{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"RN4981FE,LXHF(CT","brand":"Toshiba Semiconductor","brandSlug":"toshiba","productSlug":"RN4981FELXHFCT","canonicalUrl":"https://icboms.com/toshiba/RN4981FELXHFCT","factsUrl":"https://icboms.com/api/mcp/products/RN4981FE%2CLXHF(CT","rawCanonicalId":null},"summary":{"shortDescription":"Toshiba RN4981FE,LXHF(CT — Automotive AEC-Q101 dual NPN/PNP pre-biased transistor, 50V Vce, 100mA Ic, 4.7kΩ base & emitter resistors, SOT-563 surface mount.","salesMarkdown":"## Why this dual pre-biased part exists The Toshiba RN4981FE,LXHF(CT packs one NPN and one PNP pre-biased transistor into a single SOT-563 package. Each transistor has its own 4.7kΩ base resistor (R1) and 4.7kΩ emitter-base resistor (R2) built in — no external bias network needed. ## Automotive qualification — what it means for sourcing This part carries AEC-Q101 qualification, meaning it has passed the automotive-grade stress tests (high-temperature reverse bias, temperature cycling, autoclave, etc.). ## Ratings that drive the fit decision Collector-emitter breakdown is 50V minimum, which gives comfortable margin on a 12V automotive rail and still covers 24V systems with derating. Maximum collector current is 100mA per transistor — sized for relay drivers, solenoid pre-drivers, and logic-level signal inversion, not power switching. The 300mV saturation voltage at 250µA base and 5mA collector is tight enough to keep dissipation low in a SOT-563 package rated for 100mW total power. Transition frequency is 250MHz for the NPN side and 200MHz for the PNP, so switching up to a few MHz is fine; above that the gain roll-off starts to matter. ## Package and footprint reality The RN4981FE comes in a SOT-563 package (also listed as SOT-666) with the supplier device code ES6. It is a surface-mount, six-lead package roughly 1.6mm x 1.6mm — small enough that hand-soldering is tricky; a hot-air rework station or reflow profile is the practical assembly method. The land pattern follows the standard SOT-563 footprint in the IPC-7351B nominal set.","metaTitle":"RN4981FE,LXHF(CT Dual Pre-Biased Transistor, AEC-Q101, 50V","metaDescription":"Automotive AEC-Q101 dual NPN/PNP pre-biased transistor in SOT-563. 50V Vce, 100mA Ic, built-in 4.7kΩ resistors. Available to order.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q101","packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Series":"Automotive, AEC-Q101","Package":"Tape & Reel (TR); Cut Tape (CT)","Power - Max":"100mW","Mounting Type":"Surface Mount","Package / Case":"SOT-563, SOT-666","Transistor Type":"1 NPN, 1 PNP - Pre-Biased (Dual)","lifecycle_stage":"eol_hot","Resistor - Base (R1)":"4.7kOhms","Frequency - Transition":"250MHz, 200MHz","Supplier Device Package":"ES6","Resistor - Emitter Base (R2)":"4.7kOhms","Vce Saturation (Max) @ Ib, Ic":"300mV @ 250µA, 5mA","Current - Collector (Ic) (Max)":"100mA","Current - Collector Cutoff (Max)":"500nA","DC Current Gain (hFE) (Min) @ Ic, Vce":"30 @ 10mA, 5V","Voltage - Collector Emitter Breakdown (Max)":"50V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.39","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.39000","currency":"USD"},{"qty":10,"price":"$0.29100","currency":"USD"},{"qty":100,"price":"$0.18130","currency":"USD"},{"qty":500,"price":"$0.12402","currency":"USD"},{"qty":1000,"price":"$0.09540","currency":"USD"},{"qty":2000,"price":"$0.08586","currency":"USD"},{"qty":4000,"price":"$0.08586","currency":"USD"},{"qty":8000,"price":"$0.08109","currency":"USD"},{"qty":12000,"price":"$0.07394","currency":"USD"},{"qty":28000,"price":"$0.06917","currency":"USD"},{"qty":100000,"price":"$0.06750","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ab3a4a2b2df0d4a79f66e2b4b552ca86.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the RN4981FE automotive qualified (AEC-Q101)?","answer":"Yes. The series is listed as Automotive, AEC-Q101, so it has passed the automotive stress-test suite required for under-hood and cabin applications."},{"question":"Can I use RN4981FE as a replacement for an older dual transistor?","answer":"Possibly, if the older part is a dual NPN/PNP with 4.7kΩ base and emitter-base resistors and a 50V / 100mA rating. The SOT-563 footprint is smaller than many older SOT-363 or SOT-23-6 packages, so a board respin or adapter may be needed. Check the pinout against the original part's datasheet before committing."},{"question":"What is the recommended land pattern for RN4981FE (SOT-563)?","answer":"The standard SOT-563 land pattern per IPC-7351B is the starting point. The package is roughly 1.6mm x 1.6mm with 0.5mm lead pitch. No manufacturer-specific land pattern is in the record, so the generic footprint is the safe bet."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/toshiba/RN4981FELXHFCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/toshiba/RN4981FELXHFCT 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}}