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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 50V 0.1A SMT3
- Series：DTC115T
- 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)：100 kOhms
- Resistor - Emitter Base (R2)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic：300mV @ 100µA, 1mA
- 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 DTC115TKAT146 is a single NPN digital transistor manufactured by ROHM Semiconductor, designed for surface-mount applications. It integrates bias resistors within the package to simplify circuit design. The device features a collector-emitter voltage (VCEO) of 50 V and a continuous collector current of 100 mA. Power dissipation is rated at 200 mW. The typical input resistance (R1) is 2 kΩ, with an emitter-base resistance (R2) of 470 Ω. The DC current gain (hFE) ranges from 100 to 600. It is housed in a compact SOT-346 (TO-236) package with three terminals.
Feature Summary
- Integrates built-in bias resistors to eliminate external components and reduce board space.
- Simplifies circuit design by requiring only on/off condition settings for operation.
- Provides high current gain suitable for switching and inverter applications.
Applications
- Inverter circuits
- Switching applications
- Driver circuits
Procurement Notes
Verify the specific suffix T146 against official datasheets to confirm reel packaging and tape specifications. Ensure compatibility with standard SMT reflow profiles. Confirm RoHS compliance status through manufacturer documentation before integration into regulated assemblies.
Selection Notes
Select this component when a single NPN digital transistor with moderate current drive and high gain is required. The integrated resistor ratio differs from standard R1=R2 configurations; verify the 2k/470ohm values match the target logic interface requirements. Consider thermal management if operating near the 200 mW dissipation limit.
Part Context
This part belongs to the DTC115T series of digital transistors from ROHM. It shares the SOT-346 package form factor with other variants like DTC115EK but differs in internal resistor values and hFE range. It is distinct from the DTC114 or DTC125 series which offer different resistance ratios or gain characteristics.
Replacement Considerations
Direct pin-compatible substitutes may include other ROHM parts in the SOT-346 package with similar VCEO and IC ratings, such as DTC114WKAT146, though resistor values and hFE ranges will differ. Verify functional equivalence carefully.
