{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BAJ2DD0WT","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"BAJ2DD0WT","canonicalUrl":"https://icboms.com/rohm/BAJ2DD0WT","factsUrl":"https://icboms.com/api/mcp/products/BAJ2DD0WT","rawCanonicalId":null},"summary":{"shortDescription":"ROHM Semiconductor BAJ2DD0WT, positive fixed LDO voltage regulator, 12V output, 2A, 0.7V dropout, 55dB PSRR, TO-220-5 Full Pack, through-hole, active.","salesMarkdown":"## Fixed 12V rail with 2A headroom The BAJ2DD0WT is a single-output positive LDO regulator from ROHM, delivering a fixed 12V output at up to 2A continuous. With a 25V maximum input, the part comfortably handles 24V industrial buses and 15V intermediate rails. The 55dB PSRR at 120Hz attenuates ripple from a full-wave rectified mains supply by a factor of about 560 — useful for post-regulation after a switching pre-regulator or a transformer-rectifier stage. ## Protection set and quiescent draw Built-in over-current, over-temperature, and over-voltage protection reduce the external supervision circuitry needed. The 120 µA quiescent current is modest for a 2A LDO — it won't dominate the standby budget in a system that spends most of its time powered. The enable control pin allows the regulator to be gated by a logic signal, shutting down the output and dropping the quiescent current further. Operating temperature spans -40°C to 125°C, covering both cold-start industrial enclosures and hot engine-bay environments. ## TO-220-5 Full Pack — thermal and mounting Housed in a TO-220-5 Full Pack (TO-220FP-5), the through-hole package has a fully moulded back — no exposed metal tab — so it can be bolted directly to a heatsink or chassis without an insulating pad. The five-pin layout provides dedicated input, output, ground, enable, and a no-connect pin; verify the pinout against the datasheet before laying out the PCB. At 2A output, the power dissipation (V_in - 12V) × 2A will require a heatsink for input voltages above about 14V. The Full Pack's junction-to-case thermal resistance is higher than a standard TO-220 with an exposed tab, so the heatsink selection must account for that.","metaTitle":"ROHM BAJ2DD0WT LDO Regulator, 12V Fixed, 2A, TO-220-5","metaDescription":"BAJ2DD0WT from ROHM: 12V fixed output LDO, 2A, 0.7V dropout at full load, 55dB PSRR. Active, ROHS3. Quoted to order against RFQ.","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-5","Current - Quiescent (Iq)":"120 µA","Voltage - Output (Min/Fixed)":"12V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.49","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/86ca613d442246e2b3c3c807366dae83.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BAJ2DD0WT/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does ROHM provide for BAJ2DD0WT?","answer":"The part is ROHS3 compliant. ROHM provides the standard RoHS certificate of compliance; other documentation (REACH, UL) should be requested through the supply chain at RFQ time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/BAJ2DD0WT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/BAJ2DD0WT 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}}