DDTB143EU-7-F

Overview

The DDTB143EU-7-F is a PNP pre-biased transistor manufactured by Diodes Incorporated, housed in an SOT-323 surface-mount package. It integrates two built-in biasing resistors with nominal values of 4.7 kΩ each. The device features an epitaxial planar die construction and supports a maximum collector-emitter voltage (VCEO) of -50 V and a continuous collector current of -500 mA. Electrical characteristics include a minimum DC current gain (hFE) of 47 at IC = -5 mA and a typical gain-bandwidth product (fT) of 200 MHz. Power dissipation is rated at 200 mW, with an operating temperature range spanning from -55°C to +150°C.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Integrated dual biasing resistors simplify circuit design
• Surface mount package optimized for automated assembly processes
• Compliant with RoHS standards and free from halogen and antimony

Applications

• General-purpose switching applications
• Driver circuits for low-power loads
• Logic level translation interfaces

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm compliance status and packaging details. Confirm that the component meets all relevant environmental directives required for the target application before finalizing procurement specifications.

Selection Notes

Select this component when a PNP configuration with integrated biasing is required in a compact SOT-323 footprint. Ensure the design accounts for the -500 mA maximum collector current and verify that the thermal resistance allows for adequate heat dissipation within the specified operating temperature range.

Part Context

This part belongs to the DDTB series of PNP pre-biased transistors offered by Diodes Incorporated. The series provides various resistor combinations to accommodate different logic drive requirements while maintaining a consistent small-outline package form factor for space-constrained designs.

Replacement Considerations

Consult the official datasheet for alternative part numbers within the same series that offer different resistor ratios or configurations.