DTC124EKAT146

DTC124EKAT146 – NPN Pre-Biased Transistor – ROHM Semiconductor

This DTC124EKAT146 surface-mount transistor from ROHM Semiconductor integrates bias resistors for simplified circuit design. Ideal for space-constrained applications, it delivers reliable switching performance with low saturation voltage. PCX ensures genuine ROHM components with same-day shipping and dedicated technical support.

Key Features

• Transistor Type: Pre-Biased NPN with R1=22kΩ, R2=22kΩ
• Voltage Rating: 50V Collector-Emitter Breakdown
• Current Handling: 30mA Max Collector Current (Ic)
• Gain & Saturation: hFE min 56 @5mA/5V | Vce sat 300mV @500µA/10mA
• High-Speed Switching: 250MHz Transition Frequency
• Package: SMT3 (SC-59, SOT-23-3)

Technical Details

This pre-biased bipolar transistor features ultra-low collector cutoff current (500nA max) and 200mW power dissipation. The integrated base and emitter resistors eliminate external components, reducing board space. Designed for surface-mount assembly in compact TO-236-3 packages, it operates effectively across industrial temperature ranges.

Common Applications

• Load switching in portable electronics
• Interface circuits and I/O buffering
• LED driver modules
• Relay/ solenoid control systems
• Sensor signal amplification

About ROHM Semiconductor

ROHM Semiconductor is a global leader in analog ICs and discrete components, renowned for innovation in power efficiency and miniaturization. With over 60 years of expertise, ROHM maintains rigorous quality certifications including ISO/TS16949 for automotive applications.

The company invests heavily in R&D, consistently delivering high-reliability components for mission-critical systems. ROHM’s vertically integrated manufacturing ensures strict process control and traceability, making their transistors preferred solutions in medical, industrial, and consumer markets worldwide.

About Pre-Biased Bipolar Transistors

Pre-biased transistors incorporate built-in resistor networks to simplify circuit board design and reduce component count. These devices eliminate the need for external biasing components while providing stable switching characteristics.

Essential for modern electronics miniaturization, they offer optimized performance in digital logic interfaces, driver stages, and power management circuits. Their space-saving design and simplified implementation make them ideal for high-density PCB layouts in consumer gadgets, IoT devices, and automation controls.

Packaging Options

Available in Tape & Reel (TR), Cut Tape (CT), and Digi-Reel® formats for automated assembly compatibility. Specify packaging preference at checkout.

FAQs

Q: What does “pre-biased” mean in this transistor?
A: It includes integrated 22kΩ base and emitter resistors, eliminating external biasing components.

Q: Can this replace standard NPN transistors?
A: Only in circuits designed for pre-biased devices – verify schematic compatibility using the datasheet.

Q: What’s the maximum switching frequency?
A: 250MHz transition frequency enables high-speed digital switching applications.

Q: Is this suitable for 3.3V logic systems?
A: Yes, its 5V Vce saturation testing confirms compatibility with 3.3V/5V interfaces.

Q: How does PCX ensure component authenticity?
A: We source exclusively from authorized channels and provide full traceability documentation.

Q: What thermal considerations apply?
A: Use standard SMD reflow profiles – maximum junction temperature is 150°C per datasheet.

Note: Product image is representational. Refer to datasheet for exact specifications. Download datasheet

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