Skip to main content
Log in
Toshiba Semiconductor RN1115,LF(CT — Microcontrollers & Processors (MCU / MPU / DSP)

RN1115,LF(CT NPN Pre-Biased Transistor, 50V 100mA SC-75

MPNRN1115,LF(CT
End of Life

Toshiba RN1115,LF(CT NPN pre-biased transistor, 50 V Vce, 0.1 A Ic, 250 MHz fT, SC-75 SOT-416 surface mount, 100 mW power dissipation.

$0.21Ref. price · indicative, final on quote
Toshiba Semiconductor RN1115,LF(CT datasheet (PDF)
PackagingSC-75, SOT-416
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

RN1115,LF(CT specifications
ParameterValue
MountingSurface Mount
FET typeNPN - Pre-Biased
Voltage - collector emitter breakdown50 V
Current - collector (Ic)100 mA
Current - collector cutoff500nA
DC current gain (hFE) (Min) @ ic, vce50 @ 10mA, 5V
Power - max100 mW
Frequency250 MHz
PackageTape & Reel (TR); Cut Tape (CT)
CaseSC-75, SOT-416
Resistor - base (R1)2.2 kOhms
Resistor - emitter base (R2)10 kOhms
Vce saturation (Max) @ ib, ic300mV @ 250µA, 5mA

Product details

Pre-biased NPN for simplified switching

The Toshiba RN1115,LF(CT is an NPN pre-biased transistor in a SC-75 (SOT-416) surface-mount package. The integrated bias resistors — 2.2 kOhms base (R1) and 10 kOhms emitter-base (R2) — eliminate two external resistors from the BOM, saving board space and placement cost in high-volume switching applications.

250 MHz transition frequency — what it buys you

With a transition frequency of 250 MHz, this part switches cleanly at speeds well above what a general-purpose 150 MHz transistor manages. That margin matters when the collector drives a clock line, a serial data buffer, or a low-power RF stage up to low-VHF frequencies. The 300 mV saturation voltage at 250 µA base / 5 mA collector keeps on-state losses low in battery-powered designs.

It is ROHS3 compliant.

Frequently asked questions

Which transistors can replace RN1115?

The RN1417(TE85L,F) is a close functional peer — also an NPN pre-biased type in a surface-mount package, but with different internal resistor values (10 kOhms base, 4.7 kOhms emitter-base). Verify the bias ratio against your circuit before substituting.

Can RN1115 be used for 5V logic translation?

Yes. With a 50 V Vce breakdown and 100 mA Ic rating, the RN1115 handles 5 V logic-level translation comfortably. The pre-biased resistors set the base drive for a 5 V logic-high, so no external current-limiting resistor is needed on the base.