Diodes Incorporated DDTA114EE-7-F

Overview

DDTA114EE-7-F from Diodes Incorporated is a 50V PNP pre-biased transistor in SOT523 package with integrated bias resistors R1 = R2 = 10kΩ, designed for digital switching and level translation in low-power logic interfaces. It delivers −50mA output current capability, −0.3V saturation voltage at −10mA load, and DC current gain of −30 (typ) at VO = −5V, IO = −5mA, enabling compact, resistor-free input stage design in automotive and industrial control modules.

For engineers reviewing the DDTA114EE-7-F datasheet, DDTA114EE-7-F pinout, DDTA114EE-7-F application, or DDTA114EE-7-F equivalent, key selection criteria include verified input voltage range (−40V to +10V), guaranteed −30 minimum DC current gain, SOT523 thermal resistance (833°C/W), and AEC-Q101 qualification status for automotive-grade reliability.

Technical Context

This device integrates a PNP bipolar transistor with two matched 10kΩ bias resistors (R1 = R2) in a single SOT523 package, forming an inverter circuit where Pin 1 is input, Pin 2 is emitter (GND reference), and Pin 3 is collector output. Its −40V maximum input voltage rating and −50mA output current support robust interfacing between 3.3V/5V logic and higher-voltage loads.

The transistor operates with V_CE = −10V, I_E = 5mA at f = 100MHz for a 250MHz gain-bandwidth product, confirming suitability for medium-speed digital switching up to ~10MHz edge rates. Input resistor tolerance is ±30%, and resistance ratio tolerance is 0.8–1.2%, ensuring predictable turn-on thresholds across production lots.

Key Specifications

Pinout & Package

Package: SOT523 - ultra-small surface-mount plastic package (1.60 × 1.60 × 0.75 mm), moisture sensitivity level 1, matte tin-plated leads, UL 94V-0 rated.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTA124EE-7-F and DDTA144EE-7-F, DDTA114EE-7-F offers optimal balance of input drive compatibility (−0.88mA @ −5V), output current (−50mA), and speed (250MHz f_T), making it the default choice for general-purpose 3.3V/5V logic interfacing requiring robust sink performance.

Availability

DDTA114EE-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and consumer appliance control systems requiring stable component supply and long-term manufacturing continuity.

Supply support for DDTA114EE-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

This part belongs to the DDTA pre-biased transistor family, engineered specifically for reducing design complexity in digital interface circuits by integrating precision-matched bias resistors with AEC-Q101-qualified PNP transistors.

FAQ

What is the absolute maximum input voltage for DDTA114EE-7-F?

The absolute maximum input voltage (Pin 1 to Pin 2) is −40V to +10V. This rating is validated per JEDEC standards and applies under all operating conditions, including transient events. Exceeding −40V risks irreversible damage to the internal bias resistors and transistor junction.

Can DDTA114EE-7-F replace a discrete PNP transistor plus two external resistors?

Yes - it replaces a standard PNP transistor (e.g., MMBT3906) and two 10kΩ base resistors in inverter configuration. The internal R1/R2 match (0.8–1.2% ratio tolerance) and ±30% absolute tolerance ensure consistent switching behavior without manual resistor selection or layout tuning.

Is DDTA114EE-7-F qualified for automotive use?

Yes - it is AEC-Q101 qualified and manufactured in IATF 16949 certified facilities. Qualification includes stress testing for temperature cycling, high-temperature reverse bias, and unbiased highly accelerated stress test, meeting requirements for body electronics and chassis applications.

What is the thermal resistance of DDTA114EE-7-F in standard SMT mounting?

R_θJA is 833°C/W when mounted on a FR-4 PCB with minimum recommended pad layout (C = 1.29 × 0.40 mm). At 150mW power dissipation, this yields a 125°C junction-to-ambient rise above ambient - derating is required above +25°C ambient to maintain T_J ≤ +150°C.