{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"L4931CZ33-AP","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"L4931CZ33-AP","canonicalUrl":"https://icboms.com/stmicroelectronics/L4931CZ33-AP","factsUrl":"https://icboms.com/api/mcp/products/L4931CZ33-AP","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics L4931CZ33-AP, fixed 3.3V positive LDO regulator, 250mA output, 0.8V dropout max, -40°C to 125°C, TO-92-3 through-hole package.","salesMarkdown":"The STMicroelectronics L4931CZ33-AP is a single-output, fixed 3.3 V positive low-dropout linear regulator rated for 250 mA continuous output. It comes in a through-hole TO-92-3 package with formed leads. ## Quiescent current and supply budget","metaTitle":"STMicroelectronics L4931CZ33-AP 3.3V LDO Regulator, 250mA","metaDescription":"ST L4931CZ33-AP fixed 3.3V output LDO, 250mA, 0.8V dropout max, -40°C to 125°C, TO-92-3. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"PSRR":"73dB ~ 55dB (120Hz ~ 10kHz)","Package":"Tape & Box (TB); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-226-3, TO-92-3 (TO-226AA) Formed Leads","lifecycle_stage":"eol_hot","Current - Output":"250mA","Protection Features":"Over Current, Over Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"20V","Voltage Dropout (Max)":"0.8V @ 250mA","Current - Supply (Max)":"6 mA","Supplier Device Package":"TO-92-3","Current - Quiescent (Iq)":"1 mA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.98","priceTiers":[{"qty":1,"price":"$0.98000","currency":"USD"},{"qty":10,"price":"$0.86100","currency":"USD"},{"qty":25,"price":"$0.80920","currency":"USD"},{"qty":100,"price":"$0.66030","currency":"USD"},{"qty":250,"price":"$0.61328","currency":"USD"},{"qty":500,"price":"$0.52194","currency":"USD"},{"qty":1000,"price":"$0.43085","currency":"USD"},{"qty":2000,"price":"$0.43085","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e8177abb532eada9de100491c3fb867b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/L4931CZ33-AP/alternatives.json"},"ai":{"faq":[{"question":"Is L4931CZ33-AP obsolete or active?","answer":"It is active — current lifecycle stage, no discontinuation notice. ROHS3 compliant. No LTB risk for new designs."},{"question":"L4931CZ33-AP vs L4931CZ33 — what is the difference?","answer":"The -AP suffix indicates Tape & Box (TB) or Cut Tape (CT) packaging for automated handling, versus the standard bulk tube of the base L4931CZ33. The silicon and electrical specs are identical."},{"question":"Is L4931CZ33-AP pin compatible with LM78L33?","answer":"Both are 3-terminal TO-92 regulators with the same pinout (input, ground, output), so they are physically interchangeable on the same footprint. However, the LM78L33 has a higher typical dropout (around 1.7 V) and lower PSRR — verify the input headroom and ripple rejection requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/L4931CZ33-AP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/L4931CZ33-AP 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}}