DDTC124XUA-7-F

Overview

The DDTC124XUA-7-F is an NPN pre-biased small signal transistor manufactured by Diodes Incorporated, housed in a surface-mount SOT323 package. It integrates biasing resistors with nominal values of R1 = 22 kΩ and R2 = 47 kΩ. The device supports a maximum supply voltage (VCC) of 50 V and a continuous collector current (IC) of 100 mA. Key electrical characteristics include a DC current gain (hFE) of at least 68 at 5 mA output current, a transition frequency (fT) of 250 MHz, and a maximum power dissipation of 200 mW. It operates within a temperature range of -55°C to +150°C.

Feature Summary

• Integrates built-in biasing resistors to simplify circuit design without external input components
• Utilizes epitaxial planar die construction for reliable performance
• Compliant with RoHS 3 standards and features halogen-free green packaging

Applications

• Inverter circuits
• Interface applications
• Driver circuits

Procurement Notes

Verify the specific part number against official Diodes Incorporated documentation to confirm resistor configurations and package details. Ensure compliance with environmental directives such as RoHS 3 and REACH requirements relevant to your region. Confirm that the SOT323 package dimensions align with your PCB layout specifications before finalizing procurement.

Selection Notes

Select this component when an NPN pre-biased transistor with R1=22kΩ and R2=47kΩ is required in a compact SOT323 footprint. Consider the 50V voltage rating and 100mA current capacity for appropriate load handling. Verify thermal resistance and power dissipation limits relative to the operating environment to ensure stable performance under expected load conditions.

Part Context

This component belongs to the DDTC (R1≠R2 Series) UA family from Diodes Incorporated. It is specifically designed for surface mount assembly and offers a lead-free, environmentally compliant solution. The series provides various resistor combinations to suit different biasing needs while maintaining consistent electrical characteristics across the product line.

Replacement Considerations

Direct substitutes within the same manufacturer's lineup include other variants from the DDTC124 series or the broader DDTC family with matching R1/R2 ratios. Cross-manufacturer replacements must be evaluated based on pin compatibility, voltage/current ratings, and package dimensions to ensure functional equivalence.