{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH30R04W","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH30R04W","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH30R04W","factsUrl":"https://icboms.com/api/mcp/products/STTH30R04W","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH30R04W, 400 V 30 A fast recovery rectifier, 100 ns trr, 1.45 Vf at 30 A, DO-247 through-hole package, -40 to 175 °C junction.","salesMarkdown":"## 400 V, 30 A fast recovery — the switching rectifier for PFC and output stages The STTH30R04W is a 400 V, 30 A fast recovery epitaxial diode from STMicroelectronics, built for hard-switched power conversion where reverse recovery losses matter. Its 100 ns trr at 30 A forward current puts it in the fast-recovery class — fast enough for continuous-current-mode PFC boost stages and secondary-side output rectification in 400 V bus supplies, without the cost and gate-drive complexity of a SiC Schottky. ## DO-247 through-hole — package and mounting realities The STTH30R04W comes in a DO-247-2 package with straight leads, a through-hole package that handles the 30 A current and the associated thermal load better than a surface-mount D²PAK at this power level. The two-lead form — anode and cathode on the body, with the metal tab as the cathode contact — is the standard for bolted mounting to a heatsink. The through-hole leads take solder or a press-fit socket; the tab is typically greased and screwed down with an M3 or #6 hardware, with an insulating washer if the heatsink is at chassis potential. For a rework technician: the DO-247 is one of the friendlier packages to extract. The leads are thick enough to survive a desoldering iron or a hot-air preheat from the board side without lifting the pad. Orientation is unambiguous: the tab is the cathode, same as the TO-247 but with a narrower body. The reverse leakage is 15 µA at 400 V reverse voltage, a typical figure for a fast-recovery epitaxial diode at this voltage class. Leakage doubles roughly every 10 °C above 25 °C junction, so at 125 °C Tj expect leakage in the low-milliamp range — budget for it in the bias supply or snubber design.","metaTitle":"ST STTH30R04W 400V 30A Fast Recovery Diode, 100 ns trr","metaDescription":"STMicroelectronics STTH30R04W: 400V 30A fast recovery rectifier, 100 ns trr, 1.45 Vf, DO-247 through-hole, -40 to 175°C junction. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","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)":"100 ns","Current - Reverse Leakage @ Vr":"15 µA @ 400 V","Voltage - DC Reverse (Vr) (Max)":"400 V","Current - Average Rectified (Io)":"30A","Operating Temperature - Junction":"-40°C ~ 175°C","Voltage - Forward (Vf) (Max) @ If":"1.45 V @ 30 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.0400","priceTiers":[{"qty":1,"price":"$3.04000","currency":"USD"},{"qty":10,"price":"$2.55100","currency":"USD"},{"qty":100,"price":"$2.06400","currency":"USD"},{"qty":500,"price":"$1.83464","currency":"USD"},{"qty":1000,"price":"$1.57091","currency":"USD"},{"qty":2000,"price":"$1.47918","currency":"USD"},{"qty":5000,"price":"$1.41912","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1e173fd2567065fd4e14f60892a9f99a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STTH30R04W/alternatives.json"},"ai":{"faq":[{"question":"What is the reverse recovery time of STTH30R04W?","answer":"The reverse recovery time (trr) is 100 ns at rated conditions. This is the time from zero-crossing to full reverse blocking; it determines the switching loss in hard-switched topologies and sets the minimum dead-time in bridge circuits."},{"question":"Is STTH30R04W RoHS compliant?","answer":"Yes, the STTH30R04W is ROHS3 compliant, meaning it meets the EU RoHS directive with no exemptions for lead, mercury, cadmium, or the other restricted substances."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH30R04W","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH30R04W 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}}