DDTA115EUA-7

Overview

The DDTA115EUA-7-F is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction and integrates built-in biasing resistors with nominal values of R1 = 100 kΩ and R2 = 100 kΩ. The device operates within a supply voltage range up to -50 V and supports a maximum collector current of -100 mA. Electrical characteristics include a DC current gain (hFE) minimum of -82 at -5V and -5mA, and a transition frequency (fT) of 250 MHz. Power dissipation is rated at 200 mW with a thermal resistance of 625 °C/W. It is housed in a compact SOT-323 package.

Feature Summary

• Integrates dual biasing resistors (R1=R2) for simplified circuit design
• Utilizes epitaxial planar die construction for reliability
• Operates across a wide temperature range from -55°C to +150°C

Applications

• Switching applications requiring integrated base drive
• Driver circuits for logic interfaces
• General-purpose amplification stages

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging details. The standard tape and reel quantity is 3000 units. Confirm RoHS compliance status and date code requirements prior to procurement to ensure alignment with project specifications and manufacturing timelines.

Selection Notes

Select this component when a PNP configuration with equal internal biasing resistors is required. Ensure the application voltage does not exceed the -50 V limit. Verify that the 100 kΩ resistor values provide appropriate base current for the intended load conditions without exceeding the maximum power dissipation rating.

Part Context

This part belongs to the DDTA1xxEUA series, which includes various resistor combinations. The '115' designation specifically indicates the 100 kΩ / 100 kΩ resistor ratio. It serves as the PNP counterpart to the DDTC115EUA NPN type within the same product family.

Replacement Considerations

Direct substitutes must match the PNP polarity, SOT-323 package, and 100k/100k resistor configuration. Verify pinout compatibility and electrical parameters such as VCEO and IC before substitution.