DDTC113ZKA-7-F

Overview

The DDTC113ZKA-7-F is a single NPN digital transistor manufactured by Diodes Incorporated, designed for surface-mount applications in the SOT-23-3 package. It integrates an NPN bipolar junction transistor with internal biasing resistors to simplify circuit design and reduce component count. Key electrical specifications include a maximum collector-emitter voltage of 50 V and a continuous collector current of 100 mA. The device features a typical base resistor (R1) of 1 kOhm and an emitter resistor (R2) of 47 kOhms, resulting in a typical resistance ratio of approximately 0.1. It offers a minimum DC current gain (hFE) of 33 at 10 mA and 5 V, with a power dissipation rating of 200 mW and an operating temperature range from -55°C to +150°C.

Feature Summary

• Integrates NPN transistor with built-in biasing resistors to minimize external components and PCB space.
• Optimized for high-speed switching applications with low saturation voltage characteristics.
• Designed for robust performance across a wide industrial temperature range.

Applications

• General-purpose switching circuits in consumer electronics.
• Driver stages for relays, solenoids, and small motors.
• Logic level shifting and buffer interfaces in digital systems.

Procurement Notes

Verify the specific suffix 'KA' against the manufacturer's official datasheet or latest product change notices, as standard variants often use 'CA'. Confirm RoHS compliance status directly with Diodes Incorporated documentation, as regulatory status can vary by manufacturing site and date code. Ensure the SOT-23-3 footprint matches the target PCB layout requirements before finalizing procurement.

Selection Notes

Select this component when a compact NPN switch with fixed biasing is required. The 1 kOhm base resistor suits moderate drive currents, while the 47 kOhm emitter resistor provides stability. Compare hFE and Vce(sat) parameters against load requirements. Ensure the 200 mW power dissipation limit accommodates the thermal conditions of the application environment.

Part Context

This part belongs to the DDTC1x3 series of pre-biased transistors from Diodes Incorporated. The series typically includes NPN variants with different resistor ratios. The 'DDTC' prefix denotes a single NPN pre-biased transistor, while the numeric codes indicate specific resistor values. This family is widely used in portable devices due to its small footprint and integrated functionality.

Replacement Considerations

Direct substitutes within the same manufacturer line may include DDTC113ZCA-7-F if the resistor configuration matches. Cross-manufacturer equivalents such as those from onsemi or Rohm should be verified for pin compatibility and electrical parameter alignment, particularly hFE and Vceo ratings.