{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLV4946-2K","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"TLV4946-2K","canonicalUrl":"https://icboms.com/infineon/TLV4946-2K","factsUrl":"https://icboms.com/api/mcp/products/TLV4946-2K","rawCanonicalId":null},"summary":{"shortDescription":"Infineon TLV4946-2K Hall-effect latch, open-drain output, 2.7 V supply, 3.5 mT operate / -3.5 mT release, -40°C to 85°C, surface-mount Bulk package.","salesMarkdown":"## Hall latch for speed and direction sensing The TLV4946-2K is a Hall-effect latch from Infineon — it switches its open-drain output when a south-pole field crosses 3.5 mT and releases at -3.5 mT (north pole). The latch behaviour means the output stays high until the opposite polarity is applied, which suits brushless-DC motor commutation, rotary encoder index detection, and flow-meter pulse counting. Supply voltage is 2.7 V minimum, so it runs from a 3.3 V or 2.8 V rail without a regulator. The open-drain output sinks up to 20 mA, enough to drive a logic input or a small LED directly. ## Temperature range and field threshold Rated -40°C to 85°C, the TLV4946-2K covers industrial and automotive-cabin environments. The temperature-compensated design keeps the operate and release points stable across the range. Operate point is 3.5 mT (south pole), release is -3.5 mT (north pole). This hysteresis prevents chatter from electrical noise or mechanical vibration in the target magnet. ## Sourcing and lifecycle status Infineon lists the TLV4946-2K as Active. The silicon is in a standard surface-mount SOT-23 footprint — confirm the specific package code on the reel label when ordering.","metaTitle":"TLV4946-2K Hall Switch Latch – Infineon – 2.7 V, Open Drain","metaDescription":"Infineon TLV4946-2K Hall-effect latch, 2.7 V supply, open-drain output, 3.5 mT operate, -40°C to 85°C. Active production. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Sensors & Transducers"],"specifications":{"feature_list":"Temperature Compensated","package_type":"Bulk","polarization":"South Pole","mounting_type":"Surface Mount","output_signal":"Open Drain","Test Condition":"-40°C to 85°C","product_status":"Active","lifecycle_stage":"eol_hot","timing_function":"Latch","supply_voltage_v":"2.7","switching_current_a":"0.006","output_current_max_a":"0.02","sensing_distance_max_mm":"3.5mT Trip, -3.5mT Release","Operating Temperature High":"-40°C to 85°C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.20","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/632e023ee6a074300d3a09dc6750fdb9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the TLV4946-2K a latch or a switch?","answer":"It is a latch. The output toggles when a south-pole field exceeds 3.5 mT and stays latched until a north-pole field exceeds -3.5 mT. This is different from a Hall switch, which resets when the field drops below the operate point."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/TLV4946-2K","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/TLV4946-2K when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:11:16.509Z","lastPublished":"2026-07-17T20:11:16.509Z","indexable":true}}