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Product Detailed Parameters
- Description：TRANS PREBIAS PNP 0.5A SMT3
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Resistors Included：R1 and R2
- Transistor Type：PNP - Pre-Biased
- Current - Collector (Ic) (Max)：500 mA
- Voltage - Collector Emitter Breakdown (Max)：-
- Resistor - Base (R1)：2.2 kOhms
- Resistor - Emitter Base (R2)：2.2 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce：39 @ 50mA, 5V
- Vce Saturation (Max) @ Ib, Ic：300mV @ 2.5mA, 50mA
- Current - Collector Cutoff (Max)：-
- Frequency - Transition：200 MHz
- Power - Max：200 mW
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SMT3
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Overview
The DTB123EKFRAT146 is a PNP digital transistor with built-in bias resistors, manufactured by Rohm Semiconductor. It features a maximum collector current of 500 mA and a transition frequency of 200 MHz. The device operates with a maximum power dissipation of 200 mW and includes internal resistors R1 and R2, both valued at 2.2 kOhms. The saturation voltage is specified at 300 mV under conditions of 2.5 mA base current and 50 mA collector current. DC current gain (hFE) has a minimum value of 39 at 50 mA collector current and 5 V collector-emitter voltage. It is housed in an SMT3 package, equivalent to TO-236-3 or SC-59.
Feature Summary
- Integrates PNP bipolar junction transistor with dual bias resistors for simplified circuit design
- Automotive grade qualification compliant with AEC-Q101 standards
- Surface mount construction in compact three-terminal package
Applications
- Automotive electronic circuits requiring pre-biased switching elements
- Interface driver applications eliminating external resistor networks
- Logic level translation and signal inversion stages
Procurement Notes
Verify component authenticity through authorized distribution channels. Confirm AEC-Q101 automotive qualification status matches project requirements. Check datasheet revisions for parameter updates. Ensure storage conditions comply with moisture sensitivity levels. Validate marking codes against official Rohm specifications.
Selection Notes
Compare internal resistance values against target input impedance requirements. Evaluate thermal performance within the 200 mW power dissipation limit. Assess package compatibility with existing PCB footprint constraints. Verify polarity configuration matches circuit topology needs.
Part Context
This component belongs to the DTB123 series of pre-biased transistors from Rohm Semiconductor. The series offers integrated resistor networks to reduce board space and assembly complexity. The FRAT146 suffix indicates specific taping and packaging configurations for automated surface mount processing.
Replacement Considerations
DTB123EC serves as a functional alternative within the same series family. Both parts share identical electrical characteristics and pinout configurations. Verify package dimensions and marking codes before substitution.
