{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL432BCPK","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL432BCPK","canonicalUrl":"https://icboms.com/texas-instruments/TL432BCPK","factsUrl":"https://icboms.com/api/mcp/products/TL432BCPK","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL432BCPK adjustable shunt voltage reference, ±0.5% tolerance, 2.495 V to 36 V output, 100 mA output, 600 µA cathode current, SOT-89-3 package, 0°C to 70°C.","salesMarkdown":"## Active production, ±0.5% tolerance — the BOM-fit tier It delivers a ±0.5% tolerance on the 2.495 V internal reference, making it the precision tier within the family — the B-grade selection for designs that need tighter regulation than the standard ±1% or ±2% grades. Output is adjustable from 2.495 V up to 36 V via two external resistors, covering common 3.3 V, 5 V, 12 V, and 24 V rail generation or overvoltage clamp setpoints. The 100 mA output current and low 600 µA minimum cathode current suit it for power-supply feedback loops, precision bias supplies, and monitoring circuits. ## SOT-89-3 package — rework and thermal notes Housed in a SOT-89-3 (TO-243AA) surface-mount package, the TL432BCPK has a large collector tab that doubles as the cathode connection and primary thermal path. The tab is electrically live — the PCB copper area under it sets the junction-to-ambient thermal resistance. For hand rework, the tab soaks heat; preheat the board to 100–120 °C before hot-air removal to lift the part clean, not the pad. The three-pin layout (cathode, anode, reference) is the same as the TO-92 and SOT-23 versions of the TL431/TL432 family, so a board laid out for a SOT-23 TL432 can often accept the SOT-89-3 with a pad pattern adjustment for the wider tab. For those applications, look to the TL432B-Q1 series or industrial-temperature TL432 variants. ## Sourcing and lifecycle — no LTB risk","metaTitle":"TL432BCPK Shunt Voltage Reference, ±0.5% Tolerance, SOT-89-3","metaDescription":"TL432BCPK adjustable shunt reference, 2.495 V to 36 V output, ±0.5% tolerance, 100 mA output, SOT-89-3.","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); Cut Tape (CT)","Tolerance":"±0.5%","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"TO-243AA","Product Status":"Active","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"100 mA","Current - Supply":"-","Current - Cathode":"600 µA","Base Product Number":"TL432","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"-","Operating Temperature":"0°C~70°C(TA)","Voltage - Output (Max)":"36 V","Supplier Device Package":"SOT-89-3","Temperature Coefficient":"-","Voltage - Output (Min/Fixed)":"2.495V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1643","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2e8567ad04842692d5fb8309c69e90b6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL432BCPK/alternatives.json"},"ai":{"faq":[{"question":"Is TL432BCPK equivalent to TL431?","answer":"The TL432 is functionally equivalent to the TL431 — both are adjustable shunt references with the same 2.495 V internal reference and output voltage range. The difference is pinout: the TL431 uses a TO-92 or SOIC-8 pin arrangement (reference, anode, cathode), while the TL432 rearranges the pins for a different PCB layout. The TL432BCPK carries a tighter ±0.5% tolerance versus the standard TL431's ±1% or ±2% grades."},{"question":"What is the tolerance of TL432BCPK?","answer":"The TL432BCPK is specified with a ±0.5% tolerance on the 2.495 V internal reference voltage. This is the B-grade precision tier within the TL432 family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL432BCPK","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL432BCPK 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}}