{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH16R04CT","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH16R04CT","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH16R04CT","factsUrl":"https://icboms.com/api/mcp/products/STTH16R04CT","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH16R04CT, fast recovery epitaxial diode array, 400 V Vrrm, 8 A average per diode, 50 ns trr, common-cathode pair in TO-220-3, through-hole, -40 to 175 °C junction.","salesMarkdown":"## 50 ns trr — where this diode earns its keep Its 50 ns reverse recovery time places it in the fast-epitaxial class, not the ultrafast or SiC tier — fast enough for continuous-conduction-mode PFC and 100 kHz switching supplies, but not a 20 ns part for 500 kHz LLC converters. ## 8 A per leg, 1.5 Vf — heatsink math Each diode in the common-cathode pair delivers 8 A average with a forward drop of 1.5 V maximum at that current. At 8 A total (4 A per diode), the conduction loss is roughly 6 W; at 16 A total, it hits 12 W. The TO-220 package with its metal tab needs a heatsink above about 5 W total dissipation — the tab is common-cathode, so the heatsink is electrically live unless an insulating pad is used. ## 175 °C junction — industrial and motor-drive margin The 175 °C ceiling gives 25 °C of headroom over the more common 150 °C parts, which matters when the heatsink is undersized or airflow is intermittent.","metaTitle":"STTH16R04CT 400V 8A Fast Recovery Diode Array, TO-220","metaDescription":"STTH16R04CT dual common-cathode fast recovery diode, 400V, 8A per diode, 50 ns trr, TO-220-3. Active production.","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-220-3","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STTH16","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-220","Reverse Recovery Time (trr)":"50 ns","Current - Reverse Leakage @ Vr":"10 µA @ 400 V","Voltage - DC Reverse (Vr) (Max)":"400 V","Operating Temperature - Junction":"-40°C ~ 175°C","Voltage - Forward (Vf) (Max) @ If":"1.5 V @ 8 A","Current - Average Rectified (Io) (per Diode)":"8A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5700","priceTiers":[{"qty":1,"price":"$1.67000","currency":"USD"},{"qty":10,"price":"$1.49900","currency":"USD"},{"qty":100,"price":"$1.20450","currency":"USD"},{"qty":500,"price":"$0.98962","currency":"USD"},{"qty":1000,"price":"$0.92488","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/47e462c64726a733f35f3f4b51874148.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STTH16R04CT/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between STTH16R04CT and STTH16R04CG?","answer":"The two parts share the same die and ratings (400 V, 8 A per diode, 50 ns trr). The difference is the package: STTH16R04CT is a through-hole TO-220-3, while STTH16R04CG is a surface-mount D2PAK (TO-263). Choose the CT for through-hole assembly or when a bolted heatsink is needed; choose the CG for reflow soldering on a PCB with a copper-pad heatsink."},{"question":"Can STTH16R04CT be used in parallel?","answer":"Yes, but with care. Each diode already carries 8 A; paralleling two devices (four diodes total) requires matched forward voltage and equal thermal paths to avoid current hogging. A small series resistor or inductor in each leg helps balance the dynamic current during switching transients."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH16R04CT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH16R04CT 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}}