{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2937ET-5.0","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2937ET-5.0","canonicalUrl":"https://icboms.com/texas-instruments/LM2937ET-5.0","factsUrl":"https://icboms.com/api/mcp/products/LM2937ET-5.0","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2937ET-5.0, positive fixed LDO regulator, 5V output, 500mA, TO-220-3 through-hole package, -40°C to 125°C operating temperature, 26V input max.","salesMarkdown":"## Why the 500 mA rating matters — and where this part lives The LM2937ET-5.0 is a positive fixed-output LDO regulator from Texas Instruments that delivers 5 V at up to 500 mA. That 500 mA current rating is the number that decides whether this part powers your load without dropping out — if your circuit draws 480 mA peak, you have margin; if it hits 600 mA, you will see the output sag. The TO-220-3 through-hole package makes it a field-swappable part — no hot-air station needed, just a screwdriver and a heatsink. The input can go up to 26 V, so it handles unregulated supplies like a rectified 24 VAC transformer without needing a pre-regulator. Dropout voltage is a maximum of 1 V at 50 mA load, which means you need at least 6 V on the input to keep the 5 V rail clean. The part includes over-temperature, reverse polarity, and short-circuit protection — that saves you from adding external clamp diodes or a crowbar circuit on the output. That does not mean it is discontinued today, but it signals that TI will eventually phase it out. If you are building a new BOM, look for a pin-compatible alternative in the same family — the LM2937 series shares the same TO-220-3 footprint and fixed 5 V output.","metaTitle":"LM2937ET-5.0 LDO Regulator, 5V Fixed, 500mA, TO-220-3, NRND","metaDescription":"Texas Instruments LM2937ET-5.0 positive fixed LDO, 5V output, 500mA, TO-220-3 through-hole. Industrial temp -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","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":"Not For New Designs","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)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.9200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fde2ea9d87633116f7579b8ea9d1fc83.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2937ET-5.0/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM2937ET-5.0?","answer":"The LM2937 series includes pin-compatible fixed-output variants in the same TO-220-3 package. Check the LM2937ET-5.0/NOPB (lead-free) or the LM2937IMP-5.0 (surface-mount) as drop-in alternatives for the same 5 V, 500 mA output."},{"question":"Can LM2937ET-5.0 be used in new designs?","answer":"TI does not recommend it for new designs because of the NRND status. For a new BOM, select a current-production LDO with the same 5 V fixed output and TO-220-3 footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2937ET-5.0","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-5.0 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}}