DDTC124EKA-7-F

Overview

The DDTC124EKA-7-F is an NPN pre-biased small signal surface mount transistor from Diodes Incorporated, housed in the SC-59 package. It features built-in biasing resistors with nominal values of R1 = 22 kΩ and R2 = 22 kΩ. The device supports a maximum supply voltage (VCC) of 50 V and a continuous collector current (IO) of 30 mA. Power dissipation is rated at 200 mW, with a thermal resistance (RθJA) of 625 °C/W. The DC current gain (hFE) has a minimum value of 56 at VO = 5V and IO = 5mA. Operating and storage temperatures range from -55°C to +150°C.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Integrated biasing resistors simplify circuit design by eliminating external input resistors
• Lead-free and RoHS compliant manufacturing process
• Green molding compound used for devices manufactured after date code 0627

Applications

• Inverter circuits requiring simplified input configurations
• Switching applications within specified voltage and current limits
• General-purpose digital logic interfacing

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm datasheet revision DS30337 Rev. 8-2 matches delivered parts. Check date codes against green molding compound requirements if halogen-free status is critical. Ensure packaging specifications align with tape and reel standards for automated assembly processes.

Selection Notes

Select this component when an NPN pre-biased transistor with 22kΩ internal resistors is required. Verify that the 30 mA output current rating meets application demands. Consider the SC-59 package dimensions for PCB layout constraints. Compare against complementary PNP types like DDTA124EKA if push-pull configurations are needed.

Part Context

This part belongs to the DDTC (R1 = R2 Series) KA family of NPN pre-biased transistors. It shares the same SC-59 package and epitaxial planar construction as other members like DDTC123EKA and DDTC143EKA. The primary distinction lies in the specific resistor values integrated into the device, which determine the input characteristics and drive requirements for the connected circuitry.

Replacement Considerations

Direct substitutes include other DDTC124 variants with identical electrical characteristics but different packages, such as DDTC124ECA-7-F (SOT-23). Ensure pinout compatibility and thermal management requirements are met when substituting across different package types.