{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ188CA-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMAJ188CA-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMAJ188CA-TR","factsUrl":"https://icboms.com/api/mcp/products/SMAJ188CA-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMAJ, TRANSIL™, Type Zener, SMAJ188CA-TR, 400W Peak Pulse Power, 188V Reverse Standoff, 209V Min Breakdown, 388V Clamp, Bidirectional, DO-214AC (SMA), Surface Mount, -55°C~150°C.","salesMarkdown":"## Bidirectional TVS for 188V rail protection It is a Zener-type device rated for 400W peak pulse power (10/1000µs waveform), with a minimum breakdown voltage of 209V and a maximum clamping voltage of 388V at the peak pulse current of 6A (8/20µs). ## Voltage window—where it protects Above that, the 209V minimum breakdown voltage defines where the TVS starts to avalanche. The 388V clamping voltage is the maximum voltage seen by the protected circuit during a 6A (8/20µs) surge. For a 188V rail, this window leaves roughly 21V between the rail and the start of clamping—tight enough to protect most downstream semiconductors rated for 200V or higher. The supplier device package is SMA (DO-214AC). No exposed pad—standard two-pin diode layout.","metaTitle":"STMicroelectronics SMAJ188CA-TR TRANSIL™ Bidirectional TVS","metaDescription":"STMicroelectronics SMAJ188CA-TR TRANSIL™ bidirectional TVS diode, 400W peak pulse power, 188V standoff, 209V min breakdown, 388V clamp.","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":"SMAJ188","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)":"209V","Voltage - Clamping (Max) @ Ipp":"388V","Voltage - Reverse Standoff (Typ)":"188V","Current - Peak Pulse (10/1000µs)":"6A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cb45a0c551131e855efff64db719fd1e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMAJ188CA-TR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to SMAJ188CA-TR in this component family?","answer":"Within the SMAJ series, other bidirectional TVS diodes with different standoff voltages (e.g., SMAJ170CA-TR, SMAJ200CA-TR) are pin-compatible in the same DO-214AC footprint. No direct equivalent with identical voltage ratings is listed as a second source."},{"question":"Is SMAJ188CA-TR RoHS compliant?","answer":"The SMAJ series from STMicroelectronics is typically RoHS compliant, but the specific RoHS status for SMAJ188CA-TR should be confirmed at order time from the current datasheet or certificate of compliance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMAJ188CA-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMAJ188CA-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}}