DDTC124XE-7-F

Overview

The DDTC124XE-7-F is an NPN pre-biased small signal transistor manufactured by Diodes Incorporated. It features built-in biasing resistors with nominal values of R1 = 22kΩ and R2 = 47kΩ, eliminating the need for external input components in inverter circuits. The device utilizes epitaxial planar die construction and is housed in a surface-mount SOT523 package. Key electrical specifications include a maximum supply voltage (VCC) of 50V, a continuous collector current (IOUT) of 100mA, and a power dissipation rating of 150mW at +25°C. The transition frequency (fT) is typically 250MHz, and it operates within a temperature range of -55°C to +150°C.

Feature Summary

• Built-in biasing resistors (R1=22kΩ, R2=47kΩ) simplify circuit design by removing the requirement for external input resistors.
• Epitaxial planar die construction ensures robust performance and reliability.
• Totally lead-free and fully RoHS compliant, meeting EU Directive 2015/863 (RoHS 3).
• Halogen and antimony-free "Green" device formulation.

Applications

• Inverter circuits requiring simplified input configurations.
• Interface driving applications.
• General-purpose switching operations.

Procurement Notes

Verify the specific ordering suffix against official Diodes Incorporated documentation to confirm packaging details and reel size. Confirm that the component meets all applicable regulatory standards required for the target market, including RoHS 3 compliance. Ensure the selected part number matches the exact resistor ratio configuration needed for the application design.

Selection Notes

Select this component when an NPN pre-biased transistor with a 22kΩ base resistor and 47kΩ emitter-base resistor is required. Verify that the 100mA output current and 50V supply voltage ratings exceed the maximum load requirements. Consider the SOT523 package dimensions for PCB layout constraints and ensure thermal management aligns with the 150mW dissipation limit.

Part Context

This component belongs to the DDTC (R1≠R2 Series) E family from Diodes Incorporated. It is specifically designed as an NPN pre-biased transistor variant. Complementary PNP types are available within the DDTA series for applications requiring both polarities.

Replacement Considerations

Direct substitutes within the same series include other DDTC124XE variants if available. Cross-referencing requires matching the NPN polarity, 22kΩ/47kΩ resistor ratio, SOT523 package, and 50V/100mA ratings. Verify equivalent thermal resistance and transition frequency characteristics before substitution.

FAQ

What are the nominal values of the built-in biasing resistors?

The nominal values are R1 = 22kΩ and R2 = 47kΩ.

Is this component suitable for automotive applications?

Standard versions are not explicitly qualified for automotive use. For automotive applications requiring AEC-Q100/101/104/200 qualification, contact Diodes Incorporated directly.

What is the maximum power dissipation rating?

The maximum power dissipation is 150mW at an ambient temperature of +25°C.