DDTA142TE-7-F

Overview

The DDTA142TE-7-F is a PNP pre-biased surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction housed in a SOT-523 package. The device integrates a single built-in biasing resistor (R1) with a nominal value of 0.47 kΩ, while the second resistor (R2) remains open. Key electrical specifications include a maximum collector-emitter voltage (BVCEO) of -40 V and a continuous collector current of -100 mA. Power dissipation is rated at 150 mW, with an operating temperature range spanning from -55°C to +150°C.

Feature Summary

• Integrates a single internal base biasing resistor to simplify circuit design and reduce component count.
• Utilizes epitaxial planar die construction for reliable performance in surface mount applications.
• Offers a compact SOT-523 footprint suitable for space-constrained PCB layouts.

Applications

• General-purpose switching circuits requiring integrated biasing.
• Driver stages for low-current loads in consumer electronics.
• Logic interface buffers between microcontrollers and peripheral devices.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct pinout and resistance values. Confirm that the SOT-523 package dimensions align with your PCB footprint requirements. Check for any recent Product Change Notices regarding manufacturing site or material updates before finalizing procurement plans.

Selection Notes

Select this component when a PNP digital transistor with a low nominal input resistance of 0.47 kΩ is required. Ensure the application voltage does not exceed the -40 V collector-emitter breakdown limit. Consider the thermal resistance characteristics if high power dissipation near the maximum rating is anticipated in the design.

Part Context

This part belongs to the DDTA series of pre-biased transistors from Diodes Incorporated. It serves as the PNP counterpart to the DDTC NPN series. The 'TE' designation indicates the inclusion of only the first biasing resistor (R1), distinguishing it from variants that include both R1 and R2.

Replacement Considerations

Direct replacements within the same family include DDTA122TE-7-F, which shares the same package but features a different nominal resistance value of 0.22 kΩ. Verify that the alternative part meets the specific circuit impedance requirements before substitution.