{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"REF3133AIDBZTG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"REF3133AIDBZTG4","canonicalUrl":"https://icboms.com/texas-instruments/REF3133AIDBZTG4","factsUrl":"https://icboms.com/api/mcp/products/REF3133AIDBZTG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments REF3133AIDBZTG4, series voltage reference, fixed 3.3V output, ±0.2% tolerance, 20ppm/°C drift, 43µVp-p noise (0.1-10Hz), 135µA supply, SOT-23-3, -40°C to 125°C.","salesMarkdown":"## Fixed 3.3V output with ±0.2% initial accuracy This is the accuracy you get at 25 °C without any external trimming — the reference sets the absolute voltage floor for your ADC, DAC, or sensor excitation circuit. The series topology means the output is regulated from the input rail, drawing a quiescent supply current of 135 µA typical. For a 3.3 V output, that drift translates to roughly 66 µV per degree Celsius — a figure that determines whether your 12-bit or 16-bit measurement system holds its last few bits across the thermal envelope of a motor drive or outdoor telecom enclosure. Noise performance is specified as 43 µVp-p over the 0.1 Hz to 10 Hz band and 63 µVrms over 10 Hz to 10 kHz. The low-frequency flicker noise floor is the limiting factor for precision weigh-scale or strain-gauge front ends; the wider-band noise matters for ADC reference inputs where the converter samples at rates above the 1/f corner. ## SOT-23-3 footprint and supply range Housed in a 3-pin SOT-23-3 package (also described as TO-236-3 / SC-59), the device occupies minimal PCB area and suits standard surface-mount reflow assembly. The input voltage range is 3.35 V to 5.5 V, providing 50 mV of headroom above the 3.3 V output at the minimum — enough margin for a clean LDO or a 3.6 V lithium cell. The output is rated for 10 mA continuous current. That is sufficient to bias a single ADC reference input or a small sensor bridge; for multiple loads or higher drive, a buffer stage is needed. The base part number is REF3133, and this specific suffix (AIDBZTG4) denotes the SOT-23-3 package with the extended temperature range.","metaTitle":"REF3133AIDBZTG4 3.3V Series Voltage Reference, ±0.2%","metaDescription":"Texas Instruments REF3133AIDBZTG4 series voltage reference, fixed 3.3V output, ±0.2% tolerance, 20ppm/°C drift, SOT-23-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR)","Tolerance":"±0.2%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Reference Type":"Series","Voltage - Input":"3.35V ~ 5.5V","lifecycle_stage":"eol_hot","Current - Output":"10 mA","Current - Supply":"135µA","Base Product Number":"REF3133","Noise - 0.1Hz to 10Hz":"43µVp-p","Noise - 10Hz to 10kHz":"63µVrms","Operating Temperature":"-40°C~125°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"20ppm/°C","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.4700","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/REF3133AIDBZTG4/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance and temperature drift of REF3133AIDBZTG4?","answer":"Initial tolerance is ±0.2% at 25 °C."},{"question":"Does REF3133AIDBZTG4 come in a SOT-23 package?","answer":"Yes, the supplier device package is SOT-23-3, also listed as TO-236-3 / SC-59. It is a 3-pin surface-mount package with a small footprint for compact layouts."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/REF3133AIDBZTG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/REF3133AIDBZTG4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}