{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC20AHE3/9AT","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC20AHE3-9AT","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC20AHE3-9AT","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC20AHE3%2F9AT","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101 1.5SMC TransZorb, Zener TVS Diode, 1.5SMC20AHE3/9AT, 1500W Peak Pulse, 27.7V Clamp, DO-214AB SMC, Surface Mount.","salesMarkdown":"## AEC-Q101 qualified 1500 W TVS for 17.1 V rails The 1.5SMC20AHE3/9AT: It clamps transients on a 17.1 V reverse standoff rail to 27.7 V maximum, handling a 54.2 A peak pulse current (10/1000 µs waveform). The unidirectional Zener avalanche design protects a single polarity line; with 19 V minimum breakdown voltage, it triggers before the downstream silicon sees overstress. The 1500 W rating means it absorbs a single 10/1000 µs surge up to 54.2 A without failing short — the energy is dissipated as heat through the DO-214AB (SMC) package into the PCB copper. AEC-Q101 qualification covers the full -65°C to 150°C junction temperature range, which includes underhood and engine-bay thermal profiles. The PPAP documentation that accompanies this grade is what an OEM auditor expects to see for any safety- or mission-critical transient protection on the vehicle bus. ## Clamping voltage and surge current — what the ratings mean for the BOM The 27.7 V clamping voltage at 54.2 A peak pulse current is the upper limit the protected rail sees during a surge. If the downstream IC's absolute maximum rating is below that figure, this TVS alone is insufficient — a secondary clamp or series resistor is needed. For a 24 V automotive battery line, the 17.1 V standoff means this part is sized for the 12 V system rail, not the 24 V bus. The 54.2 A peak pulse current at the standard 10/1000 µs telecom waveform is a test condition, not a continuous rating. For a shorter automotive transient (ISO 7637-2 pulse 5a at 400 ms), the energy is lower and the margin improves. For repetitive events, derate the peak power by the pulse train duty cycle per the TransZorb application note. The 1500 W peak pulse power at 25°C ambient derates linearly above 25°C to zero at 150°C junction. In an engine bay at 105°C ambient, the effective peak pulse power is roughly 60% of the 1500 W rating — about 900 W. The BOM must account for this derating when the surge happens at elevated temperature. The DO-214AB (SMC) package is a JEDEC standard surface-mount footprint with a 0.260-inch (6.6 mm) body length and gull-wing leads. The cathode band on the package body identifies the unidirectional polarity — the anode side connects to the rail being protected, the cathode to ground. The solder pad footprint per Vishay application note AN-994 provides the copper area needed for the transient thermal impedance. The Tape & Reel (TR) packaging format is the standard for automated pick-and-place assembly. The reel quantity is 3000 pieces per reel for the DO-214AB package, per Vishay packaging specification. ## Compliance and procurement posture Production status is Active — the 1.5SMC20AHE3/9AT is in current manufacture by Vishay General Semiconductor - Diodes Division. The base product number 1.5SMC20 covers the full family; the AHE3 suffix denotes the AEC-Q101 qualified, RoHS-compliant, halogen-free variant in the DO-214AB package. For procurement: this part is sourced through authorized and independent distribution channels. The AEC-Q101 PPAP documentation is available from Vishay upon request for production lots.","metaTitle":"Vishay 1.5SMC20AHE3/9AT TVS, 1500W, DO-214AB","metaDescription":"Vishay 1.5SMC20AHE3/9AT Zener TVS, Automotive AEC-Q101, 1500W peak pulse, 27.7V clamp, DO-214AB. Active production, order through RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"Automotive, AEC-Q101, 1.5SMC, TransZorb®","Package":"Tape & Reel (TR)","Applications":"Automotive","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC20","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMCJ)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"19V","Voltage - Clamping (Max) @ Ipp":"27.7V","Voltage - Reverse Standoff (Typ)":"17.1V","Current - Peak Pulse (10/1000µs)":"54.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What compliance documentation is available for the 1.5SMC20AHE3/9AT?","answer":"The AHE3 suffix indicates AEC-Q101 automotive qualification, RoHS compliance, and halogen-free construction per Vishay's green product definition. The AEC-Q101 PPAP documentation, including the qualification test report and reliability data, is available from Vishay upon request for production lots."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC20AHE3-9AT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC20AHE3-9AT 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}}