DDTC143TKA-7-F

Overview

The DDTC143TKA-7-F is an NPN pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features epitaxial planar die construction and a built-in biasing resistor (R1) with a nominal value of 4.7 kΩ. The device operates within a collector-emitter voltage range of up to 50 V and supports a maximum continuous collector current of 100 mA, with a power dissipation rating of 200 mW at 25°C ambient temperature. Packaged in the SC-59 case, it offers a DC current transfer ratio (hFE) ranging from 100 to 600 and a gain-bandwidth product of 250 MHz.

Feature Summary

• Integrates a single built-in biasing resistor for simplified circuit design
• Utilizes epitaxial planar die construction for reliable performance
• Compliant with RoHS standards and lead-free plating requirements

Applications

• Switching applications requiring integrated base drive components
• Driver circuits for logic interfaces
• General-purpose amplification stages

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm that the ordering suffix matches the required tape and reel packaging format. Ensure compliance with environmental directives such as RoHS and REACH before integration into final assemblies.

Selection Notes

Select this component when a compact NPN solution with a fixed 4.7 kΩ input resistor is required. Consider the SC-59 package dimensions for board space constraints. Evaluate thermal resistance characteristics against the specific application's heat dissipation needs.

Part Context

This part belongs to the DDTC R1-only series of pre-biased transistors. It serves as a discrete alternative to complex driver circuits, offering a compact footprint suitable for high-density PCB layouts while maintaining standard bipolar junction transistor electrical characteristics.

Replacement Considerations

Check datasheet specifications for compatible substitutes. Verify pinout compatibility and electrical parameter alignment, specifically collector-emitter voltage and current ratings, before implementing any cross-brand replacements.