{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N4747A-TAP","brand":"Vishay","brandSlug":"vishay","productSlug":"1N4747A-TAP","canonicalUrl":"https://icboms.com/vishay/1N4747A-TAP","factsUrl":"https://icboms.com/api/mcp/products/1N4747A-TAP","rawCanonicalId":null},"summary":{"shortDescription":"Vishay 1N4747A-TAP, Automotive AEC-Q101 series, Zener Diode, 20 V nominal, ±5% tolerance, 1.3 W max, DO-204AL (DO-41) axial package, 175°C junction temperature.","salesMarkdown":"## 20 V rail clamp at 1.3 W — what that means on the board The 1N4747A-TAP is a 20 V zener diode rated for 1.3 W continuous dissipation in the DO-204AL (DO-41) axial package. That 20 V nominal is the voltage where it starts conducting in reverse breakdown — useful for clamping a 15 V or 18 V supply rail, or as a reference in a shunt regulator. The ±5% tolerance means the actual breakdown lands between 19 V and 21 V, tight enough for most protection and reference circuits without trimming. ## Automotive-grade — AEC-Q101 and 175°C junction This part carries the Automotive, AEC-Q101 qualification, which means it has passed the stress tests for under-hood and chassis-domain electronics — thermal cycling, high-temperature reverse bias, and humidity. The 175°C maximum junction temperature gives headroom over the 150°C common on standard zeners; useful if the diode sits near an exhaust manifold or inside a sealed ECU enclosure where ambient heat builds. ## Active production — no obsolescence headache No last-time-buy clock is running, no forced redesign waiting. ## Through-hole axial — field-swappable with a soldering iron DO-204AL (DO-41) is the classic axial-lead package. The banded cathode end is moulded into the body — no orientation guesswork. On a site repair, you can pull the old one and solder this in with a standard iron; no hot-air station needed. The Tape & Box (TB) or Cut Tape (CT) packaging options let you order the quantity that matches the job.","metaTitle":"1N4747A-TAP Zener Diode, 20 V, 1.3 W, AEC-Q101, DO-41","metaDescription":"1N4747A-TAP is a 20 V, 1.3 W zener diode in DO-204AL (DO-41) axial package. Automotive AEC-Q101 qualified, 175°C junction temp.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q101","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Series":"Automotive, AEC-Q101","Package":"Tape & Box (TB); Cut Tape (CT)","Tolerance":"±5%","Power - Max":"1.3 W","Mounting Type":"Through Hole","Package / Case":"DO-204AL, DO-41, Axial","lifecycle_stage":"eol_hot","Impedance (Max) (Zzt)":"22 Ohms","Operating Temperature":"175°C (TJ)","Supplier Device Package":"DO-204AL (DO-41)","Voltage - Zener (Nom) (Vz)":"20 V","Current - Reverse Leakage @ Vr":"5 µA @ 15.2 V","Voltage - Forward (Vf) (Max) @ If":"1.2 V @ 200 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.33","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.33000","currency":"USD"},{"qty":10,"price":"$0.27300","currency":"USD"},{"qty":100,"price":"$0.14500","currency":"USD"},{"qty":500,"price":"$0.09540","currency":"USD"},{"qty":1000,"price":"$0.06487","currency":"USD"},{"qty":2000,"price":"$0.05851","currency":"USD"},{"qty":5000,"price":"$0.05088","currency":"USD"},{"qty":10000,"price":"$0.04325","currency":"USD"},{"qty":25000,"price":"$0.04070","currency":"USD"},{"qty":50000,"price":"$0.03960","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7b3ea02673323aeb489d2ce452d9dbc7.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is 1N4747A-TAP automotive qualified?","answer":"Yes, it belongs to the Automotive, AEC-Q101 series, which means it has passed the automotive-grade qualification tests for reliability under harsh conditions."},{"question":"What is the difference between 1N4747A-TAP and 1N4747A?","answer":"The -TAP suffix indicates the packaging option — Tape & Box (TB) or Cut Tape (CT) — rather than a change in the die or electrical specs. The core ratings (20 V, 1.3 W, ±5%, AEC-Q101) are the same."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/1N4747A-TAP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/1N4747A-TAP when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}