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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 50V UMT3F
- Series：-
- 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)：4.7 kOhms
- Resistor - Emitter Base (R2)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：100 @ 5mA, 10V
- Vce Saturation (Max) @ Ib, Ic：150mV @ 500µA, 5mA
- Current - Collector Cutoff (Max)：500nA (ICBO)
- Frequency - Transition：250 MHz
- Power - Max：200 mW
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：SC-85
- Supplier Device Package：UMT3F
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Overview
The DTC043TUBTL is an NPN digital transistor manufactured by ROHM Semiconductor, featuring built-in bias resistors to simplify circuit design. It operates with a collector-emitter voltage (VCEO) of 50 V and supports a continuous collector current of 100 mA. The device incorporates a base resistor (R1) of 10 kOhms and an emitter resistor (R2) of 4.7 kOhms, yielding a typical resistance ratio of approximately 2.13. Packaged in the compact SOT-323FL (UMT3F) surface-mount format, it offers a maximum power dissipation of 200 mW and a transition frequency of 250 MHz. The component functions reliably within an operating temperature range of -55°C to +150°C.
Feature Summary
- Integrates dual bias resistors to eliminate external components and reduce board space.
- Provides high-density surface-mount packaging for automated assembly efficiency.
- Ensures stable switching performance through standardized DC current gain characteristics.
Applications
- General-purpose logic level shifting and interface circuits.
- Driver stages for small-signal relays and LEDs.
- Switching applications in portable consumer electronics.
Procurement Notes
Verify the specific suffix against official ROHM documentation to confirm package type and tape/reel specifications. Ensure compatibility with RoHS directives and check for any automotive qualification requirements if intended for vehicle-mounted systems. Confirm availability of EDA models for schematic capture and PCB layout integration prior to procurement.
Selection Notes
Select this component when a compact NPN switch with integrated biasing is required. Compare the 10 kOhm base resistance against other series variants like DTC043TEBTL if different input impedance is needed. Verify that the 50 V rating exceeds the maximum load voltage in the target application to prevent breakdown.
Part Context
This part belongs to the DTC043 series of digital transistors from ROHM Semiconductor. The series includes various configurations with different resistor values and packages. The TUBTL suffix specifically denotes the SOT-323FL package variant with tape and reel packaging, distinguishing it from bulk or cut-tape options.
Replacement Considerations
Direct substitutes include DTC043TEBTL and DTC043EUBTL, though package differences must be accounted for. Verify pinout compatibility and electrical parameters before swapping. Generic equivalents may lack the precise resistor ratios defined by ROHM.
