{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ18A-AU_R1_000A1","brand":"Panjit International Inc.","brandSlug":"panjit-international-inc","productSlug":"1.5SMCJ18A-AU_R1_000A1","canonicalUrl":"https://icboms.com/panjit-international-inc/1.5SMCJ18A-AU_R1_000A1","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ18A-AU_R1_000A1","rawCanonicalId":null},"summary":{"shortDescription":"Panjit 1.5SMCJ18A-AU_R1_000A1, AEC-Q101 automotive Zener TVS diode, 1500W peak pulse, 18V reverse standoff, 29.2V clamping @ 51.4A, -55°C to 150°C TJ, DO-214AB SMC surface mount.","salesMarkdown":"## Peak pulse and clamping ratings The 1.5SMCJ18A-AU_R1_000A1: This means the device absorbs a 1.5 kJ transient energy event within a 10 ms envelope without clamping, then recovers before the next pulse window at 1000 µs. The rated peak pulse current is 51.4 A at the clamping voltage of 29.2 V, so a 24 V rail seeing a surge clamps within 29.2 V — the protected downstream IC sees this ceiling, not the raw surge. Reverse standoff voltage is 18 V typical — the maximum working voltage at which the TVS presents high impedance in the forward or reverse-bias quiescent state. A 12 V automotive rail runs well below this standoff with margin; a 24 V nominal rail may require the next step-up in standoff rating depending on transient specification. Minimum breakdown voltage is 20 V, providing the triggering threshold below which the TVS does not conduct. The gap between the 18 V standoff and the 20 V minimum breakdown is intentional design headroom — the device idles off until a transient pushes it into avalanche breakdown at 20 V and above. ## AEC-Q101 automotive qualification and thermal margin This is the entry-level requirement for any active semiconductor entering under-hood, chassis, or cabin automotive domains. Junction temperature rating is -55°C to 150°C, with the minimum breakdown specified at 25°C and the power dissipation derated to zero at 150°C junction. The 1.5 kW peak pulse rating is a non-repetitive peak — the device is not intended for continuous dissipation. Sustained operation above 125°C junction demands thermal relief at the board level. ## SMC package and board integration The DO-214AB (SMC) package is the mid-size surface-mount TVS package. The cathode band marks the polarity on the unidirectional channel — a single polarity direction only. The metal tab at the top of the body is the cathode; the lead frame pad soldered to the PCB is the anode reference. Supplied on Tape & Reel and cut tape. The reel quantity and reel diameter are per the standard SMC carrier tape pitch — confirm reel pitch against the pick-and-place feeder specification before committing to high-volume assembly. AEC-Q101 screening does not change the package footprint; it changes the incoming inspection and lot traceability requirements.","metaTitle":"1.5SMCJ18A-AU_R1_000A1 Zener TVS 18V 1.5kW AEC-Q101","metaDescription":"Panjit 1.5SMCJ18A-AU_R1_000A1, AEC-Q101 automotive TVS diode, 18V standoff, 29.2V clamping, 1.5kW peak pulse, DO-214AB SMC surface mount. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Panjit International Inc.","Type":"Zener","Grade":"Automotive","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Applications":"-","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC (DO-214AB)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"20V","Voltage - Clamping (Max) @ Ipp":"29.2V","Voltage - Reverse Standoff (Typ)":"18V","Current - Peak Pulse (10/1000µs)":"51.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What does AEC-Q101 mean for this TVS diode — is it a standard commercial part?","answer":"AEC-Q101 is the automotive stress qualification for discrete semiconductors. A TVS diode that clears this screening has passed temperature cycling, biased humidity, and mechanical shock/vibration — it is qualified for automotive under-hood, powertrain, and cabin domains where commercial-grade parts are not accepted."},{"question":"What standoff voltage and clamping voltage should I use to protect a 12 V automotive rail?","answer":"A 12 V nominal automotive rail sees load dump transients that can spike above 40 V. The 18 V standoff on this part sits below the 12 V rail maximum operating voltage with sufficient margin, and the 29.2 V clamping ceiling is well within the maximum ratings of most downstream ECU ICs rated for 40 V transients. Confirm the downstream IC absolute maximum rating against 29.2 V before committing the BOM line."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/panjit-international-inc/1.5SMCJ18A-AU_R1_000A1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/panjit-international-inc/1.5SMCJ18A-AU_R1_000A1 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}}