{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC7.5CAHM3/I","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC7.5CAHM3-I","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC7.5CAHM3-I","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC7.5CAHM3%2FI","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor, Automotive AEC-Q101, 1.5SMC TransZorb® bidirectional TVS Zener diode, 1.5SMC7.5CAHM3/I, 6.4V standoff, 11.3V clamping @ 133A, 1.5kW peak pulse, DO-214AB SMC, surface mount, Tape & Reel.","salesMarkdown":"## What the 11.3V clamping and 133A peak pulse mean for transient protection The 1.5SMC7.5CAHM3/I: The 1.5kW peak pulse rating is the surge energy the device can survive once in the 10/1000µs event window, which is the standard automotive surge shape. A TVS that clamps harder (lower clamping voltage) limits the overvoltage stress on the protected node more aggressively; 11.3V at the board rail is the clamping ceiling for a line that runs at or near the nominal 5V or 12V rail in telecom or automotive edge nodes. The 6.4V reverse standoff voltage is the working voltage below which the TVS conducts no current — the line can sit at 6.4V continuously without the device drawing leakage. This gap between 6.4V standoff and 7.13V minimum breakdown (where conduction begins) gives the protected rail a clean margin under normal operation. ## AEC-Q101 qualification and the CA bidirectional suffix The CA in the order code confirms the device is bidirectional — it clamps both polarities of transient voltage, which is the required configuration for many automotive and telecom supply rails where the signal ground reference is shared and both positive and negative transients can appear on the line. The HM3/I suffix marks this as automotive-grade with the internal construction and screening flow to match. The 1.5SMC series carries the TransZorb® legacy — Vishay's proprietary junction design that provides controlled avalanche characteristics during transient events, differentiating it from a plain Zener that is not characterised for avalanche operation under surge conditions. ## DO-214AB SMC footprint and telecom/automotive deployment The DO-214AB (SMC) package is the mid-size SMA-family footprint — larger than the SMB (DO-214AA) and smaller than the SMC radial-lead variant. The cathode bar marks polarity on the sleeve. It solders with a standard IR or wave profile and the thermal pad under the body ties to the PCB copper for transient heat dissipation during a surge event — the clamping performance is rated with the recommended pad size, so verify the land pattern matches the datasheet layout if the board sees repeated surge events.","metaTitle":"1.5SMC7.5CAHM3/I Vishay TVS Zener Diode, 11.3V Clamping","metaDescription":"Vishay 1.5SMC7.5CAHM3/I bidirectional TVS Zener diode, AEC-Q101, 1.5kW peak pulse, 11.3V clamping, DO-214AB SMC, -65 to 150°C. Sourced to order on 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, Telecom","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC7.5","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMC)","Voltage - Breakdown (Min)":"7.13V","Voltage - Clamping (Max) @ Ipp":"11.3V","Voltage - Reverse Standoff (Typ)":"6.4V","Current - Peak Pulse (10/1000µs)":"133A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC7.5CAHM3%2FI/alternatives.json"},"ai":{"faq":[{"question":"What does the CA suffix mean on the 1.5SMC7.5CAHM3/I?","answer":"The CA marks the device as bidirectional — it clamps both positive and negative transients. The CB variant in this series is unidirectional. Choosing bidirectional matters when the protected line has a ground-referenced signal or when both polarities of surge can appear on the line, which is common in automotive and telecom distribution."},{"question":"Where does the 1.5SMC7.5CAHM3/I fit vs other 1.5SMC diodes?","answer":"The 1.5SMC7.5 in the base number sets the breakdown voltage at 7.13V minimum — that is the standoff and breakdown family for this specific part. Other 1.5SMCxxCA variants carry different standoff and clamping voltages matched to different working rails (12V, 24V, 48V). The CA bidirectional and CB unidirectional variants share the same footprint and pinout, so a board laid out for one polarity variant can accept the other with no layout change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC7.5CAHM3-I","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/1.5SMC7.5CAHM3-I 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}}