{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6AG1221-3AD30-5XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6AG1221-3AD30-5XB0","canonicalUrl":"https://aoctrl.com/siemens/6AG1221-3AD30-5XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6AG1221-3AD30-5XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIPLUS S7-1200 SB 1221 signal board, 4 digital inputs 5 V DC 200 kHz, conformal coating, -40…+70 °C, 38 x 62 x 21 mm.","salesMarkdown":"## What the temperature range and coating mean for your panel The 6AG1221-3AD30-5XB0: This is the SIPLUS variant of the standard 6ES7221-3AD30-0XB0, with conformal coating and a -40 to +70 °C operating range — the standard industrial module tops out at 60 °C and lacks the coating. The conformal coating (IPC-CC-830A Class A) and resistance to coolants, lubricants, diesel, and oil droplets mean it survives in lift stations, washdown zones, and anywhere H2S or salt spray is present — the standard module won't hold up in those conditions. ## Four high-speed inputs — what they actually do Four digital inputs at 5 V DC, each drawing 15 mA typical at signal '1', rated for 200 kHz counting — these are high-speed counter inputs, not general-purpose 24 V discrete inputs. At 200 kHz per channel, this board handles encoder feedback, flowmeter pulses, or fast proximity sensor edges that a standard 24 V input module would miss entirely. Typical power loss is 1 W — negligible thermal load in a sealed enclosure, but worth noting if you're packing multiple signal boards into a confined panel. ## Altitude derating and environmental resilience Rated for installation up to 5000 m above sea level, with a derating curve: full temperature range up to 2000 m, then -10 K at 2000-3500 m, and -20 K at 3500-5000 m — relevant for mining and high-altitude processing plants. Meets ANSI/ISA-71.04 GX level for corrosive gases (excluding trichlorethylene), plus salt spray and oil exposure — this is the module you spec for the wet well, not the one that lives in a climate-controlled control room. Protection against fouling per EN 60664-3 Type 1 — the conformal coating maintains creepage distances in polluted atmospheres. ## Sourcing and fit for the S7-1200 rack Fits the S7-1200 signal board slot (38 mm wide, 62 mm tall, 21 mm deep) — same footprint as the standard SB 1221, so it swaps in without panel rework. No pin-compatible second-source exists for this SIPLUS variant — the standard 6ES7221-3AD30-0XB0 is the base module but lacks the coating and extended temperature range.","metaTitle":"Siemens 6AG1221-3AD30-5XB0 SIPLUS S7-1200 SB 1221, 4DI","metaDescription":"Siemens 6AG1221-3AD30-5XB0 SIPLUS S7-1200 signal board, 4 digital inputs 5 V DC 200 kHz, conformal coating, -40 to +70 °C, active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLC I/O & Expansion Modules"],"specifications":{"Max.":"70 °C","Min.":"-40 °C","Depth":"21 mm","Width":"38 mm","title":"6AG1221-3AD30-5XB0","Height":"62 mm","description":"SIPLUS S7-1200 SB 1221 4DI based on 6ES7221-3AD30-0XB0 with conformal coating, -40…+60 °C, start up -25 °C, digital inputs 4 DI 5 V DC 200 kHz","lifecycle_stage":"current","Power loss, typ.":"1 W","For Signal \"1\", Typ.":"15 mA","Type of input voltage":"DC","Number of digital inputs":"4","Installation altitude above sea level, max.":"5 000 m","Protection against fouling acc. to EN 60664-3":"Yes; Type 1 protection","Ambient air temperature-barometric pressure-altitude":"Tmin ... Tmax at 1 140 hPa ... 795 hPa (-1 000 m ... +2 000 m) // Tmin ... (Tmax - 10 K) at 795 hPa ... 658 hPa (+2 000 m ... +3 500 m) // Tmin ... (Tmax -20 K) at 658 hPa ... 540 hPa (+3 500 m ... +5 000 m)","Resistant to commercially available coolants and lubricants":"Yes; Incl. diesel and oil droplets in the air","Environmental conditions for process, measuring and control systems acc. to ANSI/ISA-71.04":"Yes; Level GX group A/B (excluding trichlorethylene; harmful gas concentrations up to the limits of EN 60721-3-3 class 3C4 permissible); level LC3 (salt spray) and level LB3 (oil)","Qualification and Performance of Electrical Insulating Compound for Printed Board Assemblies according to IPC-CC-830A":"Yes; Conformal coating, Class A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3d0af7fad4ffad32ad1f4324f9f9a230.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=147828&mlfb=6AG1221-3AD30-5XB0"},"ai":{"faq":[{"question":"Does 6AG1221-3AD30-5XB0 have conformal coating?","answer":"Yes — conformal coating per IPC-CC-830A Class A, plus resistance to coolants, lubricants, diesel, oil droplets, salt spray, and corrosive gases per ANSI/ISA-71.04 GX."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6AG1221-3AD30-5XB0","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/6AG1221-3AD30-5XB0 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}}