DDC144EH-7

Overview

The DDC144EH-7 is a dual NPN pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It utilizes epitaxial planar die construction and integrates built-in biasing resistors within an SOT-563 package. The device features a maximum collector-emitter voltage of 50V, a continuous collector current of 100mA, and a power dissipation rating of 150mW at 25°C ambient temperature. Each internal transistor includes a base resistor (R1) and an emitter resistor (R2), both specified at 47kΩ. The component exhibits a typical gain-bandwidth product of 250MHz and operates across a temperature range from -55°C to +150°C.

Feature Summary

• Integrates two NPN transistors with built-in biasing resistors for simplified circuit design
• Utilizes epitaxial planar die construction for reliable performance
• Totally lead-free and fully RoHS compliant without halogen or antimony

Applications

• General-purpose switching applications in consumer electronics
• Driver circuits for low-power loads requiring integrated biasing
• Logic interface circuits between microcontrollers and peripheral devices

Procurement Notes

Verify the specific ordering suffix '-7' corresponds to the tape and reel packaging configuration containing 3,000 units per reel. Confirm that the component meets the required environmental standards, specifically the absence of intentionally added lead, halogens, and antimony as defined by the manufacturer's green product guidelines. Ensure compatibility with standard surface mount assembly processes.

Selection Notes

Select this component when a dual NPN configuration with fixed 47kΩ biasing resistors is required. Compare against other variants in the DDC144 series if different resistance values or alternative packages are needed. Verify that the 150mW power dissipation limit and 50V breakdown voltage align with the target circuit's operating conditions and thermal constraints.

Part Context

This part belongs to the DDC (XXXX) H series of NPN pre-biased dual transistors. Complementary PNP types are available under the DDA prefix. The 'H' suffix indicates the SOT-563 case style. Other members of this family include DDC124EH, DDC143EH, and DDC114YH, which differ primarily in their internal resistor values and maximum output current ratings.

Replacement Considerations

Direct substitutes include other DDC144EH-7 units from Diodes Incorporated. Alternative packages such as SOT-363 may require schematic adjustments due to pinout differences. Verify electrical parameters match exactly before substitution.