DDTC123TCA-7

Overview

The DDTC123TCA-7 is an NPN pre-biased transistor from Diodes Incorporated, housed in a SOT-23 package. It features a built-in base resistor (R1) with a nominal value of 2.2 kΩ and a tolerance of ±30%. The device supports a collector-emitter voltage (VCEO) of 50 V and a continuous collector current (IC) of 100 mA. Electrical characteristics include a DC current transfer ratio (hFE) ranging from 100 to 600 at IC = 1 mA, VCE = 5 V, and a gain-bandwidth product (fT) of 250 MHz. Power dissipation is rated at 200 mW, with an operating temperature range spanning -55°C to +150°C.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Integrated single biasing resistor (R1 only) simplifies circuit design
• Totally lead-free and fully RoHS compliant
• Halogen and antimony free "Green" device

Applications

• General-purpose switching applications
• Driver circuits for low-power loads
• Logic interface level shifting

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation before procurement. Confirm that the component meets all required environmental standards, including RoHS and halogen-free specifications, as defined by the supplier's quality definitions. Ensure compatibility with the intended surface mount assembly process and moisture sensitivity levels.

Selection Notes

Select this component when a compact NPN solution with integrated base resistance is required. The 2.2 kΩ internal resistor reduces external component count. Verify that the 50 V collector-emitter voltage and 100 mA current ratings align with the target application's electrical demands. Consider the SOT-23 package dimensions for PCB layout constraints.

Part Context

This part belongs to the DDTC R1-only series from Diodes Incorporated, designed for space-saving applications. It serves as a simplified alternative to discrete resistor-transistor networks. The 'CA' designation indicates the specific pinout and marking configuration for the SOT-23 package variant.

Replacement Considerations

Direct replacements within the same series include DDTC113TCA-7-F (1 kΩ) and DDTC143TCA-7-F (4.7 kΩ). Ensure the replacement maintains the same NPN polarity, SOT-23 package, and electrical ratings.