{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH50W03CW","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH50W03CW","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH50W03CW","factsUrl":"https://icboms.com/api/mcp/products/STTH50W03CW","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH50W03CW, Fast Recovery Diode, Standard, 1 Pair Common Cathode, 300V, 25A per diode, 1.5V @ 25A, 27ns trr, Through Hole, TO-247-3, ECOPACK®2.","salesMarkdown":"## What the 27 ns reverse recovery time means for your PFC stage The STTH50W03CW is a 300 V, 25 A per diode fast-recovery rectifier in a common-cathode TO-247-3 package, built for continuous-conduction-mode PFC and output rectification in high-frequency SMPS. Its 27 ns reverse recovery time (trr) is the key spec that determines switching losses and EMI — a 27 ns trr keeps the recovery snap soft enough that you can run the boost stage at 100 kHz without a snubber on the diode, provided the layout keeps the loop inductance under 20 nH. Each of the two diodes handles 25 A average with a 1.5 V forward drop at that current, so the total package dissipation at full load is roughly 75 W — plan for a heatsink with a thermal resistance below 1.5 °C/W to keep the junction under the 175 °C max. ## Package and mounting — TO-247-3 through-hole The TO-247-3 package is a standard through-hole power package with a large copper tab for heatsink mounting. The common-cathode configuration means the two diode cathodes are tied to the tab, so the tab is at the output voltage — insulate the heatsink or use a thermal pad. The through-hole leads handle the 25 A per diode without issue, but the PCB trace width from the anode pins to the transformer should be at least 5 mm for the return path. The ECOPACK®2 series designation means the part is RoHS-compliant and free of halogens and antimony trioxide, which simplifies compliance for EU and China RoHS.","metaTitle":"STTH50W03CW Fast Recovery Diode, 300V 25A TO-247, 27ns trr","metaDescription":"STMicroelectronics STTH50W03CW fast recovery diode, 300V 25A per diode, 27ns trr, TO-247-3 common cathode.","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":"ECOPACK®2","Package":"Tube","Diode Type":"Standard","Mounting Type":"Through Hole","Package / Case":"TO-247-3","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STTH50","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-247","Reverse Recovery Time (trr)":"27 ns","Current - Reverse Leakage @ Vr":"15 µA @ 300 V","Voltage - DC Reverse (Vr) (Max)":"300 V","Operating Temperature - Junction":"175°C(Max)","Voltage - Forward (Vf) (Max) @ If":"1.5 V @ 25 A","Current - Average Rectified (Io) (per Diode)":"25A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.2500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/dd5ebe06b958895e4ed1b8d09e41ac8c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the reverse recovery time of STTH50W03CW?","answer":"The reverse recovery time (trr) is 27 ns, which qualifies it as a fast-recovery diode suitable for high-frequency switching applications like PFC boost stages."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH50W03CW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH50W03CW 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}}