DDTA124EUA-7-F

Overview

The DDTA124EUA-7-F is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features built-in biasing resistors with nominal values of R1 = 22 kΩ and R2 = 22 kΩ, resulting in a resistance ratio of 1. The device is housed in an SOT-323 package and supports a supply voltage (VCC) of -50 V. It operates within a temperature range of -55°C to +150°C. Key electrical parameters include a maximum collector current of -100 mA, power dissipation of 200 mW, and a minimum DC current gain (hFE) of -56 at IO = -5 mA. The transition frequency (fT) is typically 250 MHz.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Integrated biasing resistors simplify circuit design
• RoHS compliant and lead-free manufacturing

Applications

• General-purpose switching applications
• Driver circuits for low-power loads
• Logic level translation interfaces

Procurement Notes

Verify the component authenticity through official Diodes Incorporated channels or authorized distributors. Confirm the marking code 'P17' on the SOT-323 package matches the datasheet specifications. Ensure the ordering suffix '-7-F' corresponds to the 3000-unit tape and reel packaging format required for your assembly line.

Selection Notes

Select this component when a PNP digital transistor with equal base and emitter resistors is required. The 22 kΩ resistor values provide a specific input impedance suitable for standard logic outputs. Consider the -50 V supply rating and -100 mA current capability against your load requirements. Verify thermal constraints given the 200 mW power dissipation limit in the SOT-323 package.

Part Context

This part belongs to the DDTA1xxEUA series from Diodes Incorporated, which includes various resistor combinations for PNP pre-biased transistors. The 'EUA' suffix indicates the SOT-323 package type. Other variants in this series offer different resistor values such as 2.2 kΩ, 4.7 kΩ, 10 kΩ, 47 kΩ, and 100 kΩ to accommodate diverse biasing needs.

Replacement Considerations

Complementary NPN types are available in the DDTC series. Specific equivalent part numbers are not explicitly listed in the provided documentation; verify pin compatibility and electrical ratings before substituting with other manufacturers' digital transistors.