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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)：4.7 kOhms
- Resistor - Emitter Base (R2)：10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce：30 @ 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 DTC143XKAT146 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 supports a continuous collector current of 100 mA. The device includes an internal base resistor (R1) of 4.7 kOhms and an emitter resistor (R2) of 10 kOhms. Key electrical characteristics include a DC current gain (hFE) of at least 30 at 10 mA and 5 V, a saturation voltage of 300 mV max at specified currents, and a transition frequency of 250 MHz. Power dissipation is rated at 200 mW, housed in an SMT3 (SOT-23-3) surface-mount package.
Feature Summary
- Integrates NPN bipolar junction transistor with dual bias resistors to eliminate external components
- Provides high-speed switching capability with a 250 MHz transition frequency
- Ensures low saturation voltage for efficient power handling in compact designs
Applications
- General-purpose switching circuits requiring integrated biasing
- Inverter logic configurations in consumer electronics
- Driver stages for small-signal applications
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to confirm exact packaging and tape specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement. Ensure the selected variant matches the required lead time and production availability constraints for the intended manufacturing schedule.
Selection Notes
Select this component when a compact NPN solution with fixed 4.7 kOhm input resistance is required. Compare the 200 mW power dissipation limit against thermal constraints. Verify that the 50 V breakdown voltage meets the circuit's peak voltage requirements. Consider the SMT3 package dimensions for PCB layout compatibility.
Part Context
This part belongs to the DTC143 series of digital transistors from Rohm Semiconductor. The series offers various packages and resistor ratios. The DTC143XKAT146 specifically utilizes the SMT3 package and a standard 4.7k/10k resistor ratio configuration common in general-purpose applications.
Replacement Considerations
Direct substitutes may include other DTC143 variants with identical pinouts and electrical parameters but different packaging or resistor values. Verify functional equivalence before substitution.
