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Toshiba Semiconductor RN4908,LF(CT — Discrete Semiconductors
Toshiba Semiconductor

Toshiba RN4908,LF(CT Dual NPN/PNP Pre-Biased, SOT-363

MPNRN4908,LF(CT
End of Life

Toshiba Semiconductor RN4908 series dual NPN/PNP pre-biased transistor, 200 mW, 50 V, 100 mA, SOT-363, Tape & Reel / Cut Tape.

$0.27Ref. price · indicative, final on quote
Packaging6-TSSOP, SC-88, SOT-363
StockIn Stock (28)
Lead timeIn Stock wk
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

RN4908,LF(CT Technical Specifications
ParameterValue
Mounting typeSurface Mount
FET type1 NPN, 1 PNP - Pre-Biased (Dual)
Voltage - collector emitter breakdown50V
Current - collector (Ic)100mA
Current - collector cutoff500nA
DC current gain (hFE) (Min) @ ic, vce80 @ 10mA, 5V
Power - max200mW
Frequency200MHz, 250MHz
PackageTape & Reel (TR); Cut Tape (CT)
Case6-TSSOP, SC-88, SOT-363
Resistor - base (R1)22kOhms
Resistor - emitter base (R2)47kOhms
Vce saturation (Max) @ ib, ic300mV @ 250µA, 5mA

Product details

Dual pre-biased transistor in SOT-363

The Toshiba RN4908,LF(CT integrates one NPN and one PNP pre-biased transistor in a single 6-pin SOT-363 package, saving board space compared to two discrete bias-resistor transistors. Each transistor includes built-in bias resistors: 22 kΩ base resistor (R1) and 47 kΩ base-emitter resistor (R2), eliminating external resistor components for the switching circuit. Rated for 50 V collector-emitter breakdown and 100 mA continuous collector current, with a power dissipation ceiling of 200 mW that sets the thermal budget for the SOT-363 footprint.

Switching performance and saturation

Transition frequency reaches 200 MHz for the NPN side and 250 MHz for the PNP side, supporting switching applications up to the low-MHz range. Vce saturation is 300 mV maximum at 250 µA base current and 5 mA collector current, giving a low on-state voltage drop for logic-level loads.

Fully ROHS3 compliant, with no restricted substances above the threshold limits.

Frequently asked questions

What is the RN4908,LF(CT used for?

This dual NPN/PNP pre-biased transistor is designed for low-current switching applications where built-in bias resistors simplify the BOM. Typical uses include load switches, relay drivers, logic-level translators, and inverter circuits in consumer and industrial electronics.

How does RN4908,LF(CT compare to RN4988,LXHF(CT?

The RN4988,LXHF(CT is a close functional peer with identical R1 (22 kΩ) and R2 (47 kΩ) resistor values, the same 200 mW power rating, 50 V breakdown, and 100 mA collector current. Both are dual NPN/PNP pre-biased transistors in surface-mount packages, making them direct alternatives for the same BOM position.

What package does the RN4908,LF(CT come in?

It is supplied in a 6-pin SOT-363 package (also designated SC-88 or US6), measuring approximately 2.0 mm × 1.25 mm with a 0.65 mm pin pitch. The LF(CT suffix indicates Tape & Reel or Cut Tape packaging options.