DDTD142JU-7

Overview

The DDTD142JU-7-F is a single NPN pre-biased transistor manufactured by Diodes Incorporated, housed in an SOT-323 surface-mount package. It integrates built-in biasing resistors with nominal values of R1 = 0.47 kΩ and R2 = 10 kΩ. The device features a collector-emitter breakdown voltage (BVCEO) of 40 V and a continuous collector current rating of 500 mA. Electrical characteristics include a minimum DC current gain (hFE) of 56 and a typical gain-bandwidth product (fT) of 200 MHz. Operating temperatures range from -55°C to +150°C, with a power dissipation capability of 250 mW.

Feature Summary

• Integrates internal biasing resistors to simplify circuit design and reduce component count.
• Utilizes a compact SOT-323 surface-mount package optimized for automated assembly processes.
• Compliant with RoHS standards and manufactured using halogen-free and antimony-free materials.

Applications

• General-purpose switching applications requiring integrated base drive.
• Driver circuits for low-power loads such as LEDs or relays.
• Logic interface buffers between microcontrollers and peripheral devices.

Procurement Notes

Verify the specific ordering suffix '-7-F' against official manufacturer documentation to confirm active status and packaging specifications. Confirm that the required resistor ratio matches the 'J' designation (R1=0.47kΩ, R2=10kΩ). Ensure compliance with environmental directives relevant to the target market before finalizing procurement orders.

Selection Notes

Select this component when a single NPN digital transistor with a 0.47 kΩ input resistor and 10 kΩ emitter-base resistor is required. Verify that the 40 V collector-emitter voltage rating meets the system's maximum supply requirements. Consider the SOT-323 footprint constraints during PCB layout planning.

Part Context

This part belongs to the DDTD series of NPN pre-biased transistors offered by Diodes Incorporated. It serves as a complementary counterpart to the DDTB series, which provides PNP configurations. The device is designed to replace discrete resistor-transistor networks in space-constrained designs.

Replacement Considerations

Direct substitutes within the same family include DDTD122LU-7-F (different resistor values). Cross-manufacturer equivalents require matching the SOT-323 package, NPN polarity, 40V BVCEO rating, and similar integrated resistor ratios.

FAQ

What are the nominal values of the integrated resistors?

The DDTD142JU-7-F includes a base resistor (R1) of 0.47 kΩ and an emitter-base resistor (R2) of 10 kΩ.

Is this component suitable for automotive applications?

Standard versions are not automatically qualified for automotive use. For automotive applications requiring AEC-Q100 qualification and IATF 16949 manufacturing, refer to the related Q-suffix parts listed in the datasheet.

What is the maximum power dissipation?

The maximum power dissipation is 250 mW at an ambient temperature of +25°C, mounted on an FR4 PC board with the minimum recommended pad layout.