DDTA113ZCA-7

Overview

The DDTA113ZCA-7 is a PNP pre-biased transistor from Diodes Incorporated, housed in an SOT-23 surface-mount package. It integrates internal biasing resistors with values of R1 = 1 kΩ and R2 = 10 kΩ. The device features a supply voltage (VCC) rating of -50 V and a maximum output current (Iout) of -100 mA. Electrical characteristics include a DC current gain (Gl) of 33 at -10 mA and a transition frequency (fT) of 250 MHz. Thermal performance specifies a power dissipation (PD) of 200 mW and a junction-to-ambient thermal resistance (RθJA) of 625 °C/W. Operating and storage temperatures range from -55°C to +150°C.

Feature Summary

• Epitaxial planar die construction for reliable operation
• Integrated unequal biasing resistors (R1≠R2) simplifying circuit design
• Surface-mount SOT-23 package optimized for automated assembly
• Fully RoHS compliant and halogen/antimony-free green device

Applications

• General-purpose switching applications
• Driver circuits for logic interfaces
• Automotive electronics requiring specific change control

Procurement Notes

Verify the exact ordering suffix against official documentation, as variations such as '-7' or '-7-F' may indicate different packaging quantities or reel specifications. Confirm compliance requirements including RoHS and REACH status directly with the manufacturer or authorized distributors before procurement. Ensure the selected variant matches the required tape width and carrier type for your assembly line equipment.

Selection Notes

Select this component when a compact PNP solution with fixed base and emitter resistors is required. The 1 kΩ input resistor (R1) and 10 kΩ emitter resistor (R2) provide a specific gain profile suitable for standard logic levels. Consider the -50 V collector-emitter voltage and -100 mA current limits to ensure adequate headroom for the target application's electrical demands.

Part Context

This part belongs to the DDTA (R1≠R2 Series) CA family of 50V PNP pre-biased transistors. It serves as the complementary counterpart to the DDTC NPN series. The 'CA' designation indicates the specific resistor ratio configuration and package type. Other variants in this series offer different resistor combinations to tailor input impedance and gain characteristics for diverse circuit requirements.

Replacement Considerations

Direct substitutes include other DDTA113ZCA variants from Diodes Incorporated with identical electrical parameters but potentially different packaging suffixes. Cross-manufacturer replacements must match the PNP polarity, SOT-23 footprint, 50V rating, and integrated 1kΩ/10kΩ resistor network to ensure functional compatibility without redesigning the surrounding biasing components.