DDTC114WCA-7

Overview

The DDTC114WCA-7-F is an NPN pre-biased small signal surface mount transistor from Diodes Incorporated, housed in a SOT-23 package. It integrates internal biasing resistors with nominal values of R1 = 10 kΩ and R2 = 4.7 kΩ. The device supports a maximum supply voltage (VCC) of 50 V and a continuous collector current (IO) of 100 mA. Electrical characteristics include a minimum DC current gain (hFE) of 24 at IO = 10 mA and VO = 5 V, and a transition frequency (fT) of 250 MHz. Power dissipation is rated at 200 mW, with an operating temperature range spanning -55°C to +150°C.

Feature Summary

• Integrates two distinct biasing resistors (R1 ≠ R2) within a single compact surface-mount package to simplify circuit design.
• Constructed using epitaxial planar die technology for reliable performance.
• Qualified to AEC-Q101 standards for high reliability and capable of PPAP submission.
• Manufactured as a totally lead-free, fully RoHS compliant, and halogen/antimony-free 'Green' device.

Applications

• General-purpose switching applications requiring integrated base drive.
• Automotive electronics systems meeting AEC-Q101 qualification requirements.
• 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 Diodes Incorporated documentation to confirm reel size, tape width, and quantity per reel specifications. Ensure compliance with RoHS 2 and REACH directives by checking the manufacturer's product compliance statements. Confirm that the component marking code matches the datasheet requirements for traceability and authenticity verification during incoming inspection.

Selection Notes

Select this component when a fixed resistor ratio of approximately 2.13 (R1/R2) is required for specific input threshold characteristics. Compare the 100 mA output current limit and 200 mW power dissipation against load requirements. Consider the SOT-23 footprint constraints and thermal resistance of 625 °C/W for PCB layout planning. Verify that the 50 V collector-emitter breakdown voltage exceeds the maximum circuit supply voltage.

Part Context

This part belongs to the DDTC114 series of NPN pre-biased transistors. Variations within the series differ primarily in the nominal values of the integrated base and emitter resistors. The 'CA' designation indicates the specific resistor combination of 10 kΩ and 4.7 kΩ. Other series members like DDTC114YCA offer different ratios, while complementary PNP types are available in the DDTA series.

Replacement Considerations

Direct functional substitutes must match the NPN polarity, SOT-23 package, and similar resistor values (10k/4.7k). Verify that alternative components meet the same AEC-Q101 automotive qualification if used in automotive applications. Check pinout compatibility and ensure thermal and electrical ratings exceed the original design parameters.