{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UMH33NTN","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"UMH33NTN","canonicalUrl":"https://icboms.com/rohm/UMH33NTN","factsUrl":"https://icboms.com/api/mcp/products/UMH33NTN","rawCanonicalId":null},"summary":{"shortDescription":"ROHM Semiconductor UMH33NTN, dual NPN pre-biased (digital) transistor, 400 mA collector current, 20 V Vce, 2.2 kΩ base resistor, 150 mW, surface-mount SOT-363 (UMT6) package.","salesMarkdown":"## Dual NPN pre-biased transistor in SOT-363 The UMH33NTN from ROHM Semiconductor is a dual NPN pre-biased (digital) transistor array in a 6-pin SOT-363 surface-mount package. Each transistor integrates a 2.2 kΩ base resistor (R1), eliminating the need for an external bias resistor and saving board space in high-density designs. With a maximum collector current of 400 mA and a collector-emitter breakdown voltage of 20 V, it suits low-side switching of relays, LEDs, small motors, and logic-level interface circuits in consumer and industrial control applications. ROHS3 compliant. ## Key ratings and their design impact The 2.2 kΩ base resistor sets the input threshold and saturation drive. At 5 V logic, base current is roughly (5 V – 0.7 V) / 2.2 kΩ ≈ 2 mA, enough to saturate the transistor with a collector load up to 30 mA (Vce(sat) max 100 mV at 3 mA base, 30 mA collector). The 400 mA continuous collector rating and 150 mW power dissipation limit define the load budget — at 20 V Vce, derate continuous current to stay within the package thermal ceiling. The 35 MHz transition frequency is adequate for PWM up to a few hundred kHz.","metaTitle":"UMH33NTN Dual NPN Pre-Biased Transistor, 400 mA, 20 V","metaDescription":"UMH33NTN dual NPN pre-biased transistor, 400 mA Ic, 20 V Vce, 2.2 kΩ base resistor, 150 mW, SOT-363. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Power - Max":"150mW","Mounting Type":"Surface Mount","Package / Case":"6-TSSOP, SC-88, SOT-363","Transistor Type":"2 NPN - Pre-Biased (Dual)","lifecycle_stage":"eol_hot","Resistor - Base (R1)":"2.2kOhms","Frequency - Transition":"35MHz","Supplier Device Package":"UMT6","Vce Saturation (Max) @ Ib, Ic":"100mV @ 3mA, 30mA","Current - Collector (Ic) (Max)":"400mA","Current - Collector Cutoff (Max)":"500nA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"820 @ 10mA, 5V","Voltage - Collector Emitter Breakdown (Max)":"20V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.55","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.55000","currency":"USD"},{"qty":10,"price":"$0.46900","currency":"USD"},{"qty":100,"price":"$0.35020","currency":"USD"},{"qty":500,"price":"$0.27518","currency":"USD"},{"qty":1000,"price":"$0.21264","currency":"USD"},{"qty":3000,"price":"$0.19387","currency":"USD"},{"qty":6000,"price":"$0.18137","currency":"USD"},{"qty":15000,"price":"$0.17700","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/da867b484c00cbf0857d84415ea69abf.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional equivalent to UMH33NTN?","answer":"The UMH37NTN is a direct sibling — same dual NPN pre-biased topology, same package (SOT-363), same 400 mA collector rating, same 20 V Vce. The key difference is the base resistor: UMH37NTN uses 10 kΩ instead of 2.2 kΩ, which shifts the input threshold higher and reduces base drive current. For a drop-in replacement that preserves the 2.2 kΩ base resistor, no exact second-source is listed; check the UMH10NTN if a 50 V rating and lower current (100 mA) are acceptable."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/UMH33NTN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/UMH33NTN when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}