DDTC143FCA-7-F

Overview

The DDTC143FCA-7-F is an NPN pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features built-in biasing resistors with nominal values of R1 = 4.7 kΩ and R2 = 22 kΩ, yielding a typical resistor ratio of 0.214. The device operates within a supply voltage range up to 50 V and supports a continuous collector current of 100 mA. Power dissipation is rated at 200 mW, with a minimum DC current gain (hFE) of 68. It utilizes an SOT-23-3 package and functions across a temperature range from -55°C to +150°C.

Feature Summary

• Integrates unequal biasing resistors (R1 ≠ R2) for simplified circuit design
• Qualified to AEC-Q101 standards for high reliability applications
• Utilizes epitaxial planar die construction for robust performance
• Compliant with RoHS directives and halogen/antimony-free green specifications

Applications

• Automotive electronic systems requiring AEC-Q101 qualified components
• General-purpose switching circuits utilizing single NPN configuration
• Surface mount assembly processes compatible with SOT-23 footprints

Procurement Notes

Verify component authenticity through authorized distribution channels to ensure compliance with Diodes Incorporated quality standards. Confirm that the ordering suffix matches the required packaging quantity and reel size specifications. Validate RoHS and AEC-Q101 certification status against project requirements before finalizing procurement orders.

Selection Notes

Select this component when a single NPN transistor with specific unequal biasing resistors is required. The 4.7 kΩ input resistor and 22 kΩ output resistor combination suits applications needing a 0.214 resistance ratio. Ensure the SOT-23 package dimensions and 200 mW power dissipation rating align with the thermal and spatial constraints of the target PCB layout.

Part Context

This part belongs to the DDTC (R1≠R2 Series) CA family of pre-biased transistors. It shares the same electrical and thermal characteristics as other variants in the series but differs in internal resistor values. The 'CA' designation indicates the specific resistor configuration and package type used in this product line.

Replacement Considerations

Direct substitutes include other DDTC143FCA variants from Diodes Incorporated. Verify that any replacement maintains the 4.7 kΩ / 22 kΩ resistor ratio and SOT-23 package compatibility. Automotive applications require equivalents that also hold AEC-Q101 qualification.