{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DRV5021A1QDBZR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"DRV5021A1QDBZR","canonicalUrl":"https://icboms.com/texas-instruments/DRV5021A1QDBZR","factsUrl":"https://icboms.com/api/mcp/products/DRV5021A1QDBZR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments DRV5021A1QDBZR unipolar Hall-effect switch, south-pole activation, 4.4 mT operate / 0.4 mT release, open-drain output, 2.5 V supply, SOT-23-3 package, -40°C to 125°C.","salesMarkdown":"The DRV5021A1QDBZR: That means it remains a valid line item for new designs and production builds, not a part you need to qualify a replacement for. ## Magnetic thresholds and what they decide The DRV5021A1QDBZR switches on at 4.4 mT (south pole) and releases at 0.4 mT. That 4.0 mT hysteresis prevents chatter near the threshold — useful when the magnet moves slowly or the assembly vibrates. For a typical N35 neodymium disc, 4.4 mT is roughly 3–5 mm air gap; the actual distance depends on magnet size and orientation. Because it is a unipolar switch, only a south-pole field triggers the output. A north pole of any strength is ignored. That simplifies the magnet polarity in assembly — no risk of a flipped magnet causing a false trigger. ## Temperature range and compensation The temperature-compensated design keeps the switch point stable across that span — a basic uncompensated Hall sensor can drift 20–30% over temperature, which would change the detection distance. ## Supply and output — driving a microcontroller input The open-drain output sinks up to 30 mA — enough to drive a small LED or a logic input directly. Supply current is 2.8 mA typical, low enough for battery-powered sensing. ## Package and hand-soldering SOT-23-3 surface-mount package — three pins, 0.95 mm pitch. Hand-solderable with a fine-tipped iron and some flux; the pads are large enough for a hobbyist to work with. Available in cut tape for small quantities, not just full reels.","metaTitle":"TI DRV5021A1QDBZR Unipolar Hall Switch, SOT-23, 2.5V","metaDescription":"Texas Instruments DRV5021A1QDBZR unipolar south-pole Hall switch. 4.4 mT operate, 0.4 mT release, -40°C to 125°C. Active production, SOT-23 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Sensors & Transducers"],"specifications":{"has_mpn":"DRV5021","feature_list":"Temperature Compensated","package_type":"Tape & Reel (TR); Cut Tape (CT)","polarization":"South Pole","mounting_type":"Surface Mount","output_signal":"Open Drain","Test Condition":"-40°C to 125°C","product_status":"Active","lifecycle_stage":"eol_hot","timing_function":"Unipolar Switch","supply_voltage_v":"2.5","switching_current_a":"0.0028","output_current_max_a":"0.03","sensing_distance_max_mm":"4.4mT Trip, 0.4mT Release","Operating Temperature High":"-40°C to 125°C(TA)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.31","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f984da94e6d3cb211ec6d2178d8b82db.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/DRV5021A1QDBZR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to DRV5021A1QDBZR?","answer":"The DRV5021 family includes other sensitivity grades in the same SOT-23 package, but their operate/release points differ — verify the magnetic threshold your application needs before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/DRV5021A1QDBZR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/DRV5021A1QDBZR 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}}