{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ20CA-AQ","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ20CA-AQ","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ20CA-AQ","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ20CA-AQ","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor, bidirectional Zener TVS diode, 1.5SMCJ20CA-AQ, 20V reverse standoff, 1500W peak pulse, 46.3A peak pulse, DO-214AB SMC surface-mount package, -50°C to 150°C junction.","salesMarkdown":"## What a 1500W TVS Zener actually protects The 1.5SMCJ20CA-AQ is a unidirectional-bidirectional TVS Zener diode from Diotec Semiconductor — the bidirectional polarity code (CA suffix) means it clamps both polarities, which makes it the right fit for AC rails or any node where the line can swing past ground. ## The three voltage numbers that drive TVS selection Reverse standoff voltage of 20 V defines the continuous working voltage the diode sees without conducting — the protected rail can sit at 20 V indefinitely without the TVS loading it. Minimum breakdown of 22.2 V is the threshold where the device begins to conduct — below this the TVS is invisible to the circuit; above it the clamp takes over. The 2.2 V margin between standoff and breakdown gives the line room to breathe before the protection activates. Maximum clamping voltage of 32.4 V at the rated 46.3 A peak pulse is the number that protects downstream ICs — the downstream circuit must survive 32.4 V for the brief duration of the event, so downstream abs-max ratings must be specified above this ceiling. ## Automotive temperature grade and SMT form factor Junction temperature rated from -50°C to 150°C — this bracket covers engine-bay and chassis environments where ambient can dip below freezing and spike above 100 °C. The 150 °C ceiling is the critical figure for derating calculations; a TVS running near Tj-max in a sealed enclosure needs thermal headroom. DO-214AB (SMC) package with surface-mount termination — the wide copper pad under the body is the thermal path to the board; adequate landing pad copper and thermal vias under the cathode tab are required to hit the rated peak pulse capability. Solder-mask defined pads are standard for this footprint. Automotive application rating means the diode is characterised for the specific failure-mode and temperature requirements of vehicle electronics — not just a commercial part relabelled, but built for the automotive reliability profile.","metaTitle":"1.5SMCJ20CA-AQ TVS Zener Diode, 1500W, 20V","metaDescription":"Diotec 1.5SMCJ20CA-AQ bidirectional TVS Zener, 20V standoff, 1500W peak pulse, 46.3A peak pulse, DO-214AB SMC surface mount, automotive grade. Quoted 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)":"22.2V","Voltage - Clamping (Max) @ Ipp":"32.4V","Voltage - Reverse Standoff (Typ)":"20V","Current - Peak Pulse (10/1000µs)":"46.3A"}},"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/1.5SMCJ20CA-AQ/alternatives.json"},"ai":{"faq":[{"question":"Where can I source the 1.5SMCJ20CA-AQ and what is the typical lead time?","answer":"The part is listed as Active by the manufacturer, so it is in regular production and not subject to a last-time-buy window. Quantities, lead time, and unit pricing are confirmed against your BOM quantity when you submit an RFQ."},{"question":"Is the 1.5SMCJ20CA-AQ available as a bidirectional or unidirectional device?","answer":"Bidirectional. The CA suffix designates a bidirectional polarity — the device clamps both positive and negative transients, making it suitable for AC signal lines or any node where the voltage can swing below ground."},{"question":"What package does the 1.5SMCJ20CA-AQ use, and what does that mean for board layout?","answer":"DO-214AB (SMC) surface-mount package. The cathode tab on the underside carries the thermal load during a surge event — the board footprint under the cathode pad must be properly sized with copper pour and thermal vias to achieve the rated 1500 W peak pulse capability. Under-sizing the pad derates the peak pulse rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ20CA-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/1.5SMCJ20CA-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}}