Diodes Incorporated DDTA114TE-7-F

Overview

DDTA114TE-7-F from Diodes Incorporated is a PNP pre-biased transistor in SOT523 package with built-in 10 kΩ base resistor (R1 only), V_CEO = −50 V, I_C = −100 mA peak, V_CE(sat) ≤ −0.3 V at I_C/I_B = −5 mA/−0.5 mA, and h_FE = 100–600. It serves as a compact, lead-free switching element in space-constrained logic interface and load control circuits.

For engineers reviewing the DDTA114TE-7-F datasheet, DDTA114TE-7-F pinout, DDTA114TE-7-F application, or DDTA114TE-7-F equivalent, key selection criteria include verified R1-only biasing topology, guaranteed saturation voltage under defined drive conditions, thermal derating behavior on FR4 PCB, and compatibility with 0.002 g SOT523 assembly processes.

Technical Context

This device implements a single-resistor (R1) pre-biased PNP configuration-no external base resistor required-enabling direct TTL/CMOS-level input drive without current-limiting components. Its epitaxial planar die construction ensures stable gain and low leakage across −55°C to +150°C.

The SOT523 package supports high-density mounting with 833°C/W junction-to-ambient thermal resistance under standardized 15 mm × 15 mm × 0.6 mm FR4 layout. Electrical operation is specified under pulsed test conditions (≤300 µs pulse width, ≤2% duty cycle) for BV_CEO, h_FE, and f_T = 250 MHz.

Key Specifications

Pinout & Package

SOT523 is a 3-pin ultra-small surface-mount plastic package (1.60 mm × 1.60 mm × 0.75 mm), weighing 0.002 g, with matte tin-plated leads compliant to MIL-STD-202 Method 208 solderability requirements.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTA114YK-7 and NSV11400MUTBG, DDTA114TE-7-F delivers the smallest form factor and highest voltage rating among 10 kΩ R1-only PNP bias transistors, making it optimal for miniaturized, high-reliability logic interface designs where board space and 50 V system margin are primary constraints.

Availability

DDTA114TE-7-F is available at Aetrix Electronics and suitable for logic-level interface drivers, LED load switches, low-power sensor biasing, and power-rail enable switches requiring stable component supply and AEC-Q200-aligned manufacturing traceability.

Supply support for DDTA114TE-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-performance, high-reliability components for automotive, industrial, and consumer markets.

The DDTA (R1-only series) product line targets cost-sensitive, space-constrained digital interface and load-switching applications, emphasizing simplified design, reduced BOM count, and consistent RoHS-compliant manufacturing.

FAQ

What is the function of the internal 10 kΩ resistor in DDTA114TE-7-F?

The internal 10 kΩ resistor (R1) connects between base and emitter, providing fixed biasing that allows direct connection of a logic-low signal to the base terminal to saturate the PNP transistor. This eliminates the need for an external base resistor, simplifying circuit design and reducing PCB area in digital switching applications.

Can DDTA114TE-7-F be used in automotive applications?

DDTA114TE-7-F is manufactured in IATF 16949-certified facilities and is RoHS 3 compliant, but it is not AEC-Q101 qualified. For automotive use, Diodes recommends contacting their applications team to evaluate qualification pathways or selecting explicitly AEC-Q101-rated variants such as the DDTA114WQ-7.

How does thermal performance vary with PCB layout?

Thermal resistance is specified as 833°C/W for a 15 mm × 15 mm × 0.6 mm FR4 board with 1 oz copper on one side. Adding thermal vias or increasing copper area reduces R_θJA; for example, doubling copper coverage lowers it to ~650°C/W, enabling sustained 100 mA operation up to +70°C ambient.

Is there a complementary NPN version of this part?

Yes-the DDTC114TE-7-F is the complementary NPN pre-biased transistor with identical 10 kΩ R1 value, SOT523 package, and matching electrical specifications (V_CEO = 50 V, I_C = 100 mA, V_CE(sat) ≤ 0.3 V), enabling balanced push-pull or H-bridge driver designs.