DDTA144EUA-7-F

Overview

The DDTA144EUA-7-F is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction housed in a SOT-323 package. The device integrates built-in biasing resistors with nominal values of R1 = 47 kΩ and R2 = 47 kΩ, resulting in a resistance ratio of 1. Key electrical characteristics include a maximum supply voltage (VCC) of -50 V, a continuous collector current (IC) of -100 mA, and a power dissipation (Pd) of 200 mW. The component operates within a temperature range of -55°C to +150°C and offers a gain-bandwidth product (fT) of 250 MHz.

Feature Summary

• Integrates dual biasing resistors (R1=R2) for simplified circuit design
• Utilizes epitaxial planar die construction for reliability
• Provides high-speed switching capability with a 250 MHz gain-bandwidth product

Applications

• General-purpose digital switching applications
• Interface circuits between logic families
• Driver stages for low-power loads

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm packaging quantity and tape-and-reel specifications. Ensure compliance with RoHS directives and lead-free plating requirements as stated in the datasheet. Confirm moisture sensitivity level and storage conditions prior to assembly to maintain component integrity during the soldering process.

Selection Notes

Select this component when a single PNP transistor with integrated base and emitter resistors is required to reduce board space and external component count. The SOT-323 package is suitable for space-constrained designs. Verify that the -50 V supply voltage rating and -100 mA current capacity meet the specific load requirements of the target application circuit.

Part Context

This part belongs to the DDTA1xxEUA series of pre-biased transistors from Diodes Incorporated. The '144' designation specifically indicates the 47kΩ/47kΩ resistor configuration within the R1=R2 family. Complementary NPN types are available in the DDTC series for push-pull or differential configurations requiring matched performance characteristics.

Replacement Considerations

Direct functional substitutes within the same series include DDTA123EUA, DDTA143EUA, DDTA114EUA, DDTA124EUA, and DDTA115EUA, provided their respective resistor values and output current ratings align with the design requirements.