DDC143EH-7

Overview

The DDC143EH-7 is an NPN pre-biased small signal dual surface mount transistor manufactured by Diodes Incorporated. It features built-in biasing resistors with values of 4.7 kΩ and 47 kΩ, housed in a SOT-563 package. The device supports a supply voltage (VCC) of 50 V and a continuous collector current (IO) of 100 mA. Power dissipation is rated at 150 mW, with a thermal resistance (RθJA) of 833 °C/W. The DC current gain (hFE) ranges from 100 to 600, and the gain-bandwidth product (fT) is typically 250 MHz. Operating and storage temperatures span from -55°C to +150°C.

Feature Summary

• Epitaxial planar die construction for reliable performance
• Integrated biasing resistors simplify circuit design
• Totally lead-free and fully RoHS compliant
• Halogen and antimony free green device

Applications

• General purpose switching applications
• Driver circuits for low-power loads
• Logic interface buffering

Procurement Notes

Verify component authenticity through authorized Diodes Incorporated distributors or certified partners. Confirm datasheet revision DS30421 Rev. 5-2 matches the supplied documentation. Ensure packaging integrity aligns with tape and reel specifications for automated assembly processes.

Selection Notes

Select this component when dual NPN switching with integrated biasing is required in a compact SOT-563 footprint. Consider the 100 mA output current limit and 150 mW power dissipation constraints during thermal management planning. Verify input voltage limits (-10V to +30V) against the specific application signal levels.

Part Context

This part belongs to the DDC series of pre-biased transistors from Diodes Incorporated. It shares the SOT-563 mechanical case with complementary PNP types like the DDA series. The 'H' suffix indicates the specific package type and resistor configuration within the broader DDC family lineup.

Replacement Considerations

Direct substitutes include other DDC143 variants such as DDC143TH-7 or DDC143XE-7-F if pinout compatibility and electrical characteristics match the specific circuit requirements. Verify resistor values and hFE ranges before substitution.