DDTA144WE-7

Overview

The DDTA144WE-7 is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction housed in an SOT523 package. The device integrates internal biasing resistors with nominal values of R1 = 47 kΩ and R2 = 22 kΩ, resulting in a resistance ratio of approximately 4.7. Key electrical specifications include a maximum supply voltage (VCC) of -50 V, a continuous collector current (IC) of -100 mA, and a power dissipation (PD) of 150 mW at 25°C. The DC current gain (hFE) has a minimum value of 56 at IC = -10 mA and VCE = -5 V. The transition frequency (fT) is typically 250 MHz. Operating and storage temperature ranges extend from -55°C to +150°C.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Integrated unequal biasing resistors (R1≠R2) simplifying circuit design
• Qualified to AEC-Q101 standards for high reliability applications
• Totally lead-free and fully RoHS compliant with halogen and antimony free green device packaging

Applications

• General purpose switching and amplification in consumer electronics
• Interface circuits requiring level shifting or buffer functions
• Automotive electronic systems meeting AEC-Q101 requirements

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation, as variations such as -7-F may indicate different packaging or compliance markings. Confirm availability status directly with authorized distributors, as production lifecycles can change. Ensure that the procurement channel is authorized to guarantee product authenticity and traceability. Check for any recent Product Change Notices (PCN) regarding material or assembly site updates before placing orders.

Selection Notes

Select this component when a PNP digital transistor with a 47 kΩ base resistor and 22 kΩ emitter resistor is required. The SOT523 package is suitable for space-constrained printed circuit board layouts. Consider the -100 mA collector current limit and 150 mW power dissipation rating during thermal design. Verify input voltage tolerances for specific logic levels, as the DDTA144WE supports input voltages up to -40 V depending on the test condition.

Part Context

The DDTA144WE belongs to the DDTA (R1≠R2 Series) family of pre-biased transistors from Diodes Incorporated. This series offers complementary NPN types under the DDTC designation. The device utilizes a molded plastic case with UL flammability classification 94V-0. It is designed for surface mount technology, facilitating automated assembly processes in modern electronics manufacturing.

Replacement Considerations

Direct functional substitutes within the same series include DDTA144VE (47k/10k) if different resistor ratios are acceptable. For identical resistor values but different packaging, consider DDTA144WCA in SOT-23-3. Always verify pinout compatibility and absolute maximum ratings before substituting components in existing designs.