DDTA124XUA-7-F

Overview

The DDTA124XUA-7-F is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction in a SOT-323 package. The device integrates built-in biasing resistors with nominal values of R1 = 22 kΩ and R2 = 47 kΩ, resulting in a resistance ratio of approximately 0.468. Key electrical ratings include a supply voltage (VCC) of -50 V, a continuous collector current (IC) of -100 mA, and power dissipation (Pd) of 200 mW. The DC current gain (hFE) has a minimum value of 68. The component operates within a temperature range of -55°C to +150°C.

Feature Summary

• Integrates two distinct biasing resistors (R1 ≠ R2) for simplified circuit design
• Utilizes epitaxial planar die construction for reliable performance
• Available in a compact SOT-323 surface-mount case

Applications

• General-purpose switching applications
• Driver circuits requiring integrated base biasing
• Logic interface circuits

Procurement Notes

Verify the specific ordering suffix '-7-F' against official documentation to confirm packaging details, such as tape and reel quantities. Confirm RoHS compliance status and manufacturing date codes relevant to the 'Green' molding compound policy if environmental specifications are critical for the intended application.

Selection Notes

Select this component when a PNP configuration with unequal internal biasing resistors (22k/47k) is required. Ensure the -50V supply voltage rating and -100mA current capacity meet the circuit demands. Consider the complementary NPN type (DDTC124XUA-7-F) if an NPN equivalent is needed.

Part Context

This part belongs to the DDTA124 series of pre-biased transistors from Diodes Incorporated. It is specifically designed for applications where discrete biasing resistors would otherwise be necessary, reducing board space and assembly complexity. The 'UA' suffix indicates the SOT-323 package style.

Replacement Considerations

The DTA124XUA is listed as a similar level replacement with the same pinout and package, though it is marked as not recommended for new designs.