{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM117H","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM117H","canonicalUrl":"https://icboms.com/texas-instruments/LM117H","factsUrl":"https://icboms.com/api/mcp/products/LM117H","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM117H adjustable positive linear regulator, 1.5A output, 40V input max, 1.25V to 37V output, PSRR 80dB~65dB (120Hz), -55°C to 150°C, TO-3 metal can, through-hole.","salesMarkdown":"## What the PSRR figure means for your post-switcher rail The LM117H delivers 80 dB of ripple rejection at 120 Hz, dropping to 65 dB at the same frequency — this is the line-frequency rejection floor. A switching pre-regulator running at 100 kHz will have its ripple attenuated by roughly 30 dB less at that frequency, so the LM117H works best when the input ripple is below a few hundred kHz. Rated for 1.5 A continuous output with a 40 V maximum input and an adjustable output from 1.25 V to 37 V — the dropout voltage at full load is typically 2 V, so the input rail must stay at least 2 V above the set output voltage across the load range. Housed in a TO-3 (TO-205AD) metal can, through-hole only — the tab is the output and must be bolted to a heatsink for any load above a few hundred mA. No SMT equivalent exists in this package family. Built-in over-current, over-temperature, and short-circuit protection mean it can survive a momentary output short without external foldback circuitry. ## Sourcing and lifecycle — active, no LTB on the horizon ROHS3 compliant per the manufacturer's declaration — no restricted substances in the bill of materials.","metaTitle":"Texas Instruments LM117H Adjustable Linear Regulator","metaDescription":"Texas Instruments LM117H adjustable positive linear regulator, 1.5A output, 40V input max, PSRR 80dB~65dB (120Hz), -55°C to 150°C, TO-3 metal can.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"80dB ~ 65dB (120Hz)","Package":"Tube","Output Type":"Adjustable","Mounting Type":"Through Hole","Package / Case":"TO-205AD, TO-39-3 Metal Can","lifecycle_stage":"eol_hot","Current - Output":"1.5A","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-55°C ~ 150°C (TJ)","Voltage - Input (Max)":"40V","Voltage - Output (Max)":"37V","Supplier Device Package":"TO-3","Current - Quiescent (Iq)":"5 mA","Voltage - Output (Min/Fixed)":"1.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$20.94","priceTiers":[{"qty":1,"price":"$20.94000","currency":"USD"},{"qty":10,"price":"$19.31100","currency":"USD"},{"qty":25,"price":"$18.44360","currency":"USD"},{"qty":100,"price":"$16.49060","currency":"USD"},{"qty":250,"price":"$15.73120","currency":"USD"},{"qty":500,"price":"$15.35250","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e56db9281768e7250cecd9c037344ff0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM117H/alternatives.json"},"ai":{"faq":[{"question":"What is the PSRR of LM117H at 120 Hz?","answer":"80 dB typical, dropping to 65 dB at 120 Hz — this is the line-frequency rejection floor. At higher switching frequencies the rejection rolls off, so the part is best suited for cleaning up ripple below a few hundred kHz."},{"question":"What package does LM117H come in?","answer":"TO-3 (TO-205AD) metal can, through-hole mounting. The supplier device package is TO-3. No SMT option exists in this variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM117H","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM117H 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}}