{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"L4931CD33-TRY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"L4931CD33-TRY","canonicalUrl":"https://icboms.com/stmicroelectronics/L4931CD33-TRY","factsUrl":"https://icboms.com/api/mcp/products/L4931CD33-TRY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics L4931CD33-TRY, Automotive AEC-Q100 series, positive fixed LDO regulator, 3.3V output, 250mA, 20V max input, dropout 0.82V max @ 250mA, PSRR 73dB ~ 55dB (120Hz ~ 10kHz), -40°C to 125°C, 8-SOIC package.","salesMarkdown":"## Fixed 3.3 V rail for automotive and industrial loads The STMicroelectronics L4931CD33-TRY is a single-output positive fixed LDO regulator delivering 3.3 V at up to 250 mA. Maximum dropout is 0.82 V at 250 mA. ## Protection and quiescent draw Over-current and over-temperature protection are built in. Quiescent current is 1 mA typical, supply current max 6 mA — the part is not a micropower LDO but the draw is acceptable for always-on modules in a vehicle where the ignition load is already several hundred milliamps. No LTB or EOL notice on record. No official second-source cross-reference is listed, but the LD39020DTPU33R (200 mA, 5.5 V max input, similar PSRR profile) is a functional alternative if the load budget allows the lower current.","metaTitle":"STMicroelectronics L4931CD33-TRY LDO Regulator, 3.3V Fixed","metaDescription":"ST L4931CD33-TRY is an AEC-Q100 qualified LDO regulator, fixed 3.3V output, 250mA, dropout 0.82V max at full load, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"73dB ~ 55dB (120Hz ~ 10kHz)","Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","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)":"0.82V @ 250mA","Current - Supply (Max)":"6 mA","Supplier Device Package":"8-SOIC","Current - Quiescent (Iq)":"1 mA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.64","priceTiers":[{"qty":1,"price":"$1.64000","currency":"USD"},{"qty":10,"price":"$1.47100","currency":"USD"},{"qty":25,"price":"$1.38800","currency":"USD"},{"qty":100,"price":"$1.18260","currency":"USD"},{"qty":250,"price":"$1.11040","currency":"USD"},{"qty":500,"price":"$0.97160","currency":"USD"},{"qty":1000,"price":"$0.80504","currency":"USD"},{"qty":2500,"price":"$0.74952","currency":"USD"},{"qty":5000,"price":"$0.72176","currency":"USD"},{"qty":12500,"price":"$0.69400","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e8177abb532eada9de100491c3fb867b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/L4931CD33-TRY/alternatives.json"},"ai":{"faq":[{"question":"Is L4931CD33-TRY automotive grade?","answer":"Yes, it is qualified to AEC-Q100 and belongs to the Automotive series."},{"question":"What is the recommended replacement for L4931CD33-TRY if obsolete?","answer":"No official replacement is listed. For a functional alternative with lower output current, consider the LD39020DTPU33R (200 mA, 5.5 V max input)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/L4931CD33-TRY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/L4931CD33-TRY 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}}