Diodes Incorporated DDA114YUQ-7-F

Overview

DDA114YUQ-7-F from Diodes Incorporated is a PNP pre-biased dual transistor in SOT363 package, featuring integrated 10 kΩ and 47 kΩ bias resistors (R1/R2), −50 V V_CBO, −70 mA I_O output current, and AEC-Q101 qualification for automotive use. It functions as a compact, space-saving logic-level interface driver in low-power digital switching applications.

For engineers reviewing the DDA114YUQ-7-F datasheet, DDA114YUQ-7-F pinout, DDA114YUQ-7-F application, or DDA114YUQ-7-F equivalent, this part supports reliable high-side switching with defined input threshold (V_IN(on) = −1.9 V), low saturation voltage (V_CE(sat) ≤ −0.3 V at −5 mA), and thermal stability up to +150 °C - critical for under-hood and body-control module designs.

Technical Context

This dual PNP transistor integrates two identical pre-biased elements sharing common emitter connections per channel, configured for independent digital input control. Each channel includes monolithically integrated R1 (10 kΩ) and R2 (47 kΩ) resistors enabling direct TTL/CMOS-compatible drive without external biasing.

It operates within −55 °C to +150 °C ambient range, delivers −70 mA max output current per channel, and maintains DC current gain (h_FE) of 100–250 at −1 mA I_C. The device uses epitaxial planar die construction and meets IATF 16949 manufacturing standards.

Key Specifications

Pinout & Package

Package: SOT363 - 6-pin, surface-mount, lead-free, halogen-free molded plastic package with 0.65 mm pitch, UL 94V-0 rating, and moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDA114YUQ-7-F, DDA114YU-7-F sacrifices automotive qualification for lower cost, while ADA114YUQ provides identical performance with assured long-term supply and updated change control - making it the optimal choice for new automotive or industrial designs.

Availability

DDA114YUQ-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC interfaces, and medical diagnostic equipment requiring stable component supply and documented AEC-Q101 compliance.

Supply support for DDA114YUQ-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.

This part belongs to the DDA-series pre-biased transistor family, designed specifically to simplify digital interface design in space-constrained, thermally demanding applications where AEC-Q101 compliance is mandatory.

FAQ

Is DDA114YUQ-7-F pin-compatible with DDA114YU-7-F?

Yes, both share identical SOT363 pinout and internal circuit topology. The only differences are qualification status (AEC-Q101 for DDA114YUQ-7-F) and marking code (P14). No PCB redesign is needed when upgrading from DDA114YU-7-F to DDA114YUQ-7-F, though automotive programs must verify PPAP documentation alignment.

What is the maximum allowable continuous current per channel?

The absolute maximum output current is −70 mA per channel, verified at T_A = +25 °C with proper PCB thermal relief. At elevated ambient temperatures (>85 °C), derating applies per Fig. 1 in DS30346 Rev. 14–2: power dissipation drops linearly to 100 mW at +125 °C, limiting usable current to approximately −35 mA under those conditions.

Can DDA114YUQ-7-F be used in AC-coupled signal paths?

No - it is a DC-coupled, unidirectional PNP switch optimized for steady-state logic-level translation and load switching. Its internal bias resistors and lack of symmetrical AC characteristics make it unsuitable for analog signal amplification or AC coupling. Use dedicated small-signal transistors like BC846 for such applications.

Why is DDA114YUQ-7-F marked NRND, and what should designers do?

Diodes has designated DDA114YUQ-7-F as "Not Recommended for New Design" due to planned obsolescence in favor of the functionally identical ADA114YUQ. Designers should migrate to ADA114YUQ to ensure long-term supply, updated qualification records, and continued technical support - especially for automotive or industrial programs requiring multi-year component availability.