{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC91AS_R1_00001","brand":"Panjit International Inc.","brandSlug":"panjit-international-inc","productSlug":"1.5SMC91AS_R1_00001","canonicalUrl":"https://icboms.com/panjit-international-inc/1.5SMC91AS_R1_00001","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC91AS_R1_00001","rawCanonicalId":null},"summary":{"shortDescription":"Panjit International Inc. Zener TVS diode, 1500W peak pulse, 77.8V reverse standoff, 125V clamping, 12A peak pulse, DO-214AB SMC surface mount, -55°C to 150°C junction.","salesMarkdown":"## What the clamping specs mean for your rail The 1.5SMC91AS_R1_00001: The 77.8 V reverse standoff is the working rail the TVS sees in normal operation — the diode stays off and draws only leakage current. That 1.5 kW peak-pulse rating at the standard 10/1000 µs waveform is the 1.5SMC series envelope — it tells you the device survives a single-event surge of that energy without failing short. For a 77.8 V rail the clamping headroom is roughly 47 V — the downstream IC sees 125 V during a surge event, not the full open-circuit spike. The downstream protection rating of whatever sits behind it needs to survive that clamping level as a worst-case transient. ## DO-214AB package and thermal integration The DO-214AB (SMC) is the standard half-watt TVS package at this power class — the cathode bar is the thermal path to the PCB pad. A proper solder footprint with full-metallization under the cathode tab keeps junction temperature within the 150 °C rating under repeated surge events. Without adequate copper area the TJ ceiling hits first, not the peak-pulse energy rating. At high altitude the board runs cooler — the limiting factor stays the clamping energy, not the absolute temperature.","metaTitle":"1.5SMC91AS_R1_00001 1.5SMC91AS R1 00001 TVS Diode 1.5kW","metaDescription":"Panjit Zener TVS, 1500W peak pulse, 77.8V standoff 125V clamp, DO-214AB SMC. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Panjit International Inc.","Type":"Zener","Series":"-","Packaging":"Tape & Reel (TR) Cut Tape (CT)","Part Status":"Active","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","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":"DO-214AB (SMC)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"86.5V","Voltage - Clamping (Max) @ Ipp":"125V","Voltage - Reverse Standoff (Typ)":"77.8V","Current - Peak Pulse (10/1000µs)":"12A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8c092a4c6e1b4ad0e1fe67aff7aedb7a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC91AS_R1_00001/alternatives.json"},"ai":{"faq":[{"question":"What TVS voltage should replace a 1.5SMC91 in a new design?","answer":"The standoff voltage is the selection anchor — pick the next standard standoff above your maximum continuous operating rail with enough margin to avoid leakage current in normal operation. The 1.5SMC series covers a range; if 77.8 V no longer fits the rail, step to the next variant with a standoff above your new nominal."},{"question":"How do I get current pricing and availability for 1.5SMC91AS_R1_00001?","answer":"Sourced to order against your BOM quantity through independent distribution. Submit an RFQ with the order code and required packaging format — Tape & Reel or Cut Tape — along with the target quantity and date code window if your build has a date-code constraint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/panjit-international-inc/1.5SMC91AS_R1_00001","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/1.5SMC91AS_R1_00001 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}}