{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LD1117AV33","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"LD1117AV33","canonicalUrl":"https://icboms.com/stmicroelectronics/LD1117AV33","factsUrl":"https://icboms.com/api/mcp/products/LD1117AV33","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics LD1117AV33, fixed 3.3 V output LDO, 1 A, TO-220-3 through-hole package, 1.3 V dropout max at full load, 75 dB PSRR at 120 Hz.","salesMarkdown":"## Fixed 3.3 V rail for noise-sensitive loads The LD1117AV33 is a fixed 3.3 V output LDO from STMicroelectronics, rated for 1 A continuous output. The 1.3 V maximum dropout at 1 A means the input rail must stay above 4.6 V to maintain regulation at full load. If the input sags below that, the output follows — sequence the rails with enough headroom. ## Dropout and quiescent budget for the BOM At 1 A output, the quiescent current is 10 mA. That 10 mA is drawn from the input regardless of load — it is not negligible in battery-powered designs but is typical for a 1 A LDO of this generation. The thermal budget in the TO-220 package at 1 A with 1.3 V dropout dissipates 1.3 W; a heatsink is required for ambient temperatures above 50°C unless the load is intermittent. Protection features include over-current and over-temperature shutdown, which latch off the output until the fault clears. ## Active production — ordering and lifecycle Production orders can be placed without LTB planning. The part is ROHS3 compliant.","metaTitle":"LD1117AV33 – STMicro 3.3 V Fixed LDO, 1 A, TO-220, Active","metaDescription":"STMicroelectronics LD1117AV33: 3.3 V fixed-output LDO, 1 A, 1.3 V dropout max, 75 dB PSRR at 120 Hz. TO-220 package, active lifecycle. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"STMicroelectronics","PSRR":"75dB (120Hz)","Series":"-","Package":"Tube","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"1A","Base Product Number":"LD1117","Protection Features":"Over Current, Over Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"0°C~125°C","Voltage - Input (Max)":"15V","Voltage Dropout (Max)":"1.3V @ 1A","Voltage - Output (Max)":"-","Supplier Device Package":"TO-220","Current - Quiescent (Iq)":"10 mA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8400","priceTiers":[{"qty":1,"price":"$0.84000","currency":"USD"},{"qty":10,"price":"$0.73700","currency":"USD"},{"qty":25,"price":"$0.69200","currency":"USD"},{"qty":100,"price":"$0.56480","currency":"USD"},{"qty":250,"price":"$0.52460","currency":"USD"},{"qty":500,"price":"$0.44648","currency":"USD"},{"qty":1000,"price":"$0.36855","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1f53874c71a4fc18a5ab2ae913a72296.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LD1117AV33/alternatives.json"},"ai":{"faq":[{"question":"Is LD1117AV33 a direct replacement for LD1117V33?","answer":"The evidence does not list a direct cross-reference between LD1117AV33 and LD1117V33. Both share the LD1117 base number and the same fixed 3.3 V output, but the suffix 'A' often indicates a different dropout or temperature grade. Verify the specific datasheet for LD1117V33 before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/LD1117AV33","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/LD1117AV33 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}}