{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2937ET-10","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2937ET-10","canonicalUrl":"https://icboms.com/texas-instruments/LM2937ET-10","factsUrl":"https://icboms.com/api/mcp/products/LM2937ET-10","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2937ET-10, 10V fixed output LDO regulator, 500mA output, 26V max input, TO-220-3 through-hole package, -40 to 125°C operating temperature.","salesMarkdown":"## Fixed 10 V rail for industrial and automotive loads The LM2937ET-10: The TO-220-3 through-hole package bolts into a heatsink or sits on a large copper island — the dropout is specified at 1 V max at 50 mA, so the input headroom needs to stay above 11 V to hold regulation. Built-in protection against over-temperature, reverse polarity, and short circuit means the regulator can survive a miswired field harness or a stalled fan load without external clamp diodes. ## 500 mA output — thermal budget in a TO-220 At 500 mA with a 12 V input dropping to 10 V output, the pass element dissipates 1 W. In still air the TO-220 junction-to-ambient thermal resistance is around 60 °C/W, so the die rises 60 °C above ambient — at 85 °C ambient the junction hits 145 °C, past the 125 °C rated maximum. That means a heatsink or forced airflow is non-negotiable at full load in a warm enclosure. The quiescent current sits at 2 mA typical, rising to 20 mA max under heavy load — not a concern for a 500 mA rail, but worth noting if the 10 V bus also powers the controller on the same regulator. If the design can accommodate a different package or output voltage, a parametric search across the LM2937 family may turn up an active alternative, but no pin-compatible drop-in is listed.","metaTitle":"LM2937ET-10 10V 500mA Fixed Output LDO Regulator, TO-220-3","metaDescription":"Texas Instruments LM2937ET-10 is a 10V fixed output LDO rated 500mA. TO-220-3 through-hole package, -40 to 125°C temp range.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"-","Series":"-","Package":"Tube","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"500mA","Base Product Number":"LM2937","Protection Features":"Over Temperature, Reverse Polarity, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C~125°C","Voltage - Input (Max)":"26V","Voltage Dropout (Max)":"1V @ 50mA","Current - Supply (Max)":"20 mA","Voltage - Output (Max)":"-","Supplier Device Package":"TO-220-3","Current - Quiescent (Iq)":"2 mA","Voltage - Output (Min/Fixed)":"10V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fde2ea9d87633116f7579b8ea9d1fc83.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2937ET-10/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum current of LM2937ET-10?","answer":"The LM2937ET-10 is rated for 500 mA continuous output current. At full load the dropout voltage is 1 V max at 50 mA, so the input must stay above 11 V to maintain regulation."},{"question":"What is the replacement for LM2937ET-10?","answer":"No official replacement or cross-reference is listed by Texas Instruments for the LM2937ET-10. If the design can accept a different package or output voltage, a parametric search across the LM2937 family may identify an active alternative. For the exact obsolete part, sourcing is through independent distribution against an RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2937ET-10","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM2937ET-10 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}}