DDTC123EKA-7-F

Overview

The DDTC123EKA-7-F is an NPN pre-biased small signal surface mount transistor from Diodes Incorporated, housed in a SC-59 package. It features built-in biasing resistors where R1 equals R2, with a nominal resistance of 2.2 kΩ each. The device supports a supply voltage (VCC) of 50 V and a maximum output current (IO) of 100 mA. Power dissipation is rated at 200 mW, with a thermal resistance (RθJA) of 625 °C/W. The operating and storage temperature range spans from -55 °C to +150 °C. The gain-bandwidth product (fT) is typically 250 MHz.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Integrated biasing network with equal base and emitter resistors
• Lead-free plating with matte tin finish over copper leadframe
• RoHS compliant and manufactured using green molding compound

Applications

• General-purpose switching applications
• Driver circuits for low-power loads
• Logic level translation interfaces

Procurement Notes

Verify the component status as the provided source data indicates this specific part number may be discontinued or obsolete. Confirm availability through authorized distributors or check for direct replacement alternatives within the same series if production continuity is required for manufacturing.

Selection Notes

Select this component when a single NPN digital transistor with matched internal resistors is needed. Ensure the SC-59 package dimensions fit the PCB layout constraints. Verify that the 2.2 kΩ resistor values align with the drive requirements and that the 50 V collector-emitter voltage rating exceeds the circuit's maximum operating voltage.

Part Context

This component belongs to the DDTC123 EKA series, which utilizes the KA suffix to denote the SC-59 package type. The 'EKA' designation specifically identifies the NPN configuration with R1 = R2 = 2.2 kΩ. This series is part of a broader family of pre-biased transistors offering complementary PNP options.

Replacement Considerations

Direct substitutes include other DDTC123 variants with different resistor values but the same SC-59 package, such as DDTC143EKA-7-F or DDTC114EKA-7-F, provided the resistance values match the design requirements.