{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM350T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM350T","canonicalUrl":"https://icboms.com/texas-instruments/LM350T","factsUrl":"https://icboms.com/api/mcp/products/LM350T","rawCanonicalId":null},"summary":{"shortDescription":"LM350T, 3A adjustable positive voltage regulator, 1.25V to 33V output, 35V max input, PSRR 86dB~65dB at 120Hz, TO-220-3, through hole, 0°C~125°C.","salesMarkdown":"## 3A adjustable regulator — the LM317 upgrade for higher current The LM350T is a 3A adjustable positive voltage regulator in a TO-220-3 through-hole package. It delivers the same 1.25V reference and adjustable output architecture as the LM317, but doubles the output current ceiling to 3A — the key spec that decides the design-in for any linear supply that needs more than 1.5A without moving to a separate pass transistor. Output adjusts from 1.25V up to 33V from a 35V maximum input rail. The 86dB to 65dB PSRR at 120Hz (mains frequency) tells you this part was designed for post-rectifier ripple rejection in linear power supplies — the 86dB floor at light load, dropping to 65dB under full 3A draw, is the ripple-rejection envelope a designer budgets for. ## Built-in protection saves external supervision Over-current, over-temperature, and short-circuit protection are integrated — no external crowbar or thermal watchdog needed. For a 3A part in a TO-220, the thermal limit is the practical boundary: at 3A with a 10V drop, you're dissipating 30W, which demands a heatsink sized for the junction-to-ambient thermal path. The protection circuits prevent die damage during transient faults or start-up into a shorted output. ## Obsolete — sourcing through the independent channel For a production BOM that still calls out this regulator, the window for last-time-buy lots has closed; current availability depends on broker inventory that has already been through the channel. ## TO-220 mounting and thermal design The TO-220-3 package requires a heatsink for any load above about 1A at moderate dropout. The tab is the output pin (Vout), so the heatsink interface is at output potential — insulating pad and washer are needed if the heatsink is chassis-grounded. The through-hole leads suit point-to-point wiring or PCB mounting with 0.100-inch pitch hole spacing.","metaTitle":"LM350T 3A Adjustable Linear Regulator, TO-220, Obsolete","metaDescription":"LM350T 3A adjustable positive voltage regulator, 1.25V to 33V output, PSRR 86dB~65dB at 120Hz, TO-220-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","PSRR":"86dB ~ 65dB (120Hz)","Series":"-","Package":"Tube","Output Type":"Adjustable","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Not For New Designs","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"3A","Base Product Number":"LM350","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"0°C~125°C","Voltage - Input (Max)":"35V","Voltage Dropout (Max)":"-","Voltage - Output (Max)":"33V","Supplier Device Package":"TO-220-3","Voltage - Output (Min/Fixed)":"1.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.8300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/826c2ec873d00a45c2e50bb5b7b85357.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM350T/alternatives.json"},"ai":{"faq":[{"question":"Can LM350T be used as a replacement for LM317?","answer":"Yes — the LM350T is pin-compatible with the LM317 in the TO-220 package and uses the same 1.25V reference and adjustable architecture. The key difference is the LM350T's 3A output rating versus the LM317's 1.5A. It is a drop-in upgrade for higher-current designs, provided the heatsink is sized for the additional dissipation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM350T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM350T 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}}