{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6273AHE3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1N6273AHE3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6273AHE3-51","factsUrl":"https://icboms.com/api/mcp/products/1N6273AHE3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor, TransZorb TVS / Zener diode, 1N6273AHE3/51, 1500W peak pulse, unidirectional, DO-201AA axial, AEC-Q101 automotive, -55°C to 175°C junction.","salesMarkdown":"## 1.5KE TVS diode — what the voltage ratings mean The 1N6273AHE3/51: The three voltage specs are the selection story: 10.2V typical reverse standoff is the DC working voltage the diode sees in normal operation; 11.4V minimum breakdown is where it starts conducting; and 16.7V maximum clamping voltage at 89.8A peak pulse current is what the downstream circuitry is guaranteed to survive when the transient fires. A designer sizing the clamping network uses the standoff to set the protection threshold and the peak pulse current to confirm the diode survives the worst-case load dump current. The 89.8A peak pulse rating at 10/1000µs is the IEC 61000-4-5 surge class — it tells you the diode handles the automotive load-dump pulse without degrading. Above that current the clamping voltage rises, so for higher-energy transients a larger 1.5KE rating or a parallel diode arrangement is needed. ## Automotive grade and thermal envelope AEC-Q101 qualification is the automotive stress-screen grade — it means the part passed temperature cycling, humidity bias, and surge life testing per the AEC-Q101 test sequence. For an under-hood ECU input-protection rail, this diode sits in the same thermal zone as the MOSFETs it protects. The base product number is 1N6273, and the /51 suffix is the Vishay automotive screening grade (similar to the MIL-PRF-19500 JAN designation system). ## DO-201AA through-hole footprint and board integration The axial DO-201AA package mounts in holes on a PCB — the leads are the primary thermal path to the board pad and the chassis heatsink if used. For automotive boards, the through-hole form factor is common on legacy ECU designs where the board flexes under vibration and a surface-mount part risks pad lift. Newer automotive designs have migrated to SMC/DO-214AB packages for the same 1.5KE power class, but the DO-201AA is still found in mature platforms and in-service repair stock.","metaTitle":"Vishay 1N6273AHE3/51 Zener TVS Diode, 1500W Peak Pulse","metaDescription":"Vishay 1N6273AHE3/51 AEC-Q101 TransZorb TVS diode, 1500W peak pulse, 10.2V standoff / 16.7V clamping. Obsolete — quoted to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"Automotive, AEC-Q101, TransZorb®","Package":"Bulk","Applications":"Automotive","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Obsolete","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1N6273","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"11.4V","Voltage - Clamping (Max) @ Ipp":"16.7V","Voltage - Reverse Standoff (Typ)":"10.2V","Current - Peak Pulse (10/1000µs)":"89.8A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4554","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/55e3e40e24fd2c3f96443c3e231bf459.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6273AHE3%2F51/alternatives.json"},"ai":{"faq":[{"question":"Where can I source the 1N6273AHE3/51?","answer":"Availability and lot traceability are confirmed at RFQ — franchised and independent surplus channels both carry the 1N6273 base number. Confirm the /51 screening suffix and AEC-Q101 documentation requirements before committing."},{"question":"What series does the 1N6273AHE3/51 belong to?","answer":"The part is classified as an Automotive, AEC-Q101, TransZorb series TVS diode. TransZorb is the Vishay trademark for their glass-passivated junction TVS construction — the passivation seals the junction against moisture ingress and is a key reliability feature in automotive and high-humidity environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6273AHE3-51","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/1N6273AHE3-51 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T16:33:07.049Z","lastPublished":"2026-07-22T16:33:07.049Z","indexable":true}}