Diodes Incorporated DDTA114WCA-7-F

Overview

DDTA114WCA-7-F from Diodes Incorporated is a 50V PNP pre-biased transistor in SOT23 package, featuring integrated R1 = 10kΩ and R2 = 4.7kΩ bias resistors. It delivers V_IN(ON) = −3.0V at I_OUT = −2mA, V_OUT(ON) ≤ −0.3V, DC current gain (h_FE) = 24, and 200mW power dissipation - optimized for low-current digital switching in space-constrained logic interfaces.

For engineers reviewing the DDTA114WCA-7-F datasheet, DDTA114WCA-7-F pinout, DDTA114WCA-7-F application, or DDTA114WCA-7-F equivalent, key selection criteria include verified input threshold voltage under load, guaranteed output saturation voltage at specified I_C, resistor ratio tolerance (±20%), thermal resistance (625°C/W), and automotive-grade packaging compliance (J-STD-020 Level 1, RoHS 3, halogen-free).

Technical Context

This device implements a monolithic PNP bipolar junction transistor with two discrete on-die biasing resistors (R1 connected to base, R2 from base to emitter), eliminating external component count for digital input stage interfacing. Its −3.0V turn-on threshold and −0.3V saturation voltage enable direct compatibility with 3.3V/5V CMOS/TTL logic families driving inductive or capacitive loads.

The SOT23 package supports automated pick-and-place assembly and provides thermal performance validated at 625°C/W on FR4 PCBs with minimum pad layout. Device operation is specified across −55°C to +150°C, meeting industrial and automotive ambient requirements without derating up to +125°C.

Key Specifications

Pinout & Package

Package: SOT23 - surface-mount, 3-terminal plastic package with 0.915mm typical lead pitch, 2.40mm × 1.30mm footprint, and 0.40mm height; UL 94V-0 rated, moisture sensitivity Level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTA114YCA-7-F, this part offers higher output current drive (−100mA vs. −70mA) and lower V_IN(ON) (−3.0V vs. −1.4V), making it preferable for fast-switching, low-threshold logic interfaces; versus DDTC114WCA-7-F, it enables high-side sourcing where NPN cannot be used directly.

Availability

DDTA114WCA-7-F is available at Aetrix Electronics and suitable for industrial PLC input modules, automotive body control units, and consumer appliance control boards requiring stable component supply, long-term lifecycle support, and RoHS 3-compliant sourcing.

Supply support for DDTA114WCA-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 industrial, automotive, and computing markets.

This device belongs to the DDTA (R1≠R2 SERIES) CA pre-biased transistor family, engineered to reduce design complexity in digital interface circuits by integrating precision-matched bias resistors while maintaining AEC-Q101 readiness and green material compliance.

FAQ

What is the maximum operating temperature for DDTA114WCA-7-F?

The device operates reliably from −55°C to +150°C. Its thermal resistance (R_θJA) is 625°C/W on standard FR4 PCBs, meaning junction temperature remains within safe limits up to +125°C ambient when dissipating ≤200mW - verified per JEDEC JESD51-2 testing conditions.

Does DDTA114WCA-7-F require external bias resistors?

No. It integrates R1 = 10kΩ (base-to-input) and R2 = 4.7kΩ (base-to-emitter) on-die, enabling direct connection of logic-level signals to Pin 2 (base) without external components - confirmed in the schematic diagram and electrical characteristics table of DS30334 Rev. 8-2.

Is DDTA114WCA-7-F qualified for automotive applications?

While not pre-qualified to AEC-Q101 in this specific marking, the DDTA (R1≠R2 SERIES) CA family is manufactured in IATF 16949-certified facilities and supports PPAP documentation. Automotive qualification requires formal change control engagement with Diodes' automotive team per their product definitions page.

What is the meaning of the marking code 'P15' on DDTA114WCA-7-F?

'P15' is the top-side laser marking code identifying the DDTA114WCA variant per Diodes' ordering information table. It appears alongside a 2-character date code (e.g., 'MD' for December 2025) and confirms correct device binning, R1/R2 values, and lot traceability - distinct from generic SOT23-marked transistors.