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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 50V 0.1A SMT3
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Resistors Included：R1 and R2
- Transistor Type：NPN - Pre-Biased
- Current - Collector (Ic) (Max)：100 mA
- Voltage - Collector Emitter Breakdown (Max)：50 V
- Resistor - Base (R1)：2.2 kOhms
- Resistor - Emitter Base (R2)：10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce：33 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic：300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max)：500nA
- 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 DTC123YKAT146 is a single NPN digital transistor manufactured by Rohm Semiconductor, featuring built-in bias resistors for simplified circuit design. It operates with a maximum collector-emitter voltage of 50 V and a continuous collector current of 100 mA. The device incorporates a base resistor (R1) of 2.2 kOhms and an emitter-base resistor (R2) of 10 kOhms. Packaged in the SMT3 (SOT-23-3) surface-mount format, it supports a power dissipation of 200 mW and offers a transition frequency of 200 MHz.
Feature Summary
- Integrates dual bias resistors to reduce external component count and simplify PCB layout.
- Provides high-speed switching capabilities suitable for logic interface applications.
- Utilizes a compact surface-mount package designed for automated assembly processes.
Applications
- Logic level shifting between microcontrollers and peripheral devices
- Driver circuits for small-signal relays or LEDs
- Switching elements in portable electronic equipment
Procurement Notes
Verify the complete ordering part number against the manufacturer's official datasheet to ensure correct suffix alignment. Confirm that the specific batch matches required environmental compliance standards such as RoHS directives before finalizing procurement orders.
Selection Notes
Select this component when a pre-biased NPN solution is required for low-current switching tasks. Ensure the 2.2 kOhm input resistance aligns with the driving source impedance. Verify that the 50 V voltage rating exceeds the maximum circuit operating voltage under all conditions.
Part Context
This component belongs to the DTC123 series of digital transistors from Rohm Semiconductor. The series integrates bipolar junction transistors with internal resistive networks. The SMT3 package designation corresponds to the standard SOT-23-3 footprint commonly used in consumer electronics manufacturing.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official replacement guide for verified cross-references.
