DDTC124ECA-7

Overview

The DDTC124ECA-7 is an NPN pre-biased small signal surface mount transistor from Diodes Incorporated, housed in a SOT-23 package. It integrates biasing resistors with nominal values of R1 = 22 kΩ and R2 = 22 kΩ. The device supports a supply voltage (VCC) of 50 V and a continuous collector current (IC) of 100 mA. Electrical characteristics include a minimum DC current gain (hFE) of 56 at IC = 5 mA and VO = 5 V, and a transition frequency (fT) of 250 MHz. Power dissipation is rated at 200 mW, with an operating temperature range spanning -55°C to +150°C.

Feature Summary

• Integrates built-in biasing resistors (R1 = R2) to simplify circuit design by eliminating external input components.
• Constructed using epitaxial planar die technology for reliable performance.
• Qualified to AEC-Q101 standards for high reliability in automotive applications.
• Compliant with RoHS directives and manufactured as a halogen-free green device.

Applications

• Interface driving circuits
• Inverter configurations
• General-purpose switching applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging details and compliance status. The datasheet lists the -7-F variant; ensure the requested part number matches the active status and reel specifications defined in the ordering information table. Confirm that the component meets the required environmental standards for the intended deployment environment.

Selection Notes

Select this component when a single NPN pre-biased transistor with equal base and emitter resistors is required. The 22 kΩ internal resistance values are suitable for standard logic interface applications. Ensure the application current does not exceed the 100 mA maximum rating and that the power dissipation constraints fit within the thermal limits of the SOT-23 package under ambient conditions.

Part Context

This component belongs to the DDTC (R1 = R2 Series) CA family from Diodes Incorporated. It is functionally similar to other variants in the series such as the DDTC123ECA and DDTC144ECA, distinguished primarily by its specific 22 kΩ resistor configuration. The series offers complementary PNP types (DDTA) for complete push-pull or differential drive solutions.

Replacement Considerations

Direct substitutes within the same family include the DDTC124ECAQ-7-F for automotive-grade requirements. Other variants like the DDTC123ECA or DDTC144ECA may be considered if different resistor ratios are acceptable. Verify pinout compatibility and electrical ratings before substitution.

FAQ

What are the nominal values of the integrated biasing resistors?

The DDTC124ECA features integrated biasing resistors where both R1 and R2 have a nominal value of 22 kΩ.

Is this component qualified for automotive applications?

Yes, the device is qualified to AEC-Q101 standards for high reliability, making it suitable for automotive environments.

What is the maximum power dissipation rating?

The maximum power dissipation (PD) is 200 mW when mounted on an FR4 PC board with the minimum recommended pad layout.