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Product Detailed Parameters
- Description：TRANS PREBIAS PNP 40V 0.5A SMT3
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Resistors Included：R1 Only
- Transistor Type：PNP - Pre-Biased
- Current - Collector (Ic) (Max)：500 mA
- Voltage - Collector Emitter Breakdown (Max)：40 V
- Resistor - Base (R1)：2.2 kOhms
- Resistor - Emitter Base (R2)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：100 @ 50mA, 5V
- Vce Saturation (Max) @ Ib, Ic：300mV @ 2.5mA, 50mA
- Current - Collector Cutoff (Max)：500nA (ICBO)
- Frequency - Transition：200 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 DTB123TKT146 is a PNP digital transistor from ROHM Semiconductor, featuring built-in biasing resistors to simplify circuit design. It operates with a collector-emitter voltage of -50V and a continuous collector current of -500mA. The device utilizes an SMT3 (SOT-23) surface-mount package, suitable for compact applications. Key electrical parameters include a power dissipation of 200mW, a maximum operating temperature of +150°C, and a transition frequency of 200MHz. Typical input resistance values are 1kΩ or 2.2kΩ.
Feature Summary
- Integrates biasing resistors internally to eliminate external resistor requirements for inverter circuits.
- Provides high reliability suitable for interface and driver applications.
- Features a compact SMT3 surface-mount package for space-constrained designs.
Applications
- Inverter circuits
- Interface circuits
- Driver circuits
Procurement Notes
Verify the specific suffix T116 against the official datasheet to confirm the exact tape-and-reel quantity and packaging configuration. Ensure the component meets RoHS compliance requirements for the target assembly process. Confirm that the standard-grade classification aligns with the application's environmental and operational standards before procurement.
Selection Notes
Select this PNP variant when a negative supply rail or PNP logic inversion is required. Compare the -50V VCEO rating against the system's maximum voltage spikes. Verify that the 200mW power dissipation capability is sufficient for the expected load current and ambient temperature conditions without exceeding thermal limits.
Part Context
This component belongs to the DTB series of digital transistors manufactured by ROHM Semiconductor. The series is characterized by integrated biasing networks within a small footprint. The DTB123TKT146 specifically denotes the PNP polarity version with the T116 packaging suffix, distinguishing it from NPN counterparts like the DTD series.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Cross-reference with other PNP digital transistors having similar -50V ratings and SOT-23 packages if substitution is necessary.
