{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ54CA-AQ","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ54CA-AQ","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ54CA-AQ","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ54CA-AQ","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor, Zener TVS diode, order code 1.5SMCJ54CA-AQ, bidirectional, 54V standoff, 87.1V clamping @ 17.2A peak pulse, 1500W peak pulse power, SMC/DO-214AB, automotive temp grade -50°C to 150°C junction.","salesMarkdown":"## Bidirectional clamping at 87.1 V The 1.5SMCJ54CA-AQ is a unidirectional bidirectional TVS diode — the CA suffix confirms it clamps both polarities, so a single device protects a 54 V rail from both positive transients (load dump, inductive kick) and reverse-polarity events without a second diode. Selecting the standoff at 54 V nominal gives a protection window of roughly 33 V above the rail before clamping engages. The 1500 W peak pulse rating defines the maximum energy the device can absorb during a single 10/1000 µs transient without failing. In an automotive load-dump scenario — the dominant surge threat in 12 V and 24 V systems — this rating sets whether the diode survives the event or degrades prematurely; a diode undersized for the peak power simply fails short, leaving the protected load exposed. ## Automotive temperature grade and SMC mounting Junction temperature rating extends to 150°C — the upper end of the automotive under-hood band. At 150°C junction, derating is applied per the diode's thermal model, so the actual survivable pulse count drops compared to room-temperature operation. The SMC/DO-214AB package mounts directly to the PCB surface — the clip-lead form factor is not available for this variant (Strip package only). The foot pattern matches the industry-standard SMC footprint, and thermal relief on the landing pad controls the RthJA during clamping events.","metaTitle":"Diotec 1.5SMCJ54CA-AQ TVS Diode, 87.1V Clamping","metaDescription":"Diotec 1.5SMCJ54CA-AQ bidirectional TVS diode, 1500W peak pulse, 87.1V clamping, 54V standoff, SMC/DO-214AB. Automotive graded. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Diotec Semiconductor","Type":"Zener","Series":"-","Package":"Strip","Applications":"Automotive","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Operating Temperature":"-50°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC/DO-214AB","Voltage - Breakdown (Min)":"60V","Voltage - Clamping (Max) @ Ipp":"87.1V","Voltage - Reverse Standoff (Typ)":"54V","Current - Peak Pulse (10/1000µs)":"17.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9260","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMCJ54CA-AQ/alternatives.json"},"ai":{"faq":[{"question":"What is the 1.5SMCJ54CA-AQ used for?","answer":"It is a Zener-based bidirectional transient voltage suppressor for automotive electronics — protecting ECU inputs, sensor lines, and power rails from surge events defined in IEC 61000-4-5 and ISO 7637-2."},{"question":"What package does the 1.5SMCJ54CA-AQ come in?","answer":"The package is listed as Strip in SMC/DO-214AB — a surface-mount form factor with a standard SMC foot pattern."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ54CA-AQ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ54CA-AQ 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}}