DDTA144EKA-7-F

Overview

The DDTA144EKA-7-F is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction and includes built-in biasing resistors where R1 equals R2, with a nominal resistance of 47 kOhms. The device is housed in an SC-59 (SOT-23) package. Key electrical parameters include a maximum supply voltage of -50 V, a continuous collector current of -100 mA, and a power dissipation rating of 200 mW. The DC current gain (hFE) has a minimum value of 68 at a collector current of -5 mA. The component operates within a temperature range of -55°C to +150°C.

Feature Summary

• Integrates built-in biasing resistors with equal values for simplified circuit design
• Utilizes epitaxial planar die construction for reliable performance
• Complements NPN types available in the DDTC series

Applications

• General-purpose switching applications
• Driver circuits for low-current loads
• Logic interface buffering

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm packaging and compliance details. Ensure that the SC-59 package dimensions align with the target PCB footprint requirements. Confirm RoHS compliance status for the specific production batch if required by assembly standards.

Selection Notes

Select this component when a PNP configuration with integrated biasing is required. The 47 kOhm resistor ratio suits applications needing moderate base drive currents. Consider the thermal resistance and power dissipation limits relative to the ambient operating conditions and board layout constraints.

Part Context

This part belongs to the DDTA144 series from Diodes Incorporated, which consists of PNP pre-biased transistors with identical internal resistor values. The 'KA' designation indicates the SC-59 surface mount package. It serves as a discrete solution replacing external resistor networks in digital logic interfaces.

Replacement Considerations

DDTA144ECA-7-F