DDTC115GKA-7-F

Overview

The DDTC115GKA-7-F is an NPN pre-biased small signal surface mount transistor from Diodes Incorporated, belonging to the R2-only series. It integrates a single internal biasing resistor (R2) with a nominal value of 100 kOhms. The device features epitaxial planar die construction and is housed in an SC-59 package. Key electrical ratings include a maximum collector-emitter voltage (VCEO) of 50 V, a continuous collector current (IC) of 100 mA, and a power dissipation (Pd) of 200 mW at 25°C. The DC current transfer ratio (hFE) has a minimum value of 82 at IC = 5mA and VCE = 5V. The transition frequency (fT) is typically 250 MHz.

Feature Summary

• Integrates a built-in biasing resistor (R2 only) to simplify circuit design and reduce component count.
• Utilizes epitaxial planar die construction for reliable performance in surface mount applications.
• Complementary PNP types are available within the same product family.

Applications

• General-purpose switching circuits requiring integrated base biasing.
• Driver stages for low-power loads where simplified bias networks are preferred.
• Digital logic interface applications utilizing pre-biased transistor configurations.

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm packaging details. Ensure compliance with RoHS standards and green material requirements as specified in the datasheet notes. Confirm that the SC-59 package dimensions align with the target PCB footprint layout prior to procurement.

Selection Notes

Select this component when an NPN pre-biased transistor with a 100 kOhm internal resistor is required. Compare the 200 mW power dissipation rating against thermal constraints. Verify that the 50 V voltage rating meets the circuit's maximum operating conditions. Consider the complementary DDTA series if a PNP configuration is needed instead.

Part Context

This component belongs to the DDTC (R2-ONLY SERIES) KA family manufactured by Diodes Incorporated. The 'KA' designation specifically indicates the SC-59 case style and the inclusion of only the R2 biasing resistor. The part number structure follows the standard convention for pre-biased transistors, distinguishing it from other series like GCA or TE which utilize different packages or resistor configurations.

Replacement Considerations

Direct substitutes within the same family include DDTC114GKA-7-F (10 kOhm), DDTC124GKA-7-F (22 kOhm), and DDTC144GKA-7-F (47 kOhm). Other manufacturers may offer equivalent NPN pre-biased transistors in SC-59 packages, but electrical parameters such as hFE and VCEO must be verified for compatibility.