DDTD123YC-7-F

Overview

The DDTD123YC-7-F is an NPN pre-biased surface-mount transistor manufactured by Diodes Incorporated. It features built-in biasing resistors with nominal values of R1 = 2.2 kΩ and R2 = 10 kΩ. The device operates within a supply voltage range up to 50 V and supports a continuous collector current of 500 mA. Power dissipation reaches 250 mW at +25°C, with a thermal resistance (junction-to-ambient) of 500 °C/W. The component is housed in an SOT-23 package, weighs approximately 0.008 grams, and functions reliably across a temperature range of -55°C to +150°C.

Feature Summary

• Epitaxial planar die construction for robust performance
• Integrated biasing resistors simplify circuit design
• Totally lead-free and fully RoHS compliant
• Halogen and antimony free "Green" device

Applications

• Switching applications requiring integrated base drive
• Driver circuits for low-power loads
• General-purpose digital logic interfacing

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging details and availability status. Confirm compliance requirements such as RoHS and halogen-free specifications match project needs. Check for automotive qualification if AEC-Q100 standards are required. Ensure the correct marking code (N66) matches physical inventory during receiving inspection.

Selection Notes

Select this component when an NPN configuration with 2.2 kΩ input and 10 kΩ output resistor is required. Compare against complementary PNP types like DDTB123YC-7-F for push-pull designs. Evaluate thermal derating curves for high ambient temperatures. Verify that the 500 mA current rating meets peak load demands without exceeding saturation limits.

Part Context

This part belongs to the DDTD(XXXX)C series of NPN pre-biased transistors from Diodes Incorporated. It shares the SOT-23 mechanical footprint with other variants in the family, distinguished primarily by internal resistor ratios and polarity. The series offers various combinations of R1 and R2 values to accommodate different drive requirements while maintaining standardized packaging.

Replacement Considerations

Direct substitutes include other DDTD123YC-7-F units from authorized channels. Complementary PNP equivalents in the same package are available within the DDTB series.