DDTC124TKA-7-F

Overview

The DDTC124TKA-7-F is an NPN pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features epitaxial planar die construction and includes a built-in biasing resistor R1 with a nominal value of 22 kΩ. The device operates within a collector-emitter voltage range of up to 50 V and supports a continuous collector current of 100 mA, with a maximum power dissipation of 200 mW. Packaged in the SC-59 case, it offers a DC current transfer ratio (hFE) ranging from 100 to 600 at IC = 1mA and VCE = 5V. The component functions reliably across an operating temperature range of -55°C to +150°C.

Feature Summary

• Integrates a single built-in biasing resistor (R1 only) for simplified circuit design
• Utilizes epitaxial planar die construction for robust performance
• Complies with RoHS standards and utilizes green molding compound

Applications

• General-purpose switching applications
• Driver circuits requiring integrated base biasing
• Low-power digital logic interfacing

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm packaging details and shipping quantities. Ensure that the SC-59 package dimensions align with the target PCB footprint requirements. Confirm compliance with relevant environmental directives such as RoHS and REACH before finalizing procurement specifications.

Selection Notes

Select this component when a compact NPN solution with integrated base resistance is required. The SC-59 package provides a space-efficient alternative to larger transistor packages. Consider the 22 kΩ internal resistor value for appropriate base drive calculations. Verify thermal management needs against the specified junction-to-ambient thermal resistance for the intended application environment.

Part Context

This part belongs to the DDTC (R1-only series) KA family from Diodes Incorporated. It serves as the NPN counterpart to the DDTA PNP types available in the same series. The 'KA' designation indicates the specific SC-59 surface mount package configuration used for these pre-biased transistors.

Replacement Considerations

Direct replacements include other DDTC124 variants with different package styles or resistor values. Cross-brand equivalents may be considered if pin compatibility and electrical ratings match the original specifications.