{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMBJ20A-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMBJ20A-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMBJ20A-TR","factsUrl":"https://icboms.com/api/mcp/products/SMBJ20A-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMBJ20A-TR, TRANSIL™ series, unidirectional TVS diode, 600W peak pulse power, 20V reverse standoff, 22.2V breakdown, 32.4V clamping, DO-214AA (SMB) surface mount, -55°C to 150°C.","salesMarkdown":"The STMicroelectronics SMBJ20A-TR is a unidirectional transient voltage suppression (TVS) diode from the SMBJ / TRANSIL™ series, designed to clamp voltage spikes on general-purpose power and signal lines. It is rated for 600 W peak pulse power per the 10/1000 µs waveform, with a reverse standoff voltage of 20 V and a minimum breakdown voltage of 22.2 V. The 22.2 V minimum breakdown voltage is the threshold where the device starts conducting in avalanche. The 32.4 V clamping voltage is the maximum voltage the protected node sees during a pulse; if the downstream silicon (e.g., a 30 V-rated DC-DC converter input) has margin above that figure, the TVS provides adequate protection. The 19.4 A peak pulse current rating is the current the diode can sink during the 10/1000 µs test pulse — useful for estimating energy handling in a real surge event. ## Package and mounting — DO-214AA (SMB) Housed in the DO-214AA (SMB) surface-mount package, the SMBJ20A-TR is a two-terminal device with the cathode marked by a band. The package footprint is standard for the SMB family, compatible with reflow soldering profiles typical for lead-free assemblies. No power line protection feature is included — this is a basic TVS for unidirectional clamping on DC rails or signal lines.","metaTitle":"STMicroelectronics SMBJ20A-TR TVS Diode, 600W, DO-214AA","metaDescription":"SMBJ20A-TR is a 600W unidirectional TVS diode from STMicroelectronics, 20V standoff, 22.2V breakdown, 32.4V clamping. Active lifecycle, surface mount DO-214AA.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"SMBJ, TRANSIL™","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AA, SMB","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"SMBJ20","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMB (DO-214AA)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"22.2V","Voltage - Clamping (Max) @ Ipp":"32.4V","Voltage - Reverse Standoff (Typ)":"20V","Current - Peak Pulse (10/1000µs)":"19.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/28916e022258112f057e7568b7920d5a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMBJ20A-TR/alternatives.json"},"ai":{"faq":[{"question":"Can I use SMBJ20A-TR as a replacement for SMBJ20A?","answer":"The SMBJ20A-TR is functionally identical to the SMBJ20A — the -TR suffix only indicates tape-and-reel packaging. Any difference in ordering code is purely a packaging option, not a change in electrical characteristics."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMBJ20A-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMBJ20A-TR 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}}