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Toshiba Semiconductor RN4989(T5L,F,T) — Memory (DRAM / SRAM / Flash / EEPROM)
Toshiba Semiconductor

RN4989(T5L,F,T) NPN/PNP Pre-Biased Dual Transistor, 50V

MPNRN4989(T5L,F,T)
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Toshiba RN4989(T5L,F,T) dual NPN/PNP pre-biased transistor, 50V VCEO, 100mA Ic, 200mW max power, SOT-363 surface-mount package.

$0.3Ref. price · indicative, final on quote
RN4989(T5L,F,T) datasheet
Packaging6-TSSOP, SC-88, SOT-363
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Specifications

RN4989(T5L,F,T) Technical Specifications
ParameterValue
Mounting typeSurface Mount
FET type1 NPN, 1 PNP - Pre-Biased (Dual)
Voltage - collector emitter breakdown50V
Current - collector (Ic)100mA
Current - collector cutoff100µA (ICBO)
DC current gain (hFE) (Min) @ ic, vce70 @ 10mA, 5V
Power - max200mW
Frequency250MHz, 200MHz
PackageTape & Reel (TR); Cut Tape (CT)
Case6-TSSOP, SC-88, SOT-363
Resistor - base (R1)47kOhms
Resistor - emitter base (R2)22kOhms
Vce saturation (Max) @ ib, ic300mV @ 250µA, 5mA

Product details

Dual pre-biased transistor in a single SOT-363

The Toshiba RN4989(T5L,F,T) integrates one NPN and one PNP pre-biased transistor in a single 6-pin SOT-363 (US6) surface-mount package. Each transistor includes built-in bias resistors — 47 kΩ base (R1) and 22 kΩ emitter-base (R2) — eliminating the need for external resistor pairs in low-current switching and interface circuits. Collector-emitter breakdown is rated at 50 V, with a maximum collector current of 100 mA per transistor and total package dissipation of 200 mW.

Saturation and gain at typical drive

Vce(sat) is specified at 300 mV maximum with 250 µA base current driving 5 mA collector current — a common condition for logic-level interface and relay pre-drive. DC current gain (hFE) is a minimum of 70 at 10 mA collector current and 5 V Vce, confirming useful beta for saturated switching. Transition frequency is 250 MHz for the NPN side and 200 MHz for the PNP, adequate for low-speed PWM and digital signal inversion up to a few megahertz.

Frequently asked questions

Is RN4989(T5L,F,T) RoHS compliant?

Yes, the RN4989(T5L,F,T) is listed as RoHS Compliant.

Can RN4989 replace RN4988?

The RN4989 is a dual NPN/PNP pre-biased transistor with 47 kΩ base and 22 kΩ emitter-base resistors. The RN4988 is a similar dual part but with different internal resistor values. Verify the resistor values in your circuit before substituting.