Diodes Incorporated DDTC114YUA-7-F

Overview

DDTC114YUA-7-F from Diodes Incorporated is a 50V NPN pre-biased transistor in SOT323 package with integrated R1=10kΩ and R2=47kΩ bias resistors, designed for digital switching applications requiring low input drive current (0.88mA at VIN=5V), low saturation voltage (0.1–0.3V), and DC current gain of 68 at 5mA collector current. It serves as a compact, surface-mount logic-level interface device in power management and signal routing circuits.

For engineers reviewing the DDTC114YUA-7-F datasheet, DDTC114YUA-7-F pinout, DDTC114YUA-7-F application, or DDTC114YUA-7-F equivalent, key selection criteria include verified input resistor tolerance (±30%), resistance ratio tolerance (±20%), guaranteed I_OUT(off) ≤0.5μA at V_CC=50V, thermal resistance of 625°C/W, and AEC-Q101 readiness for automotive-grade designs.

Technical Context

This device integrates an NPN bipolar junction transistor with two monolithically embedded bias resistors (R1=10kΩ, R2=47kΩ) to eliminate external base-drive components. Its epitaxial planar die construction ensures stable gain and low leakage across -55°C to +150°C operating range.

The input voltage threshold is specified at 1.4V (V_IN(on)) with 1mA output current, and it delivers V_OUT(on) ≤0.3V under I_OUT/I_IN = 10mA/0.5mA conditions. Gain-bandwidth product is 250MHz, supporting moderate-speed digital switching up to ~10MHz edge rates.

Key Specifications

Pinout & Package

Package: SOT323 - ultra-small surface-mount plastic package (2.15mm × 2.10mm × 0.95mm), moisture sensitivity level 1, matte tin-plated leads, UL 94V-0 rated molding compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTC123YUA-7-F and DDTC143XUA-7-F, DDTC114YUA-7-F provides the lowest input current demand (0.88mA) and highest R1/R2 ratio, making it optimal for battery-powered or ultra-low-power microcontroller interfaces where drive strength is constrained.

Availability

DDTC114YUA-7-F is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, and power rail sequencing requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for DDTC114YUA-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, energy-efficient components for automotive, industrial, and consumer markets.

This part belongs to the DDTC (R1≠R2 Series) pre-biased transistor family, engineered to simplify digital switching designs by integrating precision bias resistors and delivering consistent gain, leakage, and thermal behavior across temperature and voltage ranges.

FAQ

What is the maximum continuous collector current for DDTC114YUA-7-F?

The absolute maximum collector current is 100mA, but the recommended maximum continuous output current is 70mA under typical PCB mounting conditions. This limit ensures junction temperature remains within safe operating range given the 200mW power dissipation rating and 625°C/W thermal resistance.

Does DDTC114YUA-7-F require external bias resistors?

No. It integrates R1=10kΩ and R2=47kΩ monolithically, eliminating the need for external base resistors. The internal configuration provides fixed current gain control and ensures stable turn-on characteristics without layout-dependent variations.

Is DDTC114YUA-7-F qualified for automotive applications?

Yes. It is manufactured in IATF 16949 certified facilities and supports AEC-Q101 qualification upon request. While the standard part is not pre-certified, Diodes provides PPAP documentation and change control for automotive programs requiring AEC-Q101 compliance.

What is the marking code for DDTC114YUA-7-F on the SOT323 package?

The top-side marking is "N14", followed by a two-character date code (e.g., "K D" for November 2023). The "N14" identifier uniquely distinguishes this variant within the DDTC R1≠R2 series and corresponds to the 10kΩ/47kΩ resistor combination.