71.2 mm, height 80 mm.","salesMarkdown":"## Spare part module for S7-200 CN systems The Siemens 6ES7221-1BH22-0XA8 is a SIMATIC S7-200 CN digital input module EM 221, designated as a spare part for the S7-22X CPU line. It provides 16 sinking/sourcing inputs at 24 V DC, with a typical power loss of 3 W and a per-channel signal current of 4 mA. The module is approved only for CE marking, consistent with the S7-200 CN regional variant. This module is a direct fit for existing S7-200 CN racks, but only when the customer's approved vendor list (AVL) explicitly includes this spare part designation. Its form factor (62 mm depth, 71.2 mm width, 80 mm height) matches the earlier S7-200 CN I/O footprint. ## Physical fit and integration note The module measures 62 mm deep, 71.2 mm wide, and 80 mm high. Per channel typical signal current is 4 mA and total power loss is 3 W.","metaTitle":"Siemens 6ES7221-1BH22-0XA8 Digital Input Module, 16 DI, 24V","metaDescription":"6ES7221-1BH22-0XA8 SIMATIC S7-200 CN digital input EM 221 spare part, 16 DI 24V DC, power loss typ. 3W, depth 62 mm, lifecycle current.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Digital Input Modules"],"specifications":{"Depth":"62 mm","Width":"71.2 mm","title":"6ES7221-1BH22-0XA8","Height":"80 mm","description":"*** spare part *** SIMATIC S7-200 CN, Digital input EM 221, only for S7-22X CPU, 16 DI, 24 V DC, sinking-sourcing this S7-200 CN product only has CE approval","lifecycle_stage":"current","Power loss, typ.":"3 W","For Signal \"1\", Typ.":"4 mA","Type of input voltage":"DC","Number of digital inputs":"16"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$133.00 – $152.40","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4244e6711ca4776ca4f58c20846e85d2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=272159&mlfb=6ES7221-1BH22-0XA8"},"ai":{"faq":[{"question":"Can I replace 6ES7221-1BH22-0XA8 with 6ES7221-1BH32-0XB0?","answer":"No, the 6ES7221-1BH32-0XB0 has different dimensions (75x45x100 mm vs 62x71.2x80 mm) and a different set of approvals, requiring mechanical adaption and a deviation per the approved manufacturer list."},{"question":"What compliance approvals does it carry?","answer":"Only CE approval is recorded; no RoHS, UL, CSA, or other marks appear in the specifications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7221-1BH22-0XA8","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/6ES7221-1BH22-0XA8 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}