{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2937ET-15/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2937ET-15-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM2937ET-15-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM2937ET-15%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2937ET-15/NOPB, fixed 15 V output LDO, 500 mA, TO-220-3, through-hole, industrial temperature range -40°C to 125°C.","salesMarkdown":"## What the 500 mA output rating means for your rail The LM2937ET-15/NOPB delivers a fixed 15 V output at up to 500 mA continuous. That 500 mA ceiling sets the load budget for the downstream circuitry — if your BOM calls for 15 V at 400 mA steady-state, this part has headroom; if the load peaks at 480 mA with transients, the margin is tight and a heatsink becomes mandatory. Dropout is specified at 1 V maximum at 50 mA load. For a 15 V output, the input must stay above 16 V (15 V + 1 V) to maintain regulation; below that the output follows the input minus the dropout voltage. In a 24 V industrial bus system, that headroom is generous — but in a 12 V battery-backed rail, 16 V minimum input means this regulator cannot start until the bus is already boosted. The 2 mA Iq is modest for a 500 mA LDO — it will not dominate standby losses in always-on applications, but the 20 mA max supply current under heavy load or fault conditions should be factored into the input rail fuse sizing. Built-in protection covers over-temperature, reverse polarity, and short circuit. Reverse polarity protection is a practical advantage in field-wired 24 V systems where the supply can be accidentally reversed — the regulator survives the fault without an external series diode. The TO-220-3 package (through-hole) provides a low thermal resistance path to a heatsink — the tab is the output pin, so the heatsink is at 15 V potential and must be isolated from chassis ground. ## Sourcing posture and lifecycle Availability is confirmed per RFQ; we source against your BOM quantity from franchised and independent channels.","metaTitle":"LM2937ET-15/NOPB – Texas Instruments 15V 500mA Linear","metaDescription":"Texas Instruments LM2937ET-15/NOPB fixed 15V output LDO, 500mA, TO-220-3, active production. Industrial temp range -40°C to 125°C. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","PSRR":"-","Series":"-","Package":"Tube","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Active","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":"$2.1600","priceTiers":[{"qty":1,"price":"$2.16000","currency":"USD"},{"qty":10,"price":"$1.94400","currency":"USD"},{"qty":25,"price":"$1.83360","currency":"USD"},{"qty":100,"price":"$1.56240","currency":"USD"},{"qty":250,"price":"$1.46704","currency":"USD"},{"qty":500,"price":"$1.28366","currency":"USD"},{"qty":1000,"price":"$1.06360","currency":"USD"},{"qty":2500,"price":"$1.03800","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/fa0d88b5b31623656f74345e6f33b73f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2937ET-15%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"Does LM2937ET-15/NOPB require a heatsink?","answer":"At 500 mA output with a 24 V input, the regulator dissipates (24 V – 15 V) × 0.5 A = 4.5 W. The TO-220 package junction-to-ambient thermal resistance is typically 50–65 °C/W without a heatsink — that would exceed the 125 °C junction limit. A heatsink is required for loads above approximately 200 mA at high input-to-output differentials."},{"question":"Is LM2937ET-15/NOPB obsolete?","answer":"No. The product status is Active. Texas Instruments continues to manufacture this part with no announced end-of-life."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2937ET-15-NOPB","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-NOPB 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}}