Diodes Incorporated DCX124EUQ-13R-F

Overview

DCX124EUQ-13R-F from Diodes Incorporated is a complementary pre-biased NPN+PNP transistor pair in SOT363 package, featuring integrated 22 kΩ base resistors (R1 = R2 = 22 kΩ), 50 V V_CEO/V_CEO, ±30 mA continuous output current per channel, and AEC-Q101 qualification for automotive use.

For engineers reviewing the DCX124EUQ-13R-F datasheet, DCX124EUQ-13R-F pinout, DCX124EUQ-13R-F application, or DCX124EUQ-13R-F equivalent, key selection criteria include input threshold voltage (V_I(on) = ±1.9–3.0 V), on-state output voltage (V_O(on) = ±0.1–0.3 V), DC current gain (G_I = 56–60), thermal resistance (R_θJA = 625 °C/W), and automotive-grade reliability under IATF 16949 manufacturing.

Technical Context

This dual-transistor device integrates matched NPN and PNP silicon transistors with monolithic bias resistors, enabling direct logic-level interface without external base drive components. It supports bidirectional switching in level-shifted or push-pull configurations with symmetrical ±50 V breakdown ratings and ±100 mA peak current capability.

The complementary topology allows simultaneous high-side (PNP) and low-side (NPN) control in compact space-constrained designs. Input voltage thresholds are defined at specific load conditions (e.g., V_I(on) = ±1.9 V at I_O = ±5 mA, V_O = ±0.3 V), ensuring predictable turn-on behavior across temperature and process variation.

Key Specifications

Pinout & Package

Package: SOT363 - 6-pin surface-mount plastic package with 0.65 mm lead pitch, UL 94V-0 rated molding compound, matte tin-plated terminals, and moisture sensitivity level 1 (J-STD-020).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar complementary pre-biased transistor applications.

Compared with DCX124EUQ-13R-F, ACX124EUQ-13R-F offers identical performance with assured supply continuity, while DCX124EU-13R-F provides equivalent functionality without automotive validation-making the former ideal for new automotive projects and the latter appropriate for commercial alternatives where qualification is unnecessary.

Availability

DCX124EUQ-13R-F is available at Aetrix Electronics and suitable for automotive interior lighting, industrial level-shifting interfaces, LED driver circuits, and small-signal load switching requiring stable component supply and traceable sourcing.

Supply support for DCX124EUQ-13R-F includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.

The DCX series targets space-constrained, high-volume applications requiring integrated biasing and automotive qualification-designed specifically to replace discrete BJT + resistor combinations in signal switching and interface functions.

FAQ

Is DCX124EUQ-13R-F still recommended for new designs?

No. The part is marked NRND (Not Recommended for New Design) in Diodes' ordering information, with explicit guidance to use ACX124EUQ instead. This reflects a formal product transition-not obsolescence-but design-in of DCX124EUQ-13R-F carries long-term supply risk and lacks future revision updates or qualification enhancements.

What does "complementary pre-biased" mean for this device?

It means the SOT363 package contains one NPN and one PNP transistor with factory-trimmed internal base resistors (R1 = R2 = 22 kΩ). This eliminates external bias components, enabling direct connection to logic-level inputs while maintaining matched turn-on characteristics between both transistors.

Can DCX124EUQ-13R-F replace discrete BC847/BC857 pairs?

Yes, functionally-provided the application operates within ±30 mA output current and ±50 V voltage limits. Its integrated resistors simplify layout and improve consistency, but unlike discrete BJTs, it cannot be reconfigured for different bias points or gain settings without external modification.

Does the device support PWM dimming of LEDs?

Yes. With 250 MHz f_T, fast switching response, and low V_O(on) (≤ ±0.3 V), it supports PWM frequencies up to several hundred kHz. Its ±100 mA peak current rating also accommodates brief inrush currents during LED turn-on transients.