{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH30R04D","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH30R04D","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH30R04D","factsUrl":"https://icboms.com/api/mcp/products/STTH30R04D","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH30R04D, Fast Recovery Diode, 400 V, 30 A, 100 ns trr, TO-220AC, Through Hole, -40°C to 175°C.","salesMarkdown":"## 400 V, 30 A fast recovery diode for PFC and boost stages The STMicroelectronics STTH30R04D is a 400 V, 30 A general-purpose fast-recovery rectifier in a TO-220AC through-hole package. The 100 ns trr at 400 V reverse voltage and 30 A forward current is the parameter that determines how much the diode rings during turn-off. In a hard-switched PFC stage running at 100 kHz, that recovery time keeps the reverse-recovery charge low enough that the MOSFET body diode or SiC Schottky alternative isn't forced into conduction. The 1.45 V forward drop at 30 A sets the conduction loss at 43.5 W — the TO-220AC package with a properly sized heatsink handles that thermal load, but the junction must stay below 175°C. ## Junction temperature range and environment The 15 µA reverse leakage at 400 V and 25°C rises with temperature; at 150°C junction the leakage can dominate the off-state losses, so the thermal design should account for the leakage current at the operating temperature. The TO-220AC package is a common through-hole footprint, so second-sourcing to a pin-compatible fast-recovery diode from another manufacturer is straightforward if dual-supply resilience is needed.","metaTitle":"STTH30R04D Diode, 400 V 30 A Fast Recovery, TO-220AC","metaDescription":"STTH30R04D general purpose fast recovery diode, 400 V, 30 A, 100 ns trr, TO-220AC. Active production, ROHS3 compliant.","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":"TO-220-2","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STTH30","Capacitance @ Vr, F":"-","Supplier Device Package":"TO-220AC","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":"$2.9800","priceTiers":[{"qty":1,"price":"$2.98000","currency":"USD"},{"qty":10,"price":"$2.49900","currency":"USD"},{"qty":100,"price":"$2.02200","currency":"USD"},{"qty":500,"price":"$1.79732","currency":"USD"},{"qty":1000,"price":"$1.53895","currency":"USD"},{"qty":2000,"price":"$1.44909","currency":"USD"},{"qty":5000,"price":"$1.39025","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1e173fd2567065fd4e14f60892a9f99a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STTH30R04D/alternatives.json"},"ai":{"faq":[{"question":"What is the STTH30R04D equivalent or alternative?","answer":"Any pin-compatible 400 V, 30 A fast-recovery diode in TO-220AC from another manufacturer would need to be qualified against the 100 ns trr and 1.45 V Vf at 30 A."},{"question":"Is STTH30R04D RoHS compliant?","answer":"Yes, the STTH30R04D is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH30R04D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH30R04D 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}}