{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM317LZ-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"LM317LZ-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/LM317LZ-TR","factsUrl":"https://icboms.com/api/mcp/products/LM317LZ-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics LM317LZ-TR, adjustable positive linear voltage regulator, 100 mA output, 1.2 V to 37 V range, TO-92-3 through-hole package, Tape & Reel.","salesMarkdown":"## What the 100 mA ceiling means for your rail The LM317LZ-TR is a 100 mA adjustable positive linear regulator in a TO-92-3 (TO-226AA) through-hole package from STMicroelectronics. The 100 mA output current is the practical limit before the junction temperature climbs above the 125 °C maximum in free air — this part is sized for bias rails, reference supplies, or local post-regulation, not for powering a load that draws continuous current above 50–60 mA without a heatsink or airflow. ## PSRR and input headroom — cleaning a noisy rail PSRR is specified at 80 dB to 65 dB at 120 Hz, which is the ripple frequency from a full-wave rectified line — a common input source in industrial and appliance supplies. The 80 dB floor at 120 Hz means this regulator attenuates 120 Hz ripple by a factor of 10,000, so a 1 Vpp ripple on the input becomes roughly 0.1 mVpp at the output. That matters when the load is an analog front-end or a precision reference that cannot tolerate line-frequency hum. The Tape & Reel variant is the same die and package as the bulk LM317LZ, just in a reel for automated insertion.","metaTitle":"LM317LZ-TR STMicroelectronics Adjustable Positive Voltage","metaDescription":"LM317LZ-TR from STMicroelectronics — adjustable positive linear regulator, 100 mA output, 1.2 V to 37 V range, 80 dB PSRR at 120 Hz.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","PSRR":"80dB ~ 65dB (120Hz)","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Output Type":"Adjustable","Mounting Type":"Through Hole","Package / Case":"TO-226-3, TO-92-3 (TO-226AA)","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"100mA","Base Product Number":"LM317","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"0°C ~ 125°C","Voltage - Input (Max)":"40V","Voltage Dropout (Max)":"-","Voltage - Output (Max)":"37V","Supplier Device Package":"TO-92-3","Current - Quiescent (Iq)":"5 mA","Voltage - Output (Min/Fixed)":"1.2V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6000","priceTiers":[{"qty":1,"price":"$0.63000","currency":"USD"},{"qty":10,"price":"$0.55900","currency":"USD"},{"qty":25,"price":"$0.52480","currency":"USD"},{"qty":100,"price":"$0.42830","currency":"USD"},{"qty":250,"price":"$0.39780","currency":"USD"},{"qty":500,"price":"$0.33856","currency":"USD"},{"qty":1000,"price":"$0.27948","currency":"USD"},{"qty":2000,"price":"$0.27948","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/75ec130e850034dd89547ca506646904.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM317LZ-TR/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between LM317LZ and LM317LZ-TR?","answer":"The LM317LZ-TR is the Tape & Reel (TR) packaging variant of the same LM317LZ die and TO-92-3 package. The electrical specifications — 100 mA output, 1.2 V to 37 V range, 80 dB PSRR — are identical. The TR suffix indicates the part is supplied on a reel for automated pick-and-place or through-hole insertion equipment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/LM317LZ-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/LM317LZ-TR 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}}