{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL432QDBZRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL432QDBZRG4","canonicalUrl":"https://icboms.com/texas-instruments/TL432QDBZRG4","factsUrl":"https://icboms.com/api/mcp/products/TL432QDBZRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL432QDBZRG4, adjustable shunt voltage reference, 2.495 V min output, ±2.2% tolerance, 100 mA output, SOT-23-3 surface-mount package, active production.","salesMarkdown":"## 2.495 V reference — the anchor for the bias rail That 2.495 V is the internal bandgap voltage; the output is set by two external resistors to any value up to 36 V. The ±2.2% tolerance on the reference means the actual Vref at 25 °C sits between 2.441 V and 2.549 V — tight enough for a precision bias supply or an ADC reference in an industrial control loop, but not as tight as the 0.5% or 1% grades in the same family. The shunt topology sinks current from the cathode to the anode to regulate the output voltage. With a 100 mA output current capability and a 1 mA minimum cathode current, it can drive an optocoupler LED in a feedback loop or bias a small signal chain without an extra regulator IC. The SOT-23-3 package (TO-236-3 / SC-59) keeps the footprint small — about 2.9 mm × 1.3 mm — so it fits on dense mixed-signal boards where every square millimetre counts. TI lists the TL432QDBZRG4 as Active on its product lifecycle status. ## SOT-23-3 — footprint and reflow The SOT-23-3 (TO-236-3 / SC-59) is a three-lead surface-mount package. The pinout is standard for this family: cathode (pin 1), anode (pin 2), reference (pin 3). The small body means the thermal pad area is minimal — for a shunt regulator dissipating (Vin – Vout) × Iload, the junction-to-ambient thermal resistance is around 250 °C/W in still air. If the load current is near the 100 mA limit with a large voltage drop, the power dissipation can push the junction above 125 °C; a copper pour under the package helps. Reflow profile follows standard lead-free solder profiles — no special bake or moisture sensitivity level beyond the standard MSL1.","metaTitle":"TL432QDBZRG4 Shunt Voltage Reference, 2.495 V, ±2.2%","metaDescription":"Texas Instruments TL432QDBZRG4 adjustable shunt reference, 2.495 V min, 100 mA output, ±2.2% tolerance, 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":"Bulk","Tolerance":"±2.2%","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Active","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"100 mA","Current - Supply":"-","Current - Cathode":"1 mA","Base Product Number":"TL432","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"-","Voltage - Output (Max)":"36 V","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"-","Voltage - Output (Min/Fixed)":"2.495V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/99b53f28cf28b982a16c2a9ac87cd6e9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL432QDBZRG4/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between TL432QDBZRG4 and TL431?","answer":"The TL432 and TL431 are functionally identical — both are adjustable shunt regulators with a 2.495 V reference. The difference is the pinout: the TL431 uses a TO-92 or SOIC-8 pinout (reference, anode, cathode in a different order), while the TL432 uses the SOT-23-3 pinout (cathode, anode, reference). The TL432QDBZRG4 is the SOT-23-3 variant with a ±2.2% tolerance grade. If your board layout expects the TL431 pinout, the TL432 will not drop in without a footprint change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL432QDBZRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL432QDBZRG4 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}}