DDTA115GUA-7-F

Overview

The DDTA115GUA-7-F is a PNP pre-biased small signal surface mount transistor from Diodes Incorporated, featuring an epitaxial planar die construction in a SOT-323 package. It integrates a single internal biasing resistor (R2) with a nominal value of 100 kΩ. Key electrical ratings include a collector-emitter voltage (VCEO) of -50 V, a continuous collector current (IC) of -100 mA, and a power dissipation (Pd) of 200 mW at 25°C ambient temperature. The device exhibits a minimum DC current gain (hFE) of 82 at IC = -5 mA and VCE = -5 V, with a typical gain-bandwidth product (fT) of 250 MHz.

Feature Summary

• Integrates a built-in bleeder biasing resistor (R2 only) to simplify circuit design and reduce component count.
• Utilizes epitaxial planar die construction for reliable performance in surface mount applications.
• Manufactured using lead-free plating and compliant molding compounds to meet environmental standards.

Applications

• General-purpose switching circuits requiring compact footprint solutions.
• Driver stages for logic interfaces where base current limiting is needed.
• Low-power analog signal processing applications within specified voltage limits.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging configuration and shipping quantity. Ensure that the requested part number matches the exact electrical characteristics and pinout defined in the datasheet DS30328. Confirm compliance requirements such as RoHS status and moisture sensitivity level prior to procurement to align with assembly process specifications.

Selection Notes

Select this component when a PNP digital transistor with a 100 kΩ internal pull-up resistor is required in a SOT-323 package. Consider the -50 V collector-emitter voltage rating and -100 mA current capability for appropriate load matching. Evaluate the thermal resistance and power dissipation limits relative to the expected operating ambient temperature and PCB pad layout to ensure safe operation under maximum load conditions.

Part Context

This component belongs to the DDTA series of pre-biased transistors manufactured by Diodes Incorporated. The 'UA' designation indicates the SOT-323 case style, while the '115' code specifies the 100 kΩ internal resistor value. It is part of a family that includes complementary NPN types (DDTC series) and variants with different resistor values or packages, designed for space-constrained electronic designs.

Replacement Considerations

Complementary NPN equivalents are available in the DDTC series, specifically the DDTC115GUA-7-F, which shares identical physical dimensions and similar electrical characteristics for PNP/NPN pairing. Other DDTA series members with different resistor values may serve as functional substitutes if the biasing requirements differ.