DDTC124GKA-7-F

Overview

The DDTC124GKA-7-F is an NPN pre-biased small signal surface mount transistor from Diodes Incorporated, housed in an SC-59 package. It features a built-in biasing resistor R2 with a nominal value of 22 kΩ. Key electrical ratings include a collector-emitter voltage (VCEO) of 50 V, a continuous collector current (IC) of 100 mA, and power dissipation (Pd) of 200 mW. The device exhibits a minimum DC current gain (hFE) of 56 at IC = 5mA and VCE = 5V, with a transition frequency (fT) of 250 MHz. Operating temperature ranges from -55°C to +150°C.

Feature Summary

• Integrates a single built-in biasing resistor (R2 only) for simplified circuit design
• Utilizes epitaxial planar die construction for reliable performance
• Complies with RoHS standards and utilizes lead-free plating

Applications

• General-purpose switching applications
• Driver circuits requiring integrated base biasing
• Low-power digital logic interfacing

Procurement Notes

Verify the specific ordering suffix '-7-F' corresponds to the tape and reel packaging configuration containing 3000 units per reel. Confirm that the component meets the required environmental compliance standards, specifically RoHS and Lead-Free specifications, as indicated by the manufacturer's documentation. Ensure the SC-59 package dimensions align with the target PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when a single NPN pre-biased transistor with a 22 kΩ internal emitter resistor is required. The SC-59 package offers a compact solution compared to larger through-hole alternatives. Consider the 200 mW power dissipation limit and the 50 V voltage rating to ensure operation within safe thermal and electrical boundaries for the intended application environment.

Part Context

This part belongs to the DDTC (R2-ONLY SERIES) KA family from Diodes Incorporated. It is functionally complementary to the DDTA series PNP types. The 'KA' designation indicates the SC-59 case style, while the '124' identifier specifies the 22 kΩ resistor value. This series is designed for surface mount assembly processes.

Replacement Considerations

Direct replacements must match the NPN polarity, 50 V rating, 100 mA current capacity, and 22 kΩ internal resistor. Verify package compatibility with the SC-59 form factor. Check datasheets for equivalent hFE and fT specifications to ensure signal integrity is maintained in the existing circuit design.