Diodes Incorporated DDTA114ECA-7-F

Overview

DDTA114ECA-7-F from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT23 package, featuring integrated bias resistors R1 = R2 = 10 kΩ, −50 V V_CEO, −50 mA I_C(max), and 30× DC current gain (h_FE) at −5 mA collector current. It serves as a logic-level interface switch in automotive body control modules for LED indicator drivers and sensor signal conditioning.

For engineers reviewing the DDTA114ECA-7-F datasheet, DDTA114ECA-7-F pinout, DDTA114ECA-7-F application, or DDTA114ECA-7-F equivalent, key selection criteria include input voltage threshold (V_IN(on) = −1.9 V typ), output saturation voltage (V_CE(sat) = −0.1 V typ at −10 mA), AEC-Q101 qualification, and SOT23 thermal resistance (R_θJA = 625 °C/W).

Technical Context

This device integrates two matched 10 kΩ bias resistors to configure a single-transistor inverter with fixed base drive ratio, eliminating external components for digital switching. Its PNP topology enables high-side load switching with ground-referenced input control.

Designed for automotive-grade reliability, it operates across −55 °C to +150 °C, supports −100 µA leakage at −50 V V_CEO, and delivers stable gain (h_FE = 30 min) under −5 V V_CC and −5 mA I_C conditions per AEC-Q101 stress testing.

Key Specifications

Pinout & Package

Package: SOT23 - Surface-mount plastic package with 3 terminals, 0.008 g weight, UL 94V-0 flammability rating, and 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 DDTA114ECA-7-F, DDTA114YCA-7-F offers identical performance with alternate marking, while ADTA114ECAQ-7-F adds PPAP readiness and formal automotive change control - both retain the same 10 kΩ bias network and −50 mA rating.

Availability

DDTA114ECA-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and consumer appliance control systems requiring stable component supply and long-term lifecycle assurance.

Supply support for DDTA114ECA-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 centers across Asia and manufacturing in Taiwan and China.

This part belongs to the DDTA R1=R2 series of pre-biased transistors, engineered specifically for automotive and industrial applications where space-constrained PCBs demand integrated biasing and AEC-Q101 reliability.

FAQ

What is the maximum operating temperature for DDTA114ECA-7-F?

The device is rated for junction and storage temperatures from −55 °C to +150 °C. Its thermal resistance (R_θJA = 625 °C/W) means that at 200 mW power dissipation on a standard FR-4 board, junction temperature rise is 125 °C above ambient - so operation up to +25 °C ambient ensures safe margins below the 150 °C limit.

Can DDTA114ECA-7-F replace a discrete PNP transistor plus two resistors?

Yes - it replaces a PNP transistor (e.g., MMBT3906) plus two 10 kΩ base resistors in inverter configuration. The internal R1–R2 network matches standard logic interface requirements, reducing PCB area by ~3 mm² and eliminating solder joint risks associated with three discrete components.

Is DDTA114ECA-7-F suitable for 24 V automotive systems?

Yes - its −50 V V_CEO rating provides 2× margin over nominal 24 V systems, and it is AEC-Q101 qualified for load dump (ISO 7637-2 Pulse 5a), surge, and temperature cycling per automotive requirements.

What does the "-7-F" suffix indicate in the part number?

"-7" denotes 7-inch tape-and-reel packaging (3,000 units per reel); "F" indicates lead-free, RoHS-compliant finish with matte tin plating. This matches Diodes Incorporated's standard green packaging specification per J-STD-020 moisture sensitivity level 1.