DDTC123JCA-7

Overview

The DDTC123JCA-7 is an NPN pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features built-in biasing resistors with nominal values of R1 = 2.2 kΩ and R2 = 47 kΩ. The device supports a maximum supply voltage (VCC) of 50 V and a continuous collector current (IO) of 100 mA. Electrical characteristics include a DC current gain (hFE) of at least 80 at IO = 10 mA, and a transition frequency (fT) of 250 MHz. Power dissipation is rated at 200 mW, with an operating temperature range from -55°C to +150°C. It utilizes a SOT-23 package.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Integrated unequal biasing resistors simplify circuit design
• Qualified to AEC-Q101 standards for high reliability applications

Applications

• General-purpose switching circuits
• Driver circuits for logic interfaces
• Automotive electronics requiring AEC-Q101 qualification

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm packaging details such as reel size and tape width. Confirm RoHS compliance status and halogen-free classification requirements prior to procurement. Ensure the component meets PPAP capability needs if used in automotive supply chains. Check for any product change notifications that may affect marking or sourcing.

Selection Notes

Select this component when an NPN digital transistor with specific resistor ratios is required. The 2.2 kΩ base resistor and 47 kΩ emitter resistor define the input impedance and biasing characteristics. Compare electrical parameters like saturation voltage and gain against alternative models in the DDTC series to ensure compatibility with the target application's voltage and current levels.

Part Context

This part belongs to the DDTC (R1≠R2 Series) CA family from Diodes Incorporated. It is complemented by PNP types in the DDTA series. The 'CA' designation indicates the specific package and material composition. Other variants in the series offer different resistor combinations to suit various logic interface requirements while maintaining the same physical footprint and general electrical profile.

Replacement Considerations

Direct substitutes include DDTC123JCA-7-F. Verify pinout compatibility and electrical specifications before substitution. Ensure the replacement part meets the same AEC-Q101 qualification if required for the application.