DCX124EU-7-F

Overview

The DCX124EU-7-F is a complementary pre-biased transistor array from Diodes Incorporated, housed in an SOT363 package. It integrates one NPN and one PNP bipolar junction transistor with internal biasing resistors (R1=22kΩ, R2=22kΩ). The device supports a supply voltage of 50V and handles continuous collector currents up to 100mA per element. Key electrical parameters include a minimum DC current gain (hFE) of 100, a peak output current of 100mA, and a power dissipation rating of 200mW. Operating temperatures range from -55°C to +150°C.

Feature Summary

• Complementary dual configuration integrating NPN and PNP transistors within a single surface-mount package.
• Integrated base bias resistors simplify circuit design by reducing component count and board space.
• Totally lead-free and fully RoHS compliant construction suitable for automated assembly processes.

Applications

• General-purpose switching applications requiring compact digital logic interfaces.
• Driver circuits for low-power loads where minimal external components are preferred.
• Automotive electronics utilizing AEC-Q101 qualified variants within the same family.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation before procurement. Confirm that the selected variant matches the required resistor values and packaging specifications. Ensure compliance with relevant environmental directives such as RoHS and REACH requirements applicable to your region.

Selection Notes

Select this component when a matched NPN/PNP pair with integrated biasing is required in a small footprint. Verify that the 22kΩ internal resistor values align with the target input drive levels. Consider thermal derating curves if operating near maximum power dissipation limits or elevated ambient temperatures.

Part Context

This part belongs to the DCX series of 50V complementary pre-biased transistors. It shares the SOT363 mechanical outline with other variants like the DCX144EU and DCX114EU, which differ primarily in their internal resistor configurations. The 'U' suffix denotes the standard plastic package material.

Replacement Considerations

The datasheet explicitly identifies the DCX124EUQ-7-F as Not Recommended for New Design (NRND) and directs users to use the ACX124EUQ instead. Direct substitution with other DCX series parts requires verification of matching resistor ratios and polarity configurations.

FAQ

What are the nominal values of the internal bias resistors?

For the DCX124EU variant, both the base resistor (R1) and emitter resistor (R2) have nominal values of 22kΩ.

Is this component suitable for automotive applications?

Standard versions are not specified for automotive use. However, the Q-series variants (e.g., DCX124EUQ) are AEC-Q101 qualified and manufactured in IATF 16949 certified facilities.

What is the maximum power dissipation allowed per element?

The total power dissipation is 200mW, but no more than 150mW should be exceeded per individual element.