{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ22A-13","brand":"Diodes Incorporated","brandSlug":"diodes-inc","productSlug":"SMAJ22A-13","canonicalUrl":"https://icboms.com/diodes-inc/SMAJ22A-13","factsUrl":"https://icboms.com/api/mcp/products/SMAJ22A-13","rawCanonicalId":null},"summary":{"shortDescription":"Diodes Incorporated SMAJ22A-13 Zener TVS diode, 400W peak pulse power, 22V reverse standoff, 35.5V clamping, DO-214AC SMA package, unidirectional, -55°C to 150°C.","salesMarkdown":"## Protection window and pulse rating The SMAJ22A-13: The 22V reverse standoff voltage means the protected rail can run at 22V DC without the diode conducting leakage current; the 24.4V minimum breakdown voltage is the threshold where avalanche conduction begins. Rated for 400W peak pulse power, this part handles the energy from a single transient event — a 35.5V clamp at 11.2A equals 398W, confirming the rating is at the waveform's peak. The 10/1000µs pulse shape is the industry-standard TVS test condition (8/20µs for ESD events is a different waveform); this rating applies to longer-duration surges like inductive kickback or lightning-induced transients on signal lines. Power line protection is not supported — the clamping voltage and pulse current are sized for signal and data lines, not for bulk DC bus or AC mains suppression. Use this part on 22V nominal rails such as 24V industrial sensor supplies, telecom line cards, or automotive 24V systems where the transient energy stays within the 400W envelope. ## Package and board integration Housed in the DO-214AC (SMA) package, surface-mount with the supplier device package also designated SMA. The footprint is standard for this JEDEC outline — the cathode band on the body marks the unidirectional orientation. Available in Tape & Reel (TR) and Cut Tape (CT) options for both production reels and prototype quantities. The base product number is SMAJ22, which covers the full voltage family — the suffix A indicates a 5% tolerance on breakdown voltage, and -13 is Diodes' reel-packaging code. ## Sourcing an obsolete TVS diode Diodes Incorporated has marked the SMAJ22A-13 as Obsolete. The DO-214AC SMA package is a common industry footprint shared by many TVS families from Littelfuse, Vishay, STMicroelectronics, and others. A functional replacement would need to match the 22V standoff, 35.5V clamp, 400W rating, and unidirectional polarity — but pinout is identical across all SMA-package TVS diodes, so the board layout does not change. Cross-reference verification against the original BOM's transient requirements is recommended before substitution.","metaTitle":"Diodes Inc SMAJ22A-13 TVS Diode, 400W, 22V, DO-214AC","metaDescription":"Diodes Incorporated SMAJ22A-13 Zener TVS diode, 400W peak pulse power, 22V reverse standoff, 35.5V clamping. DO-214AC SMA package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Diodes Incorporated","Type":"Zener","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AC, SMA","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Power - Peak Pulse":"400W","Base Product Number":"SMAJ22","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMA","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"24.4V","Voltage - Clamping (Max) @ Ipp":"35.5V","Voltage - Reverse Standoff (Typ)":"22V","Current - Peak Pulse (10/1000µs)":"11.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a6e414533ed6f0f7c15ae6d19d66ae3c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to SMAJ22A-13?","answer":"There is no official cross-reference from Diodes Incorporated. Any replacement must match the DO-214AC SMA package, 22V reverse standoff, 35.5V clamping, 400W peak pulse power, and unidirectional polarity. Several manufacturers offer SMA-package TVS diodes with similar ratings — Littelfuse's SMAJ22A or Vishay's SMAJ22A are parametric equivalents worth evaluating against the original BOM's transient requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diodes-inc/SMAJ22A-13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diodes-inc/SMAJ22A-13 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-19T21:39:47.083Z","lastPublished":"2026-07-19T21:39:47.083Z","indexable":true}}