{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH506B","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH506B","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH506B","factsUrl":"https://icboms.com/api/mcp/products/STTH506B","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH506B, Fast Recovery Diode, Standard, 600 V, 5 A, 50 ns reverse recovery, 1.85 V forward drop, Surface Mount DPAK (TO-252-3), Tube.","salesMarkdown":"## Obsolete — sourcing the STTH506B for your BOM The STTH506B is a fast recovery epitaxial diode from ST's STTH family, rated for 600 V reverse voltage and 5 A average forward current. Its 50 ns reverse recovery time (trr) places it in the ultrafast class — fast enough for continuous-conduction-mode PFC boost stages, high-frequency rectification in 100–200 kHz SMPS, and snubber clamping. The 1.85 V forward drop at 5 A is a conduction-loss trade-off typical of fast recovery diodes: you get the switching speed but pay a higher VF than a slower standard recovery part. Junction temperature is rated up to 175 °C, which gives headroom in a cramped power supply layout. ## DPAK footprint and mounting The part comes in a DPAK (TO-252-3) surface-mount package. The tab is the cathode — it is electrically live, so the PCB copper pour under the tab must be isolated or tied to the output rail, not ground. Standard DPAK footprint applies; the tube shipment means the parts are not on a reel, so pick-and-place will need a tube feeder or a manual placement step for small runs.","metaTitle":"STTH506B Fast Recovery Diode, 600V 5A, 50ns trr, DPAK","metaDescription":"STTH506B 600V 5A fast recovery diode in DPAK. 50 ns trr. Datasheet and replacement info.","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","Diode Type":"Standard","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STTH506","Capacitance @ Vr, F":"-","Supplier Device Package":"DPAK","Reverse Recovery Time (trr)":"50 ns","Current - Reverse Leakage @ Vr":"5 µA @ 600 V","Voltage - DC Reverse (Vr) (Max)":"600 V","Current - Average Rectified (Io)":"5A","Operating Temperature - Junction":"175°C(Max)","Voltage - Forward (Vf) (Max) @ If":"1.85 V @ 5 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a391ded30ed616e8410c995a708be97c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the reverse recovery time of STTH506B?","answer":"The STTH506B has a reverse recovery time (trr) of 50 ns, which qualifies it as an ultrafast recovery diode suitable for switching frequencies in the 100–200 kHz range in PFC and SMPS applications."},{"question":"What is a replacement for STTH506B?","answer":"STMicroelectronics does not list a direct pin-compatible replacement for the STTH506B. For a new design, look at current-production 600 V, 5 A ultrafast diodes in DPAK from ST (e.g., the STTH5L06 or STTH5R06 series) or from other manufacturers. Check the forward voltage and trr to match your switching losses — the replacement must be qualified in your circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH506B","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH506B 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}}