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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 50V 0.1A SMT3
- Series：DTC124T
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Resistors Included：R1 Only
- Transistor Type：NPN - Pre-Biased
- Current - Collector (Ic) (Max)：100 mA
- Voltage - Collector Emitter Breakdown (Max)：50 V
- Resistor - Base (R1)：22 kOhms
- Resistor - Emitter Base (R2)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic：300mV @ 500µA, 5mA
- Current - Collector Cutoff (Max)：500nA (ICBO)
- Frequency - Transition：250 MHz
- Power - Max：200 mW
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SMT3
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Overview
The DTC124TKAT146 is a single NPN digital transistor manufactured by ROHM Semiconductor, housed in an SMT3 (SOT-346) surface-mount package. It integrates internal biasing resistors to simplify circuit design. Key electrical parameters include a collector-emitter voltage (VCEO) of 50 V and a continuous collector current of 100 mA. The device features a typical input resistance of 22 kOhms and a maximum operating frequency of 250 MHz. Power dissipation is rated at 200 mW, with a minimum DC current gain (hFE) of 100 at 1 mA and 5 V. The emitter-base voltage (VEBO) is specified at 5 V, and the component supports operation up to a maximum temperature of +150 C.
Feature Summary
- Integrates built-in biasing resistors to reduce external component count and PCB space.
- Designed for high-speed switching applications with a transition frequency of 250 MHz.
- Utilizes a compact SMT3 (SOT-346) surface-mount package for automated assembly.
Applications
- General-purpose signal switching in consumer electronics.
- Driver circuits for low-power loads in industrial control systems.
- Level shifting interfaces between microcontrollers and peripheral devices.
Procurement Notes
Verify the complete part number including the suffix AT146 to ensure correct packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Cross-reference datasheet revisions to validate parameter consistency against current production batches.
Selection Notes
Select this component when a single NPN digital transistor with 50 V rating and 100 mA current capacity is required. The 22 kOhm input resistance suits standard logic interface applications. Ensure thermal management accommodates the 200 mW power dissipation limit within the SOT-346 footprint constraints.
Part Context
This part belongs to the DTC124 series of pre-biased transistors from ROHM. It shares the same electrical characteristics as DTC124TUAT106 but utilizes the SOT-346 package instead of SOT-323. The series provides integrated resistor networks for simplified biasing in compact designs.
Replacement Considerations
DTC124TUAT106 offers identical electrical specifications in an SOT-323 package. Verify pinout compatibility and physical footprint differences before substitution. No other direct substitutes are confirmed in public documentation.
