{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UMZ18NFHT106","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"UMZ18NFHT106","canonicalUrl":"https://icboms.com/rohm/UMZ18NFHT106","factsUrl":"https://icboms.com/api/mcp/products/UMZ18NFHT106","rawCanonicalId":null},"summary":{"shortDescription":"ROHM Semiconductor Automotive, AEC-Q101 zener diode array, UMZ18NFHT106, 18 V nominal, 200 mW, 1 Pair Common Anode, SC-70 SOT-323, Surface Mount.","salesMarkdown":"## Automotive-grade terminal protection in a dual-package The UMZ18NFHT106 is a common-anode zener diode array from ROHM Semiconductor, qualified to AEC-Q101 for automotive applications. The 18 V nominal zener voltage clamps transients on signal or low-power supply lines, protecting downstream ICs from overvoltage events. The 200 mW power rating means this is a signal-level protection device — it handles ESD and short-duration surges, not continuous power dissipation. Reverse leakage is specified at 100 nA maximum when biased at 13 V. In a 12 V automotive rail application, that leakage is negligible — it will not pull down a high-impedance sensor output or drain a battery in standby. The common-anode configuration lets you clamp two independent lines to a single reference, saving a package compared to two discrete zeners. Housed in the SC-70 (SOT-323) surface-mount package, the UMZ18NFHT106 occupies about 2.0 × 2.1 mm of board area. The UMD3 supplier device package is the standard ROHM designation for this footprint. The 150°C maximum junction temperature gives thermal margin in under-hood or engine-bay environments where ambient temperatures can exceed 105°C. The ±2.19% tolerance on the zener voltage is tight enough for clamping thresholds where the exact breakdown point matters — for example, protecting a 15 V rail where you need the zener to conduct before the downstream regulator's abs-max rating.","metaTitle":"ROHM UMZ18NFHT106 Zener Array, 18 V, AEC-Q101, SC-70","metaDescription":"ROHM UMZ18NFHT106 automotive zener diode array, 18 V nominal, 200 mW, common-anode pair in SC-70. Active production, ROHS3 compliant. Request a quote.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q101","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"Automotive, AEC-Q101","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±2.19%","Power - Max":"200 mW","Configuration":"1 Pair Common Anode","Mounting Type":"Surface Mount","Package / Case":"SC-70, SOT-323","lifecycle_stage":"eol_hot","Operating Temperature":"150°C (TJ)","Supplier Device Package":"UMD3","Voltage - Zener (Nom) (Vz)":"18 V","Current - Reverse Leakage @ Vr":"100 nA @ 13 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.47","priceTiers":[{"qty":1,"price":"$0.47000","currency":"USD"},{"qty":10,"price":"$0.38200","currency":"USD"},{"qty":100,"price":"$0.26020","currency":"USD"},{"qty":500,"price":"$0.19516","currency":"USD"},{"qty":1000,"price":"$0.14638","currency":"USD"},{"qty":3000,"price":"$0.13418","currency":"USD"},{"qty":6000,"price":"$0.12605","currency":"USD"},{"qty":15000,"price":"$0.11791","currency":"USD"},{"qty":30000,"price":"$0.11400","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/da73b486bd086fd43638ab80a93fa690.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/UMZ18NFHT106/alternatives.json"},"ai":{"faq":[{"question":"What is the UMZ18NFHT106 used for?","answer":"It is a common-anode zener diode array for terminal protection in automotive electronics. The 18 V clamping voltage protects 12 V or 15 V signal and supply lines from overvoltage transients, and the AEC-Q101 qualification makes it suitable for under-hood and chassis-mounted ECUs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/UMZ18NFHT106","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/UMZ18NFHT106 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}}