{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH30W03CW","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH30W03CW","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH30W03CW","factsUrl":"https://icboms.com/api/mcp/products/STTH30W03CW","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH30W03CW, Fast Recovery =< 500ns, > 200mA (Io), 300 V, 15 A per diode, 20 ns trr, 1.4 Vf, Common Cathode, TO-247-3, Through Hole, Tube.","salesMarkdown":"## 300 V, 15 A per leg, 20 ns trr — the fast-recovery diode pair The STMicroelectronics STTH30W03CW is a 300 V, 15 A per-diode fast-recovery rectifier configured as a common-cathode pair in a single TO-247-3 through-hole package. Its 20 ns reverse recovery time (trr) puts it well inside the Fast Recovery =< 500ns class, making it a candidate for high-frequency rectification, PFC boost stages, and snubber clamp circuits where switching losses dominate. The 20 ns trr is the headline number here. For a 15 A diode at 300 V, that recovery speed slashes the turn-off energy per cycle compared to a standard recovery part. In a continuous-conduction-mode PFC running 50–100 kHz, the difference in junction temperature is measurable. The 1.4 V forward drop at 15 A is a standard trade-off for a fast epitaxial diode in this voltage class — the thermal pad of the TO-247 needs to see a heatsink or forced air above about 8 A average per leg. That means STMicroelectronics has ended production — no last-time-buy window remains open through the factory channel. No direct factory successor is listed on the official record, so a pin-compatible replacement search should target a 300 V, 15 A common-cathode fast-recovery diode in TO-247-3 from ST or an equivalent from a second manufacturer. ## Layout and thermal note Through-hole TO-247-3 with the tab at the common-cathode potential. The junction is rated to 175°C maximum, so the heatsink interface and mounting torque follow standard TO-247 practice. Reverse leakage sits at 10 µA at 300 V — negligible for most power circuits, but worth derating if the ambient runs above 100°C or the part operates near its voltage ceiling continuously.","metaTitle":"STTH30W03CW diode, 300 V, 15 A, 20 ns trr, TO-247","metaDescription":"STTH30W03CW fast recovery diode, 300 V, 15 A per diode, 20 ns trr, TO-247-3. Quoted on request.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"-","Package":"Tube","Technology":"Standard","Mounting Type":"Through Hole","Package / Case":"TO-247-3","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STTH30","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-247","Reverse Recovery Time (trr)":"20 ns","Current - Reverse Leakage @ Vr":"10 µA @ 300 V","Voltage - DC Reverse (Vr) (Max)":"300 V","Operating Temperature - Junction":"175°C (Max)","Voltage - Forward (Vf) (Max) @ If":"1.4 V @ 15 A","Current - Average Rectified (Io) (per Diode)":"15A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.4800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Is STTH30W03CW obsolete?","answer":"Yes, STTH30W03CW carries an Obsolete lifecycle status. STMicroelectronics has ended production; the part is available through surplus and broker channels only."},{"question":"What is the replacement for STTH30W03CW?","answer":"No official factory successor is listed on the manufacturer record. A suitable replacement should be a 300 V, 15 A per-diode, common-cathode fast-recovery rectifier in TO-247-3, with trr at or below 20 ns for switching-loss parity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH30W03CW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH30W03CW when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}