{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BA3121F-E2","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"BA3121F-E2","canonicalUrl":"https://icboms.com/rohm/BA3121F-E2","factsUrl":"https://icboms.com/api/mcp/products/BA3121F-E2","rawCanonicalId":null},"summary":{"shortDescription":"ROHM BA3121F-, Class AB stereo audio amplifier IC, 2-channel output, 4V to 18V supply, -30°C to 85°C, 8-SOP surface-mount package.","salesMarkdown":"## Class AB stereo line driver in 8-SOP The BA3121F-E2: The BA3121F- is a Class AB stereo audio amplifier IC with two output channels in an 8-SOP surface-mount package. It operates from a 4 V to 18 V supply rail. ## Supply range and thermal headroom Class AB topology means linear dissipation: at 18 V supply and moderate output current, the 8-SOP package's thermal impedance limits continuous power. The wide 4 V to 18 V window lets a single BOM line serve 5 V and 12 V product variants — no separate regulator needed. For higher output power (9 W class), the BD28412MUV- Class D alternative trades linearity for efficiency.","metaTitle":"BA3121F-E2 Class AB Stereo Amplifier, 8-SOP, Active","metaDescription":"ROHM BA3121F-E2 Class AB stereo audio amplifier IC in 8-SOP. 2-channel output, 4V to 18V supply, -30°C to 85°C. Active lifecycle, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Class AB","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"2-Channel (Stereo)","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.173\\\", 4.40mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4V ~ 18V","Operating Temperature":"-30°C ~ 85°C (TA)","Supplier Device Package":"8-SOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.58","priceTiers":[{"qty":1,"price":"$1.58000","currency":"USD"},{"qty":10,"price":"$1.41600","currency":"USD"},{"qty":25,"price":"$1.33560","currency":"USD"},{"qty":100,"price":"$1.13790","currency":"USD"},{"qty":250,"price":"$1.06848","currency":"USD"},{"qty":500,"price":"$0.93492","currency":"USD"},{"qty":1000,"price":"$0.77465","currency":"USD"},{"qty":2500,"price":"$0.75600","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1bf3d7a7687bd3bebcd408274189e99d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BA3121F-E2/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for BA3121F-?","answer":"The BH3547F- is a Class AB stereo amplifier in a similar package, adding mute and thermal protection. Its supply voltage is 4.5 V (nominal) and temperature range -25°C to 75°C — check these against your design before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/BA3121F-E2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/BA3121F-E2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}