DTA143ZCA-HF

Overview

The DTA143ZCA-HF is a PNP digital transistor manufactured by Comchip Technology, featuring built-in biasing resistors to simplify circuit design. It operates with a collector-emitter voltage of -50V and a continuous collector current of -100mA. The device incorporates thin-film resistors for complete isolation, allowing negative input biasing while eliminating parasitic effects. Key electrical parameters include an input resistance (R1) of 4.7kΩ and an emitter-base resistance (R2) of 47kΩ. The component is housed in a SOT-23 package with a power dissipation rating of 0.2W.

Feature Summary

• Built-in biasing resistors enable inverter circuit configuration without external input resistors
• Thin-film resistor construction provides complete isolation for negative input biasing
• Eliminates parasitic effects through integrated resistor design
• Simplifies circuit design by requiring only on/off condition settings

Applications

• Inverter circuits
• Interface applications
• Driver circuits

Procurement Notes

Verify the exact ordering suffix against the manufacturer's official documentation to ensure correct packaging and compliance specifications. Confirm RoHS status and lead times directly with authorized distributors or the manufacturer before procurement. Ensure the component meets specific automotive or industrial grade requirements if applicable, as standard versions may differ from qualified variants.

Selection Notes

Select this component when a PNP digital transistor with a 4.7kΩ input resistor and 47kΩ emitter-base resistor is required. The SOT-23 package suits space-constrained surface mount designs. Verify that the -50V voltage rating and -100mA current capacity align with the target application's electrical demands. Consider complementary NPN types like the DTC143ZCA-HF for push-pull configurations.

Part Context

This part belongs to Comchip Technology's line of digital transistors with built-in resistors. These components integrate bipolar junction transistors with precision thin-film resistors to reduce board space and assembly complexity. The DTA143ZCA-HF specifically serves as the PNP counterpart to the DTC143ZCA-HF, offering complementary functionality for various switching and logic applications.

Replacement Considerations

DTA143ZCA is listed as a compatible alternative with identical pinout and package specifications.