{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"RN1608(TE85L,F)","brand":"Toshiba Semiconductor","brandSlug":"toshiba","productSlug":"RN1608~1TE85L~6F~2","canonicalUrl":"https://icboms.com/toshiba/RN1608~1TE85L~6F~2","factsUrl":"https://icboms.com/api/mcp/products/RN1608(TE85L%2CF)","rawCanonicalId":null},"summary":{"shortDescription":"Toshiba RN1608(TE85L,F) dual NPN pre-biased transistor, 50V VCEO, 100mA IC, 300mW, 250MHz fT, integrated R1=22kΩ R2=47kΩ, SC-74 (SOT-457) surface mount.","salesMarkdown":"## Two NPNs with bias resistors baked in The Toshiba RN1608(TE85L,F) packs two NPN transistors plus their base bias network — a 22 kΩ series resistor and a 47 kΩ resistor from base to emitter — into a single SC-74 (SOT-457) package. Transition frequency of 250 MHz is more than adequate for logic-level translation up into the low-MHz range and for switching loads like relay coils or LED strings where the 100 nA collector cutoff keeps off-state leakage negligible. The 300 mV saturation at 250 µA base drive and 5 mA collector current means the output stage stays cool driving modest loads; the 80 minimum hFE at 10 mA, 5 V confirms decent gain headroom for typical microcontroller interface levels. ## SC-74 package — footprint and thermal reality The SC-74 (SOT-457) is a six-lead surface-mount package. The 300 mW maximum power dissipation is the total for both transistors combined — if you run both channels at high current, derate accordingly. The SM6 supplier device package code is Toshiba's internal designation for this footprint; the standard SOT-457 land pattern applies.","metaTitle":"Toshiba RN1608(TE85L,F) dual NPN pre-biased transistor","metaDescription":"Toshiba RN1608(TE85L,F) dual NPN pre-biased transistor with integrated 22k/47k resistors. 50V VCEO, 100mA IC, 300mW, 250MHz fT. SC-74 (SOT-457) package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Power - Max":"300mW","Mounting Type":"Surface Mount","Package / Case":"SC-74, SOT-457","Transistor Type":"2 NPN - Pre-Biased (Dual)","lifecycle_stage":"eol_hot","Resistor - Base (R1)":"22kOhms","Frequency - Transition":"250MHz","Supplier Device Package":"SM6","Resistor - Emitter Base (R2)":"47kOhms","Vce Saturation (Max) @ Ib, Ic":"300mV @ 250µA, 5mA","Current - Collector (Ic) (Max)":"100mA","Current - Collector Cutoff (Max)":"100nA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"80 @ 10mA, 5V","Voltage - Collector Emitter Breakdown (Max)":"50V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.49","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.49000","currency":"USD"},{"qty":10,"price":"$0.36700","currency":"USD"},{"qty":100,"price":"$0.20770","currency":"USD"},{"qty":500,"price":"$0.13756","currency":"USD"},{"qty":1000,"price":"$0.10547","currency":"USD"},{"qty":3000,"price":"$0.08904","currency":"USD"},{"qty":6000,"price":"$0.08014","currency":"USD"},{"qty":15000,"price":"$0.07123","currency":"USD"},{"qty":30000,"price":"$0.06678","currency":"USD"},{"qty":75000,"price":"$0.06300","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c580c4b9e6d07716cce64a5546a073bd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between RN1608 and RN1607?","answer":"The RN1608 uses a 22 kΩ base resistor (R1) and 47 kΩ base-emitter resistor (R2). The RN1607 uses a different resistor pair — 10 kΩ and 47 kΩ respectively. That shifts the base-drive current at a given input voltage, so the two parts are not drop-in equivalents without checking the input drive level and saturation margin."},{"question":"What is the replacement for RN1608?","answer":"No official replacement or second-source part is listed in the available documentation. If a drop-in substitute is needed, compare the resistor divider ratio (22k/47k) and the SC-74 footprint against other Toshiba pre-biased dual NPNs such as the RN1607, RN1609, or RN1610 series — but verify the bias resistor values match your circuit's base-drive requirement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/toshiba/RN1608~1TE85L~6F~2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/toshiba/RN1608~1TE85L~6F~2 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}}