DDTC143XE-7

Overview

The DDTC143XE-7-F is an NPN pre-biased transistor from Diodes Incorporated, housed in a SOT523 package. It features built-in biasing resistors with R1 at 4.7kΩ and R2 at 10kΩ. The device supports a maximum supply voltage of 50V and a continuous collector current of 100mA. Electrical characteristics include a minimum DC current gain (GI) of 30 and a transition frequency of 250MHz. Power dissipation is rated at 150mW, with an operating temperature range spanning -55°C to +150°C.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Integrated unequal biasing resistors simplify circuit design
• Totally lead-free and fully RoHS compliant
• Halogen and antimony free green device

Applications

• Interface circuits
• Driver applications
• General-purpose switching

Procurement Notes

Verify the complete part number against official documentation, as suffixes like -7-F indicate specific packaging configurations such as reel size and tape width. Confirm that the required automotive or industrial reliability standards are met by checking the manufacturer's quality definitions and facility certifications before finalizing procurement orders.

Selection Notes

Select this component when a compact NPN solution with integrated biasing is required. Ensure the 4.7kΩ input resistor and 10kΩ emitter-base resistor values align with the target logic levels. Verify that the 100mA output current and 150mW power dissipation limits accommodate the specific load requirements and thermal conditions of the application.

Part Context

This component belongs to the DDTC(R1≠R2 Series)E family of pre-biased transistors. These devices integrate a single NPN transistor with two internal resistors to reduce board space and assembly costs. The complementary PNP type is available as the DDTA series.

Replacement Considerations

Direct replacements must match the SOT523 package, NPN polarity, and identical resistor values (R1=4.7kΩ, R2=10kΩ). Verify that alternative manufacturers meet the same electrical specifications for Vceo, Ic, and GI.