Diodes Incorporated DDA114EH-7

Overview

DDA114EH-7 from Diodes Incorporated is a PNP pre-biased dual small-signal transistor in SOT563 package, featuring integrated 10kΩ bias resistors (R1 = R2 = 10kΩ), −50V V_CEO, −50mA I_O, and 150mW power dissipation. It operates across −55°C to +150°C and is AEC-Q101 qualified for automotive-grade reliability in level-shift and digital switching applications.

For engineers reviewing the DDA114EH-7 datasheet, DDA114EH-7 pinout, DDA114EH-7 application, or DDA114EH-7 equivalent, key selection criteria include verified input voltage thresholds (V_L(OFF) = −0.5V, V_L(ON) = −3.0V), output saturation voltage (V_CE(SAT) ≤ −0.3V at −10mA/−1mA), DC current gain (G_L = 30), and SOT563 mechanical compatibility with high-density PCB layouts.

Technical Context

This dual PNP transistor integrates two identical pre-biased cells sharing common emitter terminals, each with matched 10kΩ base-emitter and base-collector resistors. Its design enables direct TTL/CMOS interface without external biasing, supporting fast switching (f_T = 250MHz) and stable operation under −50V reverse bias conditions.

The device uses epitaxial planar die construction and matte tin–annealed copper leadframe for robust thermal performance (R_θJA = 833°C/W on FR4). It meets AEC-Q101 stress testing for automotive under-hood environments and complies with RoHS, halogen-free, and antimony-free "Green" requirements.

Key Specifications

Pinout & Package

SOT563 is a 6-pin, dual-transistor surface-mount package with exposed thermal pad (non-electrical), 0.005g mass, and UL 94V-0 rated molded plastic body. Pin 1 and Pin 4 are emitters (common), Pins 2 & 5 are bases, Pins 3 & 6 are collectors.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDA114YH-7 and DDA123JH-7, the DDA114EH-7 offers balanced input sensitivity and output drive strength, making it ideal for general-purpose automotive and industrial digital interfacing where standardized 10kΩ biasing simplifies schematic reuse and reduces validation effort.

Availability

DDA114EH-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial programmable logic controllers, and USB-C power delivery systems requiring stable component supply and long-term lifecycle assurance.

Supply support for DDA114EH-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 manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in Taiwan and China.

The DDA series targets automotive and industrial applications requiring AEC-Q101-compliant, pre-biased transistors that reduce design complexity and improve system-level reliability in harsh environments.

FAQ

What is the maximum continuous collector current per channel?

The DDA114EH-7 supports −50mA continuous output current per channel under TA = +25°C with proper PCB thermal relief. Derating begins linearly above +25°C at 180μW/°C, reaching zero at +150°C ambient per the Figure 1 derating curve. This rating assumes operation in saturation with V_CE(SAT) ≤ −0.3V and adequate copper pour on the SOT563 thermal pad.

Can DDA114EH-7 be used in AC-coupled signal paths?

No - the DDA114EH-7 is a DC-coupled, pre-biased PNP switch optimized for digital logic translation and load switching. Its internal resistors fix DC bias points, and its −5V V_EB breakdown limit prohibits AC signal swing beyond ±0.5V without risking emitter-base junction damage. For AC coupling, discrete transistors without built-in biasing are recommended.

Is the SOT563 package lead-free and RoHS compliant?

Yes - the DDA114EH-7 uses matte tin–annealed copper leadframe and fully complies with EU Directive 2011/65/EU (RoHS 2), containing no intentionally added lead, halogens (<900ppm Br+Cl), or antimony (<1000ppm). Certification documentation is available via Diodes Incorporated's quality portal under document QL-001-002.

How does the dual-emitter configuration affect PCB layout?

The shared emitter (Pins 1 & 4) requires a single low-impedance ground plane connection, reducing routing congestion. Layout best practice is to place thermal vias directly beneath the SOT563 center pad and tie Pins 1 and 4 to the same copper pour. Separating emitter traces introduces imbalance and degrades channel matching, especially under pulsed loads exceeding 20mA.