Diodes Incorporated DCX114EK-7-F

Overview

DCX114EK-7-F from Diodes Incorporated is a dual complementary pre-biased NPN+PNP transistor in SOT26 package, integrating 10 kΩ base-emitter resistors (R1 = R2 = 10 kΩ) per transistor section. It supports ±50 V V_CEO, delivers ±50 mA output current (NPN/ PNP), and operates across –55 °C to +150 °C for automotive and industrial logic-level switching applications.

For engineers reviewing the DCX114EK-7-F datasheet, DCX114EK-7-F pinout, DCX114EK-7-F application, or DCX114EK-7-F equivalent, key selection criteria include verified input voltage thresholds (V_IN(on) = ±1.9 V), guaranteed saturation voltage (V_CE(sat) ≤ ±0.3 V at I_C/I_B = 10 mA/0.5 mA), resistor tolerance (±30%), and AEC-Q101 qualification status.

Technical Context

This device integrates two monolithic transistors - one NPN and one PNP - each with matched on-chip biasing resistors (R1 and R2). The NPN section exhibits h_FE = 30–82 at I_C = 5–10 mA and V_CE = 5 V, while the PNP section provides symmetrical gain and saturation behavior under negative bias conditions.

Input logic compatibility is ensured by V_IN(on) = +1.9 V (NPN) and –1.9 V (PNP) at I_O = 5–10 mA, with V_IN(off) = ±0.5 V defining the turn-off threshold. Thermal resistance is fixed at R_θJA = 417 °C/W on FR-4 PCB with minimum pad layout, supporting continuous operation up to 150 °C junction temperature.

Key Specifications

Pinout & Package

SOT26 surface-mount package: 6-pin, lead-free, halogen-free, UL 94V-0 rated molded plastic case weighing 0.016 g. Dimensions conform to JEDEC MO-178AA standard (A2 = 1.10 mm, D = 3.00 mm, E = 2.80 mm, e1 = 1.90 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DCX124EK-7-F and DCX115EK-7-F, DCX114EK-7-F offers balanced drive strength (±50 mA) and moderate input sensitivity (±1.9 V, ±0.88 mA), making it optimal for general-purpose logic interfacing where both speed and current delivery matter.

Availability

DCX114EK-7-F is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O modules, and consumer appliance power sequencing requiring stable component supply and long-term lifecycle assurance.

Supply support for DCX114EK-7-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 with ISO/TS 16949 and IATF 16949 certification.

The DCX series targets space-constrained, high-volume applications needing integrated biasing - designed specifically for automotive body electronics, smart sensors, and programmable logic interfaces where board area and assembly cost are critical.

FAQ

What is the maximum continuous output current per transistor section?

The DCX114EK-7-F supports ±50 mA continuous output current for both NPN and PNP sections under T_A = 25 °C with proper PCB thermal relief. Derating applies above 25 °C per the R_θJA = 417 °C/W curve; at 85 °C ambient, max sustainable current drops to ~35 mA to maintain T_J ≤ 150 °C.

Does DCX114EK-7-F require external base resistors?

No. The device integrates precision-matched 10 kΩ base-emitter resistors (R1 and R2) for both NPN and PNP sections. These eliminate the need for four external bias resistors, reduce layout complexity, and ensure consistent turn-on characteristics across temperature and process variation.

Is DCX114EK-7-F qualified for automotive use?

Yes. While the datasheet states AEC-Q101 qualification is available upon request for automotive-grade variants, DCX114EK-7-F is manufactured in IATF 16949-certified facilities and supports PPAP documentation. Customers requiring formal AEC-Q101 certification should contact Diodes Incorporated or Aetrix Electronics for qualified lot traceability.

How does the input voltage threshold vary with temperature?

V_IN(on) shifts by approximately –2.1 mV/°C for both NPN (+1.9 V @ 25 °C) and PNP (–1.9 V @ 25 °C) sections. At –40 °C, V_IN(on) rises to ~+2.1 V / –2.1 V; at +125 °C, it falls to ~+1.7 V / –1.7 V - remaining fully compatible with standard 3.3 V and 5 V logic families across the full operating range.