{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LD1117V50-DG","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"LD1117V50-DG","canonicalUrl":"https://icboms.com/stmicroelectronics/LD1117V50-DG","factsUrl":"https://icboms.com/api/mcp/products/LD1117V50-DG","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics LD1117V50-DG, fixed 5V output LDO positive regulator, 800mA, TO-220-3 through-hole package, 75dB PSRR at 120Hz, 0°C~125°C operating temperature.","salesMarkdown":"## Fixed 5V rail for legacy boards The STMicroelectronics LD1117V50-DG is a fixed 5V output LDO positive voltage regulator in a TO-220-3 through-hole package. It delivers up to 800 mA with a maximum dropout voltage of 1.2 V at full load — the sort of part you find holding up a 5 V analog rail or powering a microcontroller on older industrial or consumer boards. The 5 V fixed output is the first thing to confirm when you're swapping this into a board that lost its regulator — no resistor divider to set the voltage, just drop it in and it's 5 V out. The 800 mA current rating covers moderate loads like a small MCU plus a few op-amps; if the board draws more than that, you'll see the output sag or the thermal protection kick in at 125°C. The LD1117V50-DG is listed as obsolete. No official successor is listed on the record, but the LD1117 family includes other fixed-output variants (e.g., LD1117V33 for 3.3 V) that share the same pinout and TO-220-3 footprint.","metaTitle":"STMicroelectronics LD1117V50-DG Fixed 5V LDO, 800mA","metaDescription":"STMicroelectronics LD1117V50-DG is a fixed 5V output LDO regulator rated 800mA in a TO-220-3 through-hole package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"STMicroelectronics","PSRR":"75dB (120Hz)","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":"800mA","Base Product Number":"LD1117","Protection Features":"Over Current, Over Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"0°C~125°C","Voltage - Input (Max)":"15V","Voltage Dropout (Max)":"1.2V @ 800mA","Voltage - Output (Max)":"-","Supplier Device Package":"TO-220","Current - Quiescent (Iq)":"10 mA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/494bb92f4effb270dec91ee8a399de6d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LD1117V50-DG/alternatives.json"},"ai":{"faq":[{"question":"Is LD1117V50-DG obsolete?","answer":"Yes, the LD1117V50-DG is listed as obsolete. It is no longer manufactured by STMicroelectronics."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/LD1117V50-DG","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/LD1117V50-DG 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}}