{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH30S12W","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH30S12W","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH30S12W","factsUrl":"https://icboms.com/api/mcp/products/STTH30S12W","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH30S12W fast recovery epitaxial diode, 1200V Vrrm, 30A average rectified current, 50ns reverse recovery time, DO-247-2 through-hole package, 175°C max junction temperature.","salesMarkdown":"## 1200 V, 30 A fast recovery diode for high-voltage switching The STMicroelectronics STTH30S12W is a fast recovery epitaxial diode rated for 1200 V reverse voltage and 30 A average forward current, packaged in a through-hole DO-247-2 with straight leads. Its 50 ns reverse recovery time places it in the fast-recovery class for hard-switching topologies where stored charge recovery losses matter. The 50 ns reverse recovery time is the headline switching parameter. In a continuous-current-mode boost PFC or a hard-switched inverter leg, this trr determines the reverse-recovery charge that the companion IGBT or MOSFET must commutate. A 50 ns trr at 30 A keeps the recovery losses manageable at switching frequencies up to the tens of kilohertz range typical of industrial power stages. The 2.9 V forward drop at 30 A is the conduction-loss counterpart — at full load expect roughly 87 W forward dissipation, which drives the heatsink sizing. The 15 µA leakage at 1200 V rated voltage confirms the blocking junction quality; leakage doubles roughly every 10°C above 25°C junction, so at 125°C junction count on about 240 µA, still negligible for most designs. ## DO-247 through-hole — mounting and thermal interface The DO-247-2 package with straight leads is a standard through-hole power package. The metal tab is the anode connection and provides the primary thermal path — plan for a heatsink with a TO-247/DO-247 compatible clip or screw mount. The straight lead form suits vertical PCB mounting; if your board uses a right-angle or surface-mount power layout, check whether a formed-lead variant or a different package in the STTH30 family fits better. The package is rated for the full 175°C junction temperature, so the thermal interface material and heatsink must keep the case temperature within the derating curve. The base product number STTH30 covers a family of 30 A diodes at various voltage ratings and package options; if your board layout or voltage requirement shifts, the same base number lets you move within the family without requalifying the footprint.","metaTitle":"STTH30S12W Fast Recovery Diode, 1200V 30A DO-247","metaDescription":"STTH30S12W fast recovery diode from STMicroelectronics: 1200V 30A, 50ns trr, DO-247-2 through-hole package. Active production, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"-","Package":"Tube","Technology":"Standard","Mounting Type":"Through Hole","Package / Case":"DO-247-2 (Straight Leads)","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STTH30","Capacitance @ Vr, F":"-","Supplier Device Package":"DO-247","Reverse Recovery Time (trr)":"50 ns","Current - Reverse Leakage @ Vr":"15 µA @ 1200 V","Voltage - DC Reverse (Vr) (Max)":"1200 V","Current - Average Rectified (Io)":"30A","Operating Temperature - Junction":"175°C (Max)","Voltage - Forward (Vf) (Max) @ If":"2.9 V @ 30 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.8400","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e29b30e4ec46010720a66cbc53dbc555.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the reverse recovery time (trr) of STTH30S12W?","answer":"The reverse recovery time is 50 ns, which classifies this as a fast recovery diode suitable for hard-switching topologies like PFC and motor drives."},{"question":"What package does STTH30S12W come in?","answer":"It is supplied in a DO-247-2 through-hole package with straight leads. The supplier device package is DO-247."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH30S12W","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH30S12W 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}}