Diodes Incorporated DCX114YU-7

Overview

DCX114YU-7 from Diodes Incorporated is a complementary pre-biased NPN+PNP transistor pair in SOT363, integrating 10kΩ and 47kΩ bias resistors. It supports ±50V supply voltage, delivers ±70mA output current (NPN/ PNP), and achieves 80 DC current gain at −5V/−10mA (PNP) and +5V/+10mA (NPN). Used in compact logic-level interface circuits for automotive body control modules.

For engineers reviewing the DCX114YU-7 datasheet, DCX114YU-7 pinout, DCX114YU-7 application, or DCX114YU-7 equivalent, key selection criteria include input threshold voltage (VI(on) = +1.4V / −1.4V), output saturation voltage (VO(on) = +0.1–0.3V / −0.1–0.3V), resistor tolerance (±30% R1, ±20% R2/R1), and AEC-Q101 qualification for automotive use.

Technical Context

This dual-transistor device integrates matched NPN and PNP silicon transistors with on-die base biasing resistors-R1 = 10kΩ and R2 = 47kΩ-enabling single-supply level-shifting and push-pull switching without external bias networks. The complementary topology supports bidirectional signal inversion and rail-to-rail output swing in low-voltage digital interfaces.

Each transistor operates independently with separate base-emitter and collector-emitter paths, sharing only the common emitter connection (Pin 3 and Pin 6). Thermal derating follows a 625°C/W junction-to-ambient resistance, limiting continuous power dissipation to 200mW at 25°C ambient.

Key Specifications

Pinout & Package

Package: SOT363 - 6-pin surface-mount plastic package (2.15mm × 2.10mm × 0.95mm), lead-free, RoHS-compliant, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DCX123JU-7-F, DCX114YU-7 offers higher VI(on) margin for noise immunity and lower input current draw; versus DCX144EU-7-F, it provides 2.3× higher output current and asymmetric biasing optimized for unbalanced load driving.

Availability

DCX114YU-7 is available at Aetrix Electronics and suitable for automotive body control units, industrial PLC input stages, and USB-C port management systems requiring stable component supply and AEC-Q101 compliance.

Supply support for DCX114YU-7 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 semiconductor company specializing in discrete, analog, and mixed-signal devices for industrial, automotive, computing, and consumer markets.

The DCX series targets space-constrained, high-reliability applications requiring integrated biasing - designed specifically for automotive-grade logic interfacing and industrial signal conditioning with minimal external components.

FAQ

Is DCX114YU-7 qualified for automotive applications?

Yes, DCX114YU-7 is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. It meets automotive requirements for temperature cycling (−40°C to +150°C), humidity testing, and mechanical shock, making it suitable for body electronics, lighting control, and infotainment subsystems.

What is the function of Pins 3 and 4 in the SOT363 package?

Pins 3 and 4 are internally shorted as the common emitter terminal for both NPN and PNP transistors. This shared emitter configuration enables true complementary operation in push-pull or level-shifting topologies without external interconnection, simplifying PCB routing and improving symmetry.

Can DCX114YU-7 replace discrete transistors and resistors in existing designs?

Yes - it replaces two transistors and four bias resistors (two base resistors per transistor). Verified layout equivalence shows identical small-signal behavior and switching timing versus discrete equivalents, provided the original design used 10kΩ/47kΩ base networks and operated within ±50V/±70mA limits.

Does DCX114YU-7 support bidirectional signal translation?

It supports unidirectional logic-level translation in either polarity (NPN for high-side sourcing, PNP for low-side sinking), but not true bidirectional data bus translation like a dedicated level shifter IC. Its complementary pair structure enables push-pull output driving, not passive bus coupling.