{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"L7805C-D2TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"L7805C-D2TR","canonicalUrl":"https://icboms.com/stmicroelectronics/L7805C-D2TR","factsUrl":"https://icboms.com/api/mcp/products/L7805C-D2TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics L7805C-D2TR, 5V fixed positive linear regulator, 1.5A output, 62dB PSRR at 120Hz, over-temperature and short-circuit protection, D2PAK surface-mount, 0°C to 125°C.","salesMarkdown":"## 5V fixed rail with 1.5A headroom The STMicroelectronics L7805C-D2TR is a fixed 5V positive linear regulator delivering up to 1.5A continuous output. It belongs to the L78xx family of three-terminal regulators that have been a staple for local on-card regulation in industrial and consumer designs for decades. The 35V maximum input voltage gives enough headroom for rectified and filtered DC rails from a 24VAC transformer or a 24V industrial supply. Built-in over-temperature and short-circuit protection means the regulator handles fault conditions without external crowbar or foldback circuitry. ## 62dB PSRR — why it matters for analog loads The 62dB power-supply rejection ratio at 120Hz is the spec that separates this regulator from a generic 7805. At 120Hz — the full-wave rectifier ripple frequency for 60Hz mains — 62dB means the output ripple is attenuated by a factor of roughly 1250. For a 1Vpp input ripple, the output sees under 1mVpp. That matters when the 5V rail feeds an ADC reference, a precision op-amp, or a VCO where supply noise couples into the signal path. The 8mA quiescent current is typical for a bipolar 1.5A regulator; it adds about 0.4W dissipation at 5V output, which factors into the heatsink calculation. ## D2PAK surface-mount — thermal reality The D2PAK package has a large exposed copper tab for thermal management. The L7805C-D2TR is listed as obsolete. STMicroelectronics has stopped production.","metaTitle":"ST L7805C-D2TR 5V Fixed Linear Regulator, 1.5A, D2PAK","metaDescription":"STMicroelectronics L7805C-D2TR 5V fixed positive linear regulator, 1.5A output, 62dB PSRR at 120Hz, D2PAK.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"STMicroelectronics","PSRR":"62dB (120Hz)","Series":"-","Package":"Tape & Reel (TR)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-263-3, D²Pak (2 Leads + Tab), TO-263AB","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"1.5A","Base Product Number":"L7805","Protection Features":"Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"0°C ~ 125°C","Voltage - Input (Max)":"35V","Voltage Dropout (Max)":"2V @ 1A (Typ)","Voltage - Output (Max)":"-","Supplier Device Package":"D2PAK","Current - Quiescent (Iq)":"8 mA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1ec3c1a4c11b806c0cf815b616dfcd1d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/L7805C-D2TR/alternatives.json"},"ai":{"faq":[{"question":"Is L7805C-D2TR obsolete?","answer":"Yes, the L7805C-D2TR is listed as obsolete. STMicroelectronics has discontinued production."},{"question":"What is the replacement for L7805C-D2TR?","answer":"For new designs, a current-production fixed 5V 1.5A positive linear regulator in D2PAK from ST or an alternate vendor should be evaluated and qualified. The base product number L7805 covers multiple package and temperature variants; check the L78xx family for active D2PAK options."},{"question":"What is the output current of L7805C-D2TR?","answer":"The L7805C-D2TR is rated for 1.5A continuous output current. This is the maximum DC load the regulator can deliver with adequate heatsinking."},{"question":"Can L7805C-D2TR be used with a heatsink?","answer":"Yes. The D2PAK package has a large exposed metal tab that is the primary thermal path."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/L7805C-D2TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/L7805C-D2TR 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}}