Diodes Incorporated DDTA114YCA-7

Overview

DDTA114YCA-7 from Diodes Incorporated is a 50V PNP pre-biased transistor in SOT23 package, featuring integrated R1=10kΩ and R2=47kΩ bias resistors, DC current gain (h_FE) of 68 at I_C=−10mA, V_CE(sat) ≤ −0.3V, and −70mA maximum output current - used for level-shifting and digital switching in automotive body control modules.

For engineers reviewing the DDTA114YCA-7 datasheet, DDTA114YCA-7 pinout, DDTA114YCA-7 application, or DDTA114YCA-7 equivalent, this page delivers verified electrical parameters, validated SOT23 terminal mapping, real-world use cases in low-power logic interfacing, and cross-reference alternatives with documented R1/R2 ratio and saturation voltage differences.

Technical Context

This device implements a monolithic PNP bipolar junction transistor with two discrete on-die biasing resistors (R1=10kΩ, R2=47kΩ) connected between base-emitter and base-collector, enabling single-resistor drive operation without external bias networks. It operates as a digital switch with guaranteed turn-on at V_IN ≤ −1.4V (I_OUT=−1mA).

The SOT23 package supports automated placement and reflow, with thermal resistance R_θJA=625°C/W on FR4 board and −55°C to +150°C operating temperature range - meeting requirements for under-hood automotive electronics where space, reliability, and lead-free compliance are critical.

Key Specifications

Pinout & Package

Package: SOT23 - surface-mount, 3-terminal plastic package with matte tin-plated leads, moisture sensitivity level 1, UL 94V-0 rated molding compound, and 0.008g weight.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTA123YCA-7 and DDTA143ZCA-7, DDTA114YCA-7 offers the lowest input current (−0.88mA) and best match for 3.3V microcontroller outputs, trading off some output current headroom (−70mA) for superior GPIO efficiency and thermal margin in space-constrained modules.

Availability

DDTA114YCA-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, and battery-powered IoT sensor nodes requiring stable component supply, long-term lifecycle support, and AEC-Q101-aligned manufacturing traceability.

Supply support for DDTA114YCA-7 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, manufacturing, and sales operations across Asia, Europe, and North America.

The DDTA series belongs to Diodes' pre-biased transistor product line, engineered specifically for automotive and industrial digital switching applications where board space, assembly cost, and reliability under thermal stress are primary constraints.

FAQ

What is the absolute maximum input voltage for DDTA114YCA-7?

The absolute maximum input voltage (V_IN) is −10V, measured between pin 1 (emitter) and pin 2 (base). This rating is derived from the device's internal R1–R2 network and PNP junction limits, and must not be exceeded even transiently to avoid irreversible damage to the base-emitter junction or integrated resistors.

Does DDTA114YCA-7 require external pull-up or pull-down resistors?

No external bias resistors are required. The device integrates R1=10kΩ (base–emitter) and R2=47kΩ (base–collector), forming a self-contained bias network that ensures reliable turn-on at V_IN ≤ −1.4V and turn-off at V_IN ≥ −0.3V, eliminating need for external components in standard digital interface applications.

Is DDTA114YCA-7 qualified for automotive applications?

DDTA114YCA-7 is manufactured in IATF 16949 certified facilities and meets Diodes' internal AEC-Q101 qualification standards. While not individually PPAP-submitted, it is designated for automotive use per Diodes' product definitions and supports change-controlled supply chains required for Tier 1 automotive programs.

How does the R1/R2 ratio affect switching performance?

The 10kΩ/47kΩ ratio sets the base current division to optimize saturation and turn-off speed: higher R2 relative to R1 reduces base storage charge, cutting turn-off time by ~40% versus symmetric 10kΩ/10kΩ configurations, while maintaining sufficient h_FE margin (68) for robust noise immunity in noisy automotive environments.