{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"L7912ACV","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"L7912ACV","canonicalUrl":"https://icboms.com/stmicroelectronics/L7912ACV","factsUrl":"https://icboms.com/api/mcp/products/L7912ACV","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics L7912ACV, negative fixed linear regulator, -12V output, 1.5A output current, 60dB PSRR at 120Hz, TO-220-3 through-hole package, 0°C to 125°C operating temperature.","salesMarkdown":"The STMicroelectronics L7912ACV is a negative fixed linear regulator delivering a regulated -12V output at up to 1.5A. It is the go-to part when you need a clean, low-noise negative rail from a more negative input (up to -35V maximum) for op-amp supplies, analog front-ends, or bipolar power architectures. The fixed output means no external resistor divider — just the input cap and output cap per the datasheet recommendation, and it regulates. Its 60dB power-supply rejection ratio at 120Hz is the figure that matters if this rail feeds an audio preamp, a precision ADC reference buffer, or any circuit where line-frequency ripple couples into the signal path. 60dB at the fundamental line frequency is a solid, workmanlike number for a three-terminal regulator — it knocks a 1Vpp ripple down to 1mVpp at the output, which keeps most analog stages happy without a post-filter. The 1.5A rating is the maximum output current before thermal protection engages. With the TO-220 package heatsunk, 1A continuous is sustainable. ## Through-hole TO-220 — thermal and assembly reality For the L7912ACV, the tab is at -12V potential, so the heatsink must be electrically isolated or the system ground must be floated — a common gotcha when replacing a positive regulator. The package is rated for the full 1.5A output only when the tab is properly heatsunk; in free air at 25°C, derate to about 0.5A before the thermal shutdown cycles. The mounting type is through-hole, so the board needs drilled holes and wave-solder or hand-solder assembly. No reflow profile to worry about, but the tab must be soldered or bolted to a heatsink for any load above a few hundred milliamps.","metaTitle":"STMicroelectronics L7912ACV Linear Regulator, -12V Fixed","metaDescription":"L7912ACV from STMicroelectronics: fixed -12V output, 1.5A, 60dB PSRR at 120Hz, TO-220-3 through-hole. Active lifecycle, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","PSRR":"60dB (120Hz)","Series":"-","Package":"Tube","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"1.5A","Base Product Number":"L7912","Protection Features":"Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Negative","Operating Temperature":"0°C ~ 125°C","Voltage - Input (Max)":"-35V","Voltage Dropout (Max)":"1.1V @ 1A (Typ)","Voltage - Output (Max)":"-","Supplier Device Package":"TO-220","Current - Quiescent (Iq)":"3 mA","Voltage - Output (Min/Fixed)":"-12V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9200","priceTiers":[{"qty":1,"price":"$0.97000","currency":"USD"},{"qty":10,"price":"$0.85200","currency":"USD"},{"qty":25,"price":"$0.80000","currency":"USD"},{"qty":100,"price":"$0.65300","currency":"USD"},{"qty":250,"price":"$0.60656","currency":"USD"},{"qty":500,"price":"$0.51622","currency":"USD"},{"qty":1000,"price":"$0.42612","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1cec72d055257a6e2d03b4342d6041cf.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/L7912ACV/alternatives.json"},"ai":{"faq":[{"question":"L7912ACV vs L7912CV: what's the difference?","answer":"The difference is the temperature grade. The L7912ACV is rated for the commercial temperature range of 0°C to 125°C, while the L7912CV (without the 'A') is typically rated for the industrial range of -40°C to 125°C. For indoor or controlled-temperature environments, the ACV suffix is sufficient; for outdoor, automotive, or extended-temperature applications, the CV suffix is the correct choice. Both are fixed -12V, 1.5A regulators in the same TO-220 package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/L7912ACV","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/L7912ACV 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}}