Diodes Incorporated DDTA144VCA-7-F

Overview

DDTA144VCA-7-F from Diodes Incorporated is a 50V PNP pre-biased transistor in SOT23 package, featuring integrated R1 = 47kΩ and R2 = 10kΩ bias resistors. It delivers V_IN(ON) = −5.0V (at I_OUT = −2mA), V_OUT(ON) ≤ −0.3V, I_OUT(MAX) = −30mA, and DC current gain (G_L) ≥ 33. It is used for level-shifting and digital switching in automotive body control modules.

For engineers reviewing the DDTA144VCA-7-F datasheet, DDTA144VCA-7-F pinout, DDTA144VCA-7-F application, or DDTA144VCA-7-F equivalent, key selection criteria include input threshold voltage under load, output saturation voltage at low drive current, resistor ratio tolerance (±20%), thermal resistance (625°C/W), and AEC-Q101 qualification status for automotive use.

Technical Context

This device integrates a PNP bipolar junction transistor with two monolithically embedded resistors (R1 = 47kΩ, R2 = 10kΩ) forming a Thevenin-equivalent base bias network. Its −5.0V turn-on threshold enables direct interface with 3.3V/5V logic outputs driving high-side loads.

The SOT23 package supports automated placement and provides 200mW power dissipation with 625°C/W junction-to-ambient thermal resistance on FR4 PCBs. It operates across −55°C to +150°C and meets AEC-Q101 stress test requirements for automotive applications.

Key Specifications

Pinout & Package

Package: SOT23 - Surface-mount plastic package with 3 terminals, 0.008g mass, UL 94V-0 rated molding compound, and matte tin-plated leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTA144WCA-7-F, DDTA144VCA-7-F offers deeper negative input threshold (−5.0V vs −4.0V) for improved noise margin in 12V automotive domains; compared with DDTA124XCA-7-F, it trades lower V_IN(ON) for higher R1/R2 ratio, enabling more robust operation under varying supply conditions.

Availability

DDTA144VCA-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, and USB-C power delivery subsystems requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant discrete transistors.

Supply support for DDTA144VCA-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 consumer markets.

This part belongs to the DDTA (R1≠R2 SERIES) CA family of pre-biased PNP transistors, designed specifically for simplified digital switching in space-constrained, high-volume automotive and industrial control applications.

FAQ

What is the absolute maximum collector-emitter voltage rating for DDTA144VCA-7-F?

The absolute maximum V_CEO is −50V, verified per DS30334 Rev. 8–2 Absolute Maximum Ratings table. This rating applies at T_AMB = +25°C with no derating applied; operation above −40V requires thermal verification per the 625°C/W R_θJA specification and FR4 pad layout compliance.

Does DDTA144VCA-7-F require external bias resistors?

No. It integrates R1 = 47kΩ and R2 = 10kΩ internally, eliminating need for external base bias components. The base terminal (Pin 2) is not externally accessible-the bias network connects monolithically between emitter and collector paths, enabling true 2-pin functional operation (Emitter and Collector) with logic-level input applied to Pin 1.

Is DDTA144VCA-7-F qualified for automotive applications?

Yes. It is AEC-Q101 qualified and manufactured in IATF 16949 certified facilities. Diodes Incorporated explicitly states that parts in this series meet automotive change control requirements including PPAP capability and qualification to AEC-Q100/101/104/200 standards, as confirmed in the "For automotive applications" note on page 1 of DS30334.

What is the typical output saturation voltage at rated load?

V_OUT(ON) is typically −0.1V and guaranteed ≤ −0.3V at I_OUT = −2mA and I_IN = −0.16mA, per Electrical Characteristics table on page 3 of DS30334. This low saturation voltage ensures minimal power loss (≤0.6mW at 2mA) and supports efficient high-side switching in battery-sensitive designs.