{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH1212G-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH1212G-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH1212G-TR","factsUrl":"https://icboms.com/api/mcp/products/STTH1212G-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH1212G-TR, Standard Fast Recovery Diode, 1200V Vr, 12A Io, 100ns trr, 2.2V Vf @ 12A, 10µA leakage @ 1200V, D2PAK (TO-263), Surface Mount, 175°C Tj max.","salesMarkdown":"## 1200 V, 12 A, 100 ns — the fast-recovery rectifier for high-voltage switching It comes in a D2PAK (TO-263) surface-mount package with the tab as the anode connection, designed for reflow soldering onto a copper pour for thermal management. This part targets power-factor-correction (PFC) stages, flyback converters, and motor-drive boost circuits where the combination of high blocking voltage and fast turn-off cuts switching losses in continuous-current-mode operation. ## 100 ns trr at 1200 V — what the switching speed buys you A 100 ns reverse recovery time at a 1200 V blocking voltage is the defining spec for this diode. In a hard-switched PFC stage, that recovery charge directly sets the turn-off loss in the MOSFET and the ringing amplitude on the drain node. A slower diode would force a snubber or a higher-voltage FET; the STTH1212G-TR keeps the recovery soft enough that the EMI filter sees less high-frequency content. The 2.2 V forward drop at 12 A is typical for a 1200 V fast-recovery die — expect about 26 W conduction loss at full rated current, so the D2PAK tab needs a solid thermal path to keep junction temperature under the 175 °C maximum. For BOM lines that still call out this diode, the supply path runs through independent distribution — surplus stock, last-time-buy inventory, or broker-sourced new-old-stock reels. The D2PAK footprint is common across the STTH1212 family, so a pin-compatible drop-in from the same series may exist, but no cross-reference is documented here. Each reel should be verified against the original date code and moisture-sensitivity level before reflow.","metaTitle":"STTH1212G-TR Diode, 1200V 12A Fast Recovery 100ns, D2PAK","metaDescription":"STTH1212G-TR is a 1200V 12A standard fast recovery diode with 100ns trr in D2PAK.","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":"Tape & Reel (TR); Cut Tape (CT)","Diode Type":"Standard","Mounting Type":"Surface Mount","Package / Case":"TO-263-3, D²Pak (2 Leads + Tab), TO-263AB","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STTH1212","Capacitance @ Vr, F":"-","Supplier Device Package":"D2PAK","Reverse Recovery Time (trr)":"100 ns","Current - Reverse Leakage @ Vr":"10 µA @ 1200 V","Voltage - DC Reverse (Vr) (Max)":"1200 V","Current - Average Rectified (Io)":"12A","Operating Temperature - Junction":"175°C(Max)","Voltage - Forward (Vf) (Max) @ If":"2.2 V @ 12 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f69aa717155d402af7474b4d88c68164.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STTH1212G-TR/alternatives.json"},"ai":{"faq":[{"question":"What is the reverse recovery time of STTH1212G-TR?","answer":"The reverse recovery time (trr) is 100 ns, which qualifies it as a fast-recovery diode suitable for switching frequencies in the tens of kilohertz range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH1212G-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH1212G-TR 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}}