{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UMG4NTR","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"UMG4NTR","canonicalUrl":"https://icboms.com/rohm/UMG4NTR","factsUrl":"https://icboms.com/api/mcp/products/UMG4NTR","rawCanonicalId":null},"summary":{"shortDescription":"Rohm Semiconductor UMG4NTR, dual NPN pre-biased transistor, 50V Vce, 100mA Ic, 250MHz fT, 10kΩ base resistor, 150mW max power, SOT-353 surface-mount package.","salesMarkdown":"## Dual NPN pre-biased transistor in SOT-353 The Rohm Semiconductor UMG4NTR integrates two NPN pre-biased transistors in a single 5-pin SOT-353 surface-mount package. Each transistor includes a 10 kΩ base resistor (R1) on-chip, eliminating the need for an external bias resistor and reducing component count in switching and driver circuits. The device is rated for a collector-emitter breakdown voltage of 50 V and a maximum collector current of 100 mA, with a transition frequency of 250 MHz. Maximum power dissipation is 150 mW. The 50 V Vce breakdown gives comfortable headroom for 24 V or 48 V industrial rails, with derating margin for transients. The 100 mA Ic maximum suits low-current switching loads — relay coils, LED indicators, logic-level interface buffers — where a single discrete transistor would be oversized. The 10 kΩ base resistor sets a fixed drive current; for a 5 V logic input, base current is approximately (5 V - 0.7 V) / 10 kΩ ≈ 430 µA, which saturates the transistor at collector currents up to about 43 mA (assuming hFE of 100 at 1 mA). For loads above that, verify saturation margin against the 300 mV Vce(sat) spec at 10 mA.","metaTitle":"UMG4NTR dual NPN pre-biased transistor","metaDescription":"UMG4NTR dual NPN pre-biased transistor from Rohm Semiconductor. 50V Vce, 100mA Ic, 250MHz fT, 10kΩ base resistor, 150mW max power. SOT-353 surface-mount","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":"5-TSSOP, SC-70-5, SOT-353","Transistor Type":"2 NPN - Pre-Biased (Dual)","lifecycle_stage":"eol_hot","Resistor - Base (R1)":"10kOhms","Frequency - Transition":"250MHz","Supplier Device Package":"UMT5","Vce Saturation (Max) @ Ib, Ic":"300mV @ 1mA, 10mA","Current - Collector (Ic) (Max)":"100mA","DC Current Gain (hFE) (Min) @ Ic, Vce":"100 @ 1mA, 5V","Voltage - Collector Emitter Breakdown (Max)":"50V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.47","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.47000","currency":"USD"},{"qty":10,"price":"$0.34800","currency":"USD"},{"qty":100,"price":"$0.19690","currency":"USD"},{"qty":500,"price":"$0.13038","currency":"USD"},{"qty":1000,"price":"$0.09996","currency":"USD"},{"qty":3000,"price":"$0.08692","currency":"USD"},{"qty":6000,"price":"$0.07823","currency":"USD"},{"qty":15000,"price":"$0.06954","currency":"USD"},{"qty":30000,"price":"$0.06519","currency":"USD"},{"qty":75000,"price":"$0.06150","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a4e79c817c99f94a296a39487561aec6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is UMG4NTR a pre-biased transistor?","answer":"Yes. The UMG4NTR is a dual NPN pre-biased transistor. Each transistor includes an integrated 10 kΩ base resistor (R1), so no external bias resistor is needed for typical switching applications."},{"question":"Which transistor can replace UMG4NTR?","answer":"A close functional alternative is the UMH9NTN, which is also a dual NPN pre-biased transistor in the same SOT-353 package with a 10 kΩ base resistor. The UMH9NTN adds a 47 kΩ emitter-base resistor (R2) for improved off-state leakage control. The UMG8NTR uses a 4.7 kΩ base resistor and a 47 kΩ emitter-base resistor, which changes the drive current and saturation characteristics. Verify the resistor network and saturation voltage against your circuit before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/UMG4NTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/UMG4NTR 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}}