{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ58CA-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMAJ58CA-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMAJ58CA-TR","factsUrl":"https://icboms.com/api/mcp/products/SMAJ58CA-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMAJ, TRANSIL™ series Zener TVS diode, SMAJ58CA-TR, 400W peak pulse power, 58V reverse standoff, 121V clamping, bidirectional, DO-214AC SMA package, surface mount.","salesMarkdown":"When a transient exceeds the breakdown voltage (minimum 64.4V), it clamps the surge to a maximum of 121V at the rated peak pulse current of 19A (8/20µs). This part is a single bidirectional channel, so it handles both positive and negative transients — useful on AC lines, bipolar supplies, or data lines where polarity is not fixed. The SMAJ58CA-TR comes in a DO-214AC (SMA) package, surface-mount only. It is a two-terminal device with a cathode band for orientation — the band marks the cathode end, but since it is bidirectional, polarity does not matter for circuit function; the band is just a manufacturing reference. The SMA footprint is standard and rework-friendly: a moderate-temperature hot-air station at 300°C for 5–10 seconds will lift it cleanly without pad damage, provided the board is preheated to 100°C to reduce thermal shock. No exposed thermal pad, so no via stitch needed. MSL is typically Level 1 (unlimited floor life) for this package, but verify the reel label if the part has been in storage beyond two years. ## Where it fits — applications and environment This is a general-purpose TVS diode, suitable for protecting power supplies, I/O lines, and communication interfaces in industrial, telecom, and consumer equipment. It is not rated for power-line protection (no internal power-line protection feature), so keep it on secondary-side DC rails or low-frequency signal lines, not mains AC inputs. ## Lifecycle and sourcing — active and available There is no official successor because none is needed — this part remains a standard catalog item. No LTB risk, no single-source concern for the foreseeable future.","metaTitle":"STMicroelectronics SMAJ58CA-TR Zener TVS Diode, 400W","metaDescription":"STMicroelectronics SMAJ58CA-TR Zener TVS diode, 400W peak pulse power, 58V reverse standoff, 121V clamping voltage, bidirectional, DO-214AC SMA package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"SMAJ, TRANSIL™","Package":"Tape & Reel (TR) Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AC, SMA","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"400W","Base Product Number":"SMAJ58","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMA (DO-214AC)","Voltage - Breakdown (Min)":"64.4V","Voltage - Clamping (Max) @ Ipp":"121V","Voltage - Reverse Standoff (Typ)":"58V","Current - Peak Pulse (10/1000µs)":"19A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cb45a0c551131e855efff64db719fd1e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMAJ58CA-TR/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy SMAJ58CA-TR and what is the price?","answer":"The SMAJ58CA-TR is available to order through independent distribution. Submit an RFQ for current availability and a firm quote."},{"question":"Is SMAJ58CA-TR bidirectional?","answer":"Yes, the SMAJ58CA-TR is a single bidirectional channel. It clamps transients of both polarities, making it suitable for AC lines or bipolar DC rails where the surge polarity is unknown."},{"question":"What is the equivalent of SMAJ58CA-TR?","answer":"The SMAJ58CA-TR is a standard bidirectional TVS in the SMAJ family. Pin-compatible equivalents include other 58V bidirectional SMA-package TVS diodes from manufacturers like Littelfuse, Vishay, or ON Semiconductor — check the reverse standoff voltage (58V), clamping voltage (121V), and peak pulse power (400W) match exactly before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMAJ58CA-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMAJ58CA-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}}