{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2937ET-15","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2937ET-15","canonicalUrl":"https://icboms.com/texas-instruments/LM2937ET-15","factsUrl":"https://icboms.com/api/mcp/products/LM2937ET-15","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2937ET-15, fixed-output positive LDO regulator, 15 V at 500 mA, TO-220-3 through-hole package, -40°C to 125°C operating range.","salesMarkdown":"## Fixed 15 V rail for analog and industrial loads The LM2937ET-15 is a fixed-output positive LDO regulator delivering 15 V at up to 500 mA continuous. The dropout voltage is specified at 1 V maximum at 50 mA load — at light loads the headroom requirement is modest, but at full 500 mA the dropout will rise (the datasheet curve shows the typical value). Budget at least 1.5 V of input-to-output margin for the worst-case temperature and load combination. Built-in protection covers over-temperature, reverse polarity, and short circuit — these are the three failure modes that kill an unguarded linear regulator in a field installation. Reverse polarity protection means a miswired supply does not instantly destroy the part, which is a practical advantage in panel wiring or battery-powered equipment. ## NRND — still orderable, but plan a successor The RoHS status is listed as non-compliant. If your assembly line requires RoHS-compliant solder, you will need to handle this part separately — either hand-solder with leaded solder or find a Pb-free alternative. This is a common constraint for legacy through-hole parts that predate the RoHS directive. For a new design, look at TI's current LDO family with a fixed 15 V output in a TO-220 package — the TPS7A47 series or the LM2940 series are typical cross-shop candidates, though pin compatibility must be verified against the specific footprint and output capacitor requirements. ## TO-220-3 — through-hole mounting and thermal design The LM2937ET-15 comes in a TO-220-3 through-hole package. At 500 mA output and a typical dropout of 1.5 V, the power dissipation is about 0.75 W. For higher input voltages or enclosed boxes, bolt the tab to a chassis or add a clip-on heatsink.","metaTitle":"LM2937ET-15 LDO Regulator 15V Fixed 500mA TO-220-3 Texas","metaDescription":"LM2937ET-15 LDO, fixed 15 V output, 500 mA, TO-220-3, -40°C to 125°C. NRND — orderable for legacy BOMs. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","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)":"15V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3800","priceTiers":[{"qty":217,"price":"$1.38000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2937ET-15/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between LM2937ET-15 and LM2937MP-15?","answer":"The LM2937ET-15 is in a TO-220-3 through-hole package, while the LM2937MP-15 is in a DDPAK/TO-263 surface-mount package. The electrical specs (15 V fixed output, 500 mA, same protection features) are identical — the only difference is the package and mounting method."},{"question":"Where can I buy LM2937ET-15 and how is it quoted?","answer":"We source the LM2937ET-15 through our supply chain per RFQ. Submit your target quantity and preferred lead time for a current price and availability check. The NRND status means supply is stable for legacy orders but not expanding — confirm lead time at quote stage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2937ET-15","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-15 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}