DDTA123JKA-7-F

Overview

The DDTA123JKA-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 internal biasing resistors with nominal values of R1 = 2.2 kΩ and R2 = 47 kΩ. The device operates within a supply voltage range up to -50 V and supports a continuous collector current of -100 mA. It provides a minimum DC current gain (hFE) of -80 and maintains a power dissipation rating of 200 mW. The component is housed in an SC-59 package, suitable for automated assembly via tape and reel.

Feature Summary

• Integrates two distinct biasing resistors (R1≠R2) to simplify circuit design and reduce board space requirements.
• Utilizes epitaxial planar die construction for reliable performance in surface mount applications.
• Offers complementary NPN types available within the same series for balanced design options.

Applications

• General-purpose switching circuits requiring integrated base drive components.
• Driver stages for logic interfaces where simplified biasing networks are preferred.
• Low-power analog amplification or buffering applications within specified thermal limits.

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm packaging details and compliance status. Ensure that the SC-59 package dimensions align with the target PCB footprint layout. Confirm RoHS compliance and lead-free plating specifications if environmental regulations apply to the final assembly process.

Selection Notes

Select this component when a PNP configuration with unequal biasing resistors is required. The 2.2 kΩ input resistor and 47 kΩ feedback resistor ratio suit applications needing specific input impedance characteristics. Consider the SC-59 package size constraints and the -50 V maximum voltage rating during the initial schematic capture phase.

Part Context

This part belongs to the DDTA123 series of pre-biased transistors from Diodes Incorporated. It serves as the PNP counterpart to the DDTC123 series. The 'KA' designation specifically identifies the SC-59 package style and the unique resistor ratio combination defined in the product table.

Replacement Considerations

Direct substitutes include other DDTA123 variants with identical resistor ratios but different packages, such as DDTA123JCA-7-F (SOT-23). Verify pinout compatibility and thermal resistance differences before implementing any cross-package replacements.