DDTA142TU-7

Overview

The DDTA142TU-7-F is a PNP pre-biased transistor from Diodes Incorporated, housed in an SOT-323 package. It integrates a single NPN transistor with built-in biasing resistors: R1 (nominal 0.47 kΩ) and R2 (nominal 10 kΩ). The device features a collector-emitter breakdown voltage of -40 V and a continuous collector current of -100 mA. Maximum power dissipation is rated at 200 mW, with an operating temperature range spanning from -55°C to +150°C. The component utilizes epitaxial planar die construction and complies with RoHS standards.

Feature Summary

• Integrates a PNP transistor with dual internal biasing resistors for simplified circuit design
• Utilizes epitaxial planar die construction for reliable performance
• Encapsulated in a compact SOT-323 surface-mount case

Applications

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

Procurement Notes

This specific part number is officially marked as obsolete and discontinued by the manufacturer. Verification of availability should focus on surplus or secondary market channels rather than direct distribution. Engineering teams must confirm end-of-life status and transition timelines before finalizing designs that rely on this component.

Selection Notes

Designers should evaluate alternative components within the DDTA series or complementary families due to the discontinuation status. Selection criteria must account for equivalent electrical parameters, specifically the -40V breakdown voltage and 0.47kΩ input resistance, while ensuring the replacement supports the required SOT-323 footprint and thermal characteristics.

Part Context

The DDTA142TU-7-F belongs to the DDTA series of pre-biased transistors manufactured by Diodes Incorporated. This series combines discrete transistors with integrated base resistors to reduce external component count. The TU suffix indicates a PNP configuration with specific resistor values, distinguishing it from other variants like the LU or JU series which may feature different polarities or resistance ratios.

Replacement Considerations

Direct substitutes include DDTA142JU-7-F and DDTA122TU-7-F from the same manufacturer. Verify pinout compatibility and electrical ratings when transitioning between these variants.