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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)：47 kOhms
- Resistor - Emitter Base (R2)：47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce：68 @ 5mA, 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 DTC144EKAT146 is a single NPN digital transistor manufactured by ROHM Semiconductor, housed in an SMT3 (SOT-346) surface-mount package. It integrates bias resistors with a typical input resistance of 47 kOhms and a resistor ratio of 1. Key electrical parameters include a collector-emitter voltage of 50 V, continuous collector current of 100 mA, and power dissipation of 200 mW. The device features a minimum DC current gain of 68 at 5 mA and 5 V, a transition frequency of 250 MHz, and operates up to +150°C.
Feature Summary
- Integrates built-in bias resistors to eliminate external components for inverter circuit configurations.
- Provides high-speed switching capabilities suitable for signal processing applications.
- Offers compact surface-mount packaging for efficient board space utilization.
Applications
- Signal inversion circuits
- Driver circuits for logic interfaces
- Switching applications in consumer electronics
Procurement Notes
Verify the specific suffix AT146 against the official datasheet to confirm tape-and-reel specifications and marking codes. Ensure compatibility with RoHS directives if required by the target market. Confirm that the component is not designated for automotive use unless explicitly stated in the latest manufacturer documentation.
Selection Notes
Select this component when a pre-biased NPN transistor with 47 kOhm input resistance is required. Compare the 250 MHz transition frequency and 100 mA current rating against application demands. Consider the SOT-346 footprint constraints and thermal dissipation limits relative to the PCB layout.
Part Context
This part belongs to the DTC144EKA series of digital transistors from ROHM. It shares the same internal configuration as other variants in the family but differs in packaging and taping specifications defined by the AT146 suffix. It serves as a standard solution for replacing discrete resistor-transistor networks.
Replacement Considerations
Direct substitutes within the same series include DTC144ECA or DTC144EKAT116, provided the package and taping requirements match. Verify pinout compatibility and electrical parameters before substitution.
