{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TDA7801","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"TDA7801","canonicalUrl":"https://icboms.com/stmicroelectronics/TDA7801","factsUrl":"https://icboms.com/api/mcp/products/TDA7801","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics TDA7801, Class D quad audio amplifier, 72W x 4 @ 2Ω, 8V–18V supply, I²C/I²S digital inputs, mute, short-circuit and thermal protection, 27-Flexiwatt (formed leads) through-hole package.","salesMarkdown":"The TDA7801 delivers 72W per channel into a 2Ω load across all four channels simultaneously. That rating sets the speaker impedance floor: running 4Ω or 8Ω speakers drops the output proportionally. Digital audio comes in via I²S, bypassing any external DAC and analog preamp stage. The I²C bus handles volume, mute, and diagnostic polling — useful for a head-unit or DSP controller that wants to read thermal or short-circuit flags without extra wiring. The mute and standby features let the system sequence power-up to avoid thumps. ## Package and mounting — 27-Flexiwatt through-hole The 27-Flexiwatt (formed leads) is a through-hole power package with a large metal tab for heat sinking. The vertical orientation variant (27-Flexiwatt Vertical) means the body stands upright on the PCB, which saves board area but requires enough clearance above the board for the tab and any clip-on heat sink. The formed leads are pre-bent for insertion — no manual lead forming needed on the line. Verify the PCB footprint matches the vertical tab layout before committing the layout. ## Sourcing and procurement For engineers evaluating the part, the datasheet covers the full thermal derating curves and application circuit — the I²C register map and I²S timing are documented there. For buyers, an RFQ will return the best available lead time and unit pricing across our supply network.","metaTitle":"STMicroelectronics TDA7801 Class D Quad Audio Amp","metaDescription":"Active ST TDA7801 Class D quad-channel amplifier. 72W x 4 @ 2Ω, 8V–18V supply, I²C/I²S digital inputs, 27-Flexiwatt through-hole. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Class D","Package":"Tube","Features":"Digital Inputs, I²C, I²S, Mute, Short-Circuit and Thermal Protection, Standby","Output Type":"4-Channel (Quad)","Mounting Type":"Through Hole","Package / Case":"27-Flexiwatt (Formed Leads)","lifecycle_stage":"eol_hot","Voltage - Supply":"8V ~ 18V","Operating Temperature":"-40°C ~ 105°C (TA)","Supplier Device Package":"27-Flexiwatt (Vertical)","Max Output Power x Channels @ Load":"72W x 4 @ 2Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.17","priceTiers":[{"qty":1,"price":"$12.17000","currency":"USD"},{"qty":10,"price":"$11.18400","currency":"USD"},{"qty":25,"price":"$10.72080","currency":"USD"},{"qty":100,"price":"$9.56720","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c846f23af164055497da2576c6106ba4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TDA7801/alternatives.json"},"ai":{"faq":[{"question":"Does the TDA7801 have I²C and I²S digital inputs?","answer":"Yes, the TDA7801 includes I²C for control (volume, mute, diagnostics) and I²S for digital audio input, along with mute, standby, and short-circuit/thermal protection."},{"question":"What is the output power of the TDA7801 per channel?","answer":"The TDA7801 delivers 72W per channel into a 2Ω load, quad-channel (4 channels total)."},{"question":"What is the TDA7801 equivalent or replacement?","answer":"There is no direct pin-compatible replacement listed. The TDA7850 (Class AB, 85W x 4) and TDA7563B (Class AB, 75W x 4, I²C) are functionally similar but operate in Class AB, not Class D, and have different thermal profiles and efficiency. Evaluate the system's efficiency and heat sink requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/TDA7801","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/TDA7801 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}