DDTC123ECA-7

Overview

The DDTC123ECA-7 is an NPN pre-biased small signal surface mount transistor from Diodes Incorporated, housed in a SOT23 package. It features built-in biasing resistors where R1 equals R2, with a nominal resistance of 2.2kΩ. The device operates within a supply voltage range up to 50V and supports an output current of 100mA. Key electrical parameters include an input voltage range of -10V to +12V, a typical DC current gain (hFE) of 20 at 20mA collector current, and a gain-bandwidth product of 250MHz. It complies with AEC-Q101 standards for high reliability and is fully RoHS compliant.

Feature Summary

• Integrates two equal-value biasing resistors directly with the NPN transistor die to simplify circuit design.
• Constructed using epitaxial planar die technology for robust performance in surface mount applications.
• Qualified to AEC-Q101 automotive standards, ensuring high reliability for demanding environments.
• Manufactured as a halogen and antimony-free green device, adhering to strict environmental compliance directives.

Applications

• General-purpose switching circuits requiring integrated base biasing.
• Automotive electronic systems meeting AEC-Q101 reliability requirements.
• Driver stages for low-power loads where space-saving surface mount packaging is critical.

Procurement Notes

Verify the specific ordering suffix, such as -7-F or -13-F, to confirm reel size and quantity per reel before procurement. Ensure the required variant matches the active status listed in the official ordering information table. Confirm that the AEC-Q101 qualification aligns with your project's automotive or industrial reliability specifications. Check for any Not Recommended for New Design (NRND) statuses on similar part numbers to avoid future supply constraints.

Selection Notes

Select this component when a fixed ratio of biasing resistors (R1=R2) is required for NPN switching applications. The 2.2kΩ resistor value determines the input current characteristics; verify that the resulting base drive meets the load requirements at the intended operating voltage. Consider the SOT23 package dimensions if board space is limited. Compare the 100mA output current capability against the maximum load current to ensure adequate headroom under thermal stress conditions.

Part Context

This part belongs to the DDTC series of NPN pre-biased transistors from Diodes Incorporated, characterized by internal R1=R2 resistor configurations. It is distinct from the DDTA series, which offers complementary PNP types. The ECA suffix indicates the specific pinout and electrical characteristics defined for the SOT23 package. This series provides a compact alternative to discrete resistor-transistor networks in signal processing and switching roles.

Replacement Considerations

Direct functional substitutes within the same family include other DDTC variants with different resistor values, such as DDTC143ECA or DDTC114ECA, provided the biasing requirements match. For automotive-grade replacements with identical electrical performance, consider the DDTC123ECAQ variant. Always verify pin compatibility and thermal resistance ratings before substituting.