{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"L7912CV-DG","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"L7912CV-DG","canonicalUrl":"https://icboms.com/stmicroelectronics/L7912CV-DG","factsUrl":"https://icboms.com/api/mcp/products/L7912CV-DG","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics L7912CV-DG, fixed -12V output, 1.5A, negative linear voltage regulator, TO-220-3 through-hole package, PSRR 60dB at 120Hz, active production.","salesMarkdown":"## Negative -12V rail, 1.5A, TO-220 The L7912CV-DG is a fixed -12V output negative linear regulator from STMicroelectronics, rated for 1.5A continuous output in a TO-220-3 through-hole package. It is the go-to part when you need a clean, low-noise negative supply for op-amp rails, bipolar ADC references, or analog front ends that run off split supplies. ## PSRR 60 dB at 120 Hz — ripple rejection for audio and instrumentation With a PSRR of 60 dB at 120 Hz, the L7912CV-DG attenuates full-wave-rectified ripple by a factor of 1000. For a -35V input rail carrying 1 Vpp of 120 Hz ripple, the output sees roughly 1 mVpp — clean enough for most 16-bit analog chains without a post-filter. The dropout voltage is 1.1 V typical at 1 A load. That means the input must stay below -13.1 V to maintain regulation at 1 A; at lighter loads the dropout is lower, but the -35V absolute maximum input gives headroom for unregulated transformer-rectifier rails. ## Protection and quiescent current Built-in over-temperature and short-circuit protection let the L7912CV-DG survive output shorts and thermal overload without external clamp diodes or foldback circuits. Quiescent current is 3 mA typical — negligible in a 1.5 A rail but worth noting for always-on low-power systems. ## Active production — TO-220 through-hole availability","metaTitle":"L7912CV-DG -12V 1.5A Negative Voltage Regulator TO-220","metaDescription":"ST L7912CV-DG fixed -12V output, 1.5A negative linear regulator in TO-220. PSRR 60dB at 120Hz, dropout 1.1V typ at 1A. Active production, ROHS3.","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":"$0.8900","priceTiers":[{"qty":1,"price":"$0.89000","currency":"USD"},{"qty":10,"price":"$0.78100","currency":"USD"},{"qty":25,"price":"$0.73360","currency":"USD"},{"qty":100,"price":"$0.59870","currency":"USD"},{"qty":250,"price":"$0.55612","currency":"USD"},{"qty":500,"price":"$0.47328","currency":"USD"},{"qty":1000,"price":"$0.37863","currency":"USD"},{"qty":2500,"price":"$0.34313","currency":"USD"},{"qty":5000,"price":"$0.31947","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/07e07f85c3a1344b8cbb4fd3144ef9b5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/L7912CV-DG/alternatives.json"},"ai":{"faq":[{"question":"Can L7912CV-DG replace L7912CV?","answer":"The L7912CV-DG is the ROHS3-compliant version of the L7912CV. Electrical specifications are identical; the -DG suffix indicates the lead-free / RoHS finish. Pin-for-pin compatible in the same TO-220 footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/L7912CV-DG","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/L7912CV-DG 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}}