DDC144NS-7

Overview

The DDC144NS-7 is a dual NPN pre-biased transistor manufactured by Diodes Incorporated in an SOT363 surface-mount package. It integrates two NPN transistors with built-in biasing resistors, each rated at 47kΩ nominal resistance. The device supports a maximum collector-emitter voltage of 50V and a continuous collector current of 100mA per element. Electrical characteristics include a minimum DC current gain (hFE) of 100 at 5mA collector current and 5V collector-emitter voltage. The transition frequency is typically 250MHz, and the total power dissipation is limited to 200mW.

Feature Summary

• Epitaxial planar die construction for reliable semiconductor performance
• Integrated biasing resistors simplify circuit design and reduce component count
• Totally lead-free and fully RoHS compliant manufacturing process
• Halogen and antimony free green device classification

Applications

• General-purpose switching applications requiring compact dual-transistor solutions
• Low-voltage logic interface circuits
• Driver stages for small signal amplification

Procurement Notes

Verify the specific ordering suffix '-7' corresponds to the standard reel quantity of 3,000 units as documented in the manufacturer's ordering information. Confirm that the required marking code 'S20' matches the production date code requirements for your assembly timeline. Ensure compliance with J-STD-020 moisture sensitivity level 1 handling procedures during storage and reflow soldering processes.

Selection Notes

Select this component when a dual NPN configuration with fixed 47kΩ base resistors is required in a minimal footprint. The SOT363 package offers a compact solution compared to discrete resistor and transistor combinations. Verify that the 50V collector-emitter breakdown voltage and 100mA current rating meet the specific load requirements of the target application circuit.

Part Context

This part belongs to the DDC144 series of digital transistors from Diodes Incorporated. It shares the same electrical specifications and pinout as other variants within the series but differs in internal resistor values or packaging options. The DDC144NS specifically denotes the NPN configuration with 47kΩ resistors in the SOT363 package format.

Replacement Considerations

Direct substitutes within the same family include parts with identical electrical parameters but different resistor values, such as DDC144TU-7 or DDC114YU-7-F, provided the external circuitry accommodates the resistance changes. Cross-manufacturer equivalents in the SOT363 package should be evaluated for pin compatibility and thermal characteristics.