{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BA33DD0WT","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"BA33DD0WT","canonicalUrl":"https://icboms.com/rohm/BA33DD0WT","factsUrl":"https://icboms.com/api/mcp/products/BA33DD0WT","rawCanonicalId":null},"summary":{"shortDescription":"ROHM BA33DD0WT, linear voltage regulator, fixed 3.3V output, 2A, TO-220-5 Full Pack, through hole, -40°C to 125°C, 120 µA quiescent current, 55dB PSRR at 120 Hz.","salesMarkdown":"## 3.3V fixed-output LDO rated for 2A — the TO-220FP power regulator for industrial rails The ROHM BA33DD0WT is a single-output positive fixed LDO that delivers 3.3V at up to 2A from a maximum input of 25V. It comes in a through-hole TO-220-5 Full Pack package (supplier device package TO-220FP) with an isolated tab that simplifies heatsinking without an insulating pad. ## 0.7V dropout at 2A — headroom budgeting for the 3.3V rail The maximum dropout voltage of 0.7V at 2A means the input must stay above 4.0V to maintain regulation. That is a tight spec for a 5V rail under brownout or for a 3.6V battery near end-of-discharge — plan the input filter capacitor and bulk storage accordingly. The quiescent current of 120 µA is low for a 2A LDO, so the part does not waste much standby power on always-on rails. The 55 dB power-supply rejection ratio at 120 Hz attenuates the ripple from a full-wave rectified mains supply by a factor of about 560. That is adequate for most industrial logic and analog front-ends that do not need the 70+ dB of a post-regulator. If the load draws fast transients, the 2A output stage and the enable control feature let you sequence the rail on demand. The part is ROHS3 compliant. ## Built-in protection suite Over-current, over-temperature, and over-voltage protection are integrated, so the regulator can survive a shorted output or a thermal runaway condition without external clamp diodes. The enable pin gives a logic-level on/off control for power sequencing.","metaTitle":"ROHM BA33DD0WT LDO Regulator, 3.3V Fixed Output, 2A","metaDescription":"ROHM BA33DD0WT is a 3.3V fixed-output LDO rated for 2A with 0.7V max dropout at full load. 120 µA quiescent current, 55dB PSRR at 120 Hz.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"55dB (120Hz)","Package":"Tube","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-220-5 Full Pack","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"2A","Protection Features":"Over Current, Over Temperature, Over Voltage","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"25V","Voltage Dropout (Max)":"0.7V @ 2A","Supplier Device Package":"TO-220FP","Current - Quiescent (Iq)":"120 µA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.32","priceTiers":[{"qty":1,"price":"$3.49000","currency":"USD"},{"qty":10,"price":"$3.13100","currency":"USD"},{"qty":25,"price":"$2.95960","currency":"USD"},{"qty":100,"price":"$2.56510","currency":"USD"},{"qty":250,"price":"$2.43360","currency":"USD"},{"qty":500,"price":"$2.18366","currency":"USD"},{"qty":1000,"price":"$1.86150","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8374680a04efe5c49c61c746e64530c9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BA33DD0WT/alternatives.json"},"ai":{"faq":[{"question":"What is BA33DD0WT's listed PSRR?","answer":"The PSRR is 55 dB at 120 Hz, which is the typical ripple-rejection figure for a 2A LDO at line frequency."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/BA33DD0WT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/BA33DD0WT 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}}