DDTD133HC-7-F

Overview

The DDTD133HC-7-F is an NPN pre-biased surface-mount transistor manufactured by Diodes Incorporated. It features a built-in biasing resistor network consisting of R1 (3.3 kΩ) and R2 (10 kΩ). The device supports a maximum supply voltage of 50 V and a continuous collector current of 500 mA, with a power dissipation rating of 250 mW. It operates within a temperature range of -55°C to +150°C and utilizes an SOT-23 package.

Feature Summary

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

Applications

• Switching applications in consumer electronics
• Driver circuits for logic interfaces
• General-purpose amplification stages

Procurement Notes

Verify component authenticity through authorized channels. Confirm the obsolete status indicated in distributor records against official manufacturer discontinuation notices. Ensure compliance with environmental directives such as RoHS 3 and REACH before procurement.

Selection Notes

Select this component when a single NPN transistor with integrated base biasing is required. Verify that the 3.3 kΩ input resistance and 10 kΩ emitter resistance match the specific drive requirements. Check thermal derating curves if operating near the maximum junction temperature limit.

Part Context

This part belongs to the DDTD series of NPN pre-biased transistors from Diodes Incorporated. It shares the same epitaxial planar construction and SOT-23 packaging as other members of the family, differing primarily in the internal resistor values and marking codes.

Replacement Considerations

Check for active equivalents within the DDTD series. Verify pinout compatibility and electrical parameters such as VCEO and IC max. Ensure the replacement part meets the same RoHS and halogen-free specifications.