{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"RN2418,LF","brand":"Toshiba Semiconductor","brandSlug":"toshiba","productSlug":"RN2418LF","canonicalUrl":"https://icboms.com/toshiba/RN2418LF","factsUrl":"https://icboms.com/api/mcp/products/RN2418%2CLF","rawCanonicalId":null},"summary":{"shortDescription":"Toshiba RN2418,LF PNP pre-biased transistor, 50 V collector-emitter breakdown, 100 mA collector current, 200 mW max power, SOT-23-3 S-Mini surface-mount package, Tape & Reel.","salesMarkdown":"## Pre-biased PNP with integrated 47 kΩ / 10 kΩ divider The RN2418,LF: Rated for 50 V collector-emitter breakdown and 100 mA continuous collector current, with a maximum power dissipation of 200 mW. The 200 MHz transition frequency supports moderate-speed switching — adequate for driving small relays, LEDs, or as a level translator up to a few hundred kilohertz. ## Saturation and gain at the operating point Vce saturation is specified at 300 mV max with a 250 µA base drive and 5 mA collector load — a 50:1 overdrive ratio that keeps the transistor firmly in saturation. Collector cutoff current is 500 nA max — low enough that the transistor does not leak into the load when the input is pulled high (off state). This matters for battery-powered circuits where off-state leakage directly drains the cell. ## Package, compliance, and sourcing The footprint is identical to generic SOT-23 small-signal transistors, so no board layout change is needed when substituting into an existing PNP pre-biased position.","metaTitle":"Toshiba RN2418,LF PNP Pre-Biased Transistor, 50V 100mA","metaDescription":"Toshiba RN2418,LF PNP pre-biased transistor, 50V Vceo, 100mA Ic, 200 mW. SOT-23-3 S-Mini package. Active, ROHS3 compliant. Sourced to order.","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)","Power - Max":"200 mW","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Transistor Type":"PNP - Pre-Biased","lifecycle_stage":"eol_hot","Resistor - Base (R1)":"47 kOhms","Frequency - Transition":"200 MHz","Supplier Device Package":"S-Mini","Resistor - Emitter Base (R2)":"10 kOhms","Vce Saturation (Max) @ Ib, Ic":"300mV @ 250µA, 5mA","Current - Collector (Ic) (Max)":"100 mA","Current - Collector Cutoff (Max)":"500nA","DC Current Gain (hFE) (Min) @ Ic, Vce":"50 @ 10mA, 5V","Voltage - Collector Emitter Breakdown (Max)":"50 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.17","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.17000","currency":"USD"},{"qty":10,"price":"$0.12400","currency":"USD"},{"qty":100,"price":"$0.06670","currency":"USD"},{"qty":500,"price":"$0.05236","currency":"USD"},{"qty":1000,"price":"$0.03636","currency":"USD"},{"qty":3000,"price":"$0.03012","currency":"USD"},{"qty":6000,"price":"$0.02848","currency":"USD"},{"qty":9000,"price":"$0.02424","currency":"USD"},{"qty":30000,"price":"$0.02242","currency":"USD"},{"qty":75000,"price":"$0.01939","currency":"USD"},{"qty":150000,"price":"$0.01612","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source to RN2418,LF?","answer":"The RN2413TE85LF is a same-family peer with identical 47 kOhm base resistor, 50 V Vceo, 100 mA Ic, and 200 mW rating in the same SOT-23-3 package. The only difference is the emitter-base resistor: the RN2413 has no R2 (open), while the RN2418,LF integrates a 10 kOhm R2. For circuits that rely on the internal divider to pull the base low when the input is open, the RN2418,LF is the correct fit. The RN2416,LF (4.7 kOhm R1) and RN2412TE85LF (22 kOhm R1) are parametric alternatives but change the input threshold."},{"question":"Will RN2418,LF drop into a board originally specified for RN2413TE85LF?","answer":"The two parts share the same SOT-23-3 footprint, voltage, current, and power ratings, so the board layout is compatible. The functional difference is the integrated 10 kOhm emitter-base resistor (R2) in the RN2418,LF, which pulls the base low when the input is open or high-impedance — the RN2413 has no internal R2. If the original circuit relied on an external pull-down or the input driver already holds the base low, the RN2418,LF works without rewiring. If the input is left floating, the RN2418,LF's internal R2 keeps the transistor off, which is usually the safer behavior."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/toshiba/RN2418LF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/toshiba/RN2418LF 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}}