{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UMZ30NT106","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"UMZ30NT106","canonicalUrl":"https://icboms.com/rohm/UMZ30NT106","factsUrl":"https://icboms.com/api/mcp/products/UMZ30NT106","rawCanonicalId":null},"summary":{"shortDescription":"ROHM Semiconductor UMZ30NT106 Zener diode array, 1 Pair Common Anode, 30 V, 200 mW, ±2.5%, SC-70 SOT-323, Surface Mount.","salesMarkdown":"## What does a 30 V common-anode Zener array actually do on your board? The UMZ30NT106 is a dual Zener diode in a common-anode configuration — both cathodes are tied together internally, with each anode brought out separately. This means you clamp two independent signal lines to the same reference rail, or use the pair as a bidirectional limiter between two rails. The 30 V nominal breakdown (Vz) sets the voltage at which the diode starts conducting in reverse; below that, it blocks with only 100 nA leakage at 23 V, so it won't load a high-impedance ADC input or a slow serial bus. The ±2.5% tolerance on Vz is tighter than the common ±5% grade — useful if your clamping threshold needs to stay within 0.75 V of 30 V across temperature and lot variation. At 200 mW maximum power, the continuous current through each diode at 30 V is limited to about 6.7 mA; brief transients can exceed that, but sustained overvoltage will exceed the die's thermal capacity. ## Package and board-fit — SC-70 / SOT-323 (UMD3) Housed in a 3-pin SC-70 (also called SOT-323) package, designated UMD3 by ROHM. The footprint is roughly 2.0 × 2.1 mm with a 0.65 mm pin pitch — small enough for dense mixed-signal boards but still hand-solderable with a fine tip. The common anode is on pin 2; the two cathodes are pins 1 and 3. Surface-mount assembly with standard reflow profiles; no exposed pad to worry about. Operating junction temperature is rated to 150 °C, so the part can sit near a warm regulator or on a multilayer board without derating. The 200 mW power limit is the practical constraint in a small package — the thermal resistance of SC-70 is around 300–400 °C/W, meaning a 200 mW dissipation raises the junction about 60–80 °C above ambient.","metaTitle":"UMZ30NT106 ROHM Zener Array, 30V, 200mW, SC-70","metaDescription":"UMZ30NT106 ROHM Semiconductor Zener diode array, 30V nominal, 200mW, ±2.5% tolerance, SC-70 SMD package. Active production, ROHS3 compliant. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±2.5%","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)":"30 V","Current - Reverse Leakage @ Vr":"100 nA @ 23 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.55","stockQuantity":23,"priceTiers":[{"qty":1,"price":"$0.55000","currency":"USD"},{"qty":10,"price":"$0.44800","currency":"USD"},{"qty":100,"price":"$0.30470","currency":"USD"},{"qty":500,"price":"$0.22856","currency":"USD"},{"qty":1000,"price":"$0.17141","currency":"USD"},{"qty":3000,"price":"$0.15713","currency":"USD"},{"qty":6000,"price":"$0.14761","currency":"USD"},{"qty":15000,"price":"$0.13808","currency":"USD"},{"qty":30000,"price":"$0.13350","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/fc07e8c332aea96e3357984335e2bf07.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What tolerance does the UMZ30NT106 offer on its Zener voltage?","answer":"±2.5% on the 30 V nominal Vz. This is tighter than the standard ±5% grade, giving a narrower clamping window for precision protection circuits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/UMZ30NT106","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/UMZ30NT106 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}