Diodes Incorporated DDTC114GCA-7-F

Overview

DDTC114GCA-7-F from Diodes Incorporated is an NPN pre-biased small-signal transistor in SOT-23 package, featuring a single built-in 10 kΩ bias resistor (R2 only), 50 V V_CEO, 100 mA I_C(max), and h_FE = 30 at 5 mA/5 V - used for level-shifting and digital switching in compact logic interface circuits.

For engineers reviewing the DDTC114GCA-7-F datasheet, DDTC114GCA-7-F pinout, DDTC114GCA-7-F application, or DDTC114GCA-7-F equivalent, key selection criteria include R2-only bias topology, guaranteed V_CE(sat) ≤ 0.3 V at I_C = 10 mA/I_B = 0.5 mA, JEDEC-compliant SOT-23 footprint, RoHS-compliant green molding compound, and thermal resistance of 625 °C/W on FR4 board.

Technical Context

This device integrates a monolithic NPN transistor with a single external-base bias resistor (R2), eliminating need for discrete base resistors in simple switch configurations. It operates with V_CEO = 50 V and supports continuous collector current up to 100 mA at T_A = 25 °C.

The R2-only architecture simplifies PCB layout for unidirectional digital input buffering and open-collector pull-up replacement. Its f_T = 250 MHz enables stable operation in low-speed digital signal routing, while I_EBO = 300–580 μA at V_EB = 4 V defines leakage-limited off-state integrity.

Key Specifications

Pinout & Package

Package: SOT-23 - JEDEC-standard 3-pin surface-mount plastic package (2.30–2.50 mm length, 1.20–1.40 mm width, 0.37–0.51 mm height), UL 94V-0 rated, moisture sensitivity Level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSV114GUT1G and EMH11T2R, DDTC114GCA-7-F provides superior voltage margin (50 V), higher guaranteed gain (30 vs. 20/35), and greater power handling (200 mW), making it optimal for industrial 24 V digital inputs and robust microcontroller interface protection.

Availability

DDTC114GCA-7-F is available at Aetrix Electronics and suitable for industrial digital input modules, microcontroller GPIO protection, and LED indicator drivers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DDTC114GCA-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, computing, and consumer markets.

The DDTC R2-only series targets cost-sensitive, space-constrained digital interface applications where integrated biasing improves assembly yield and reduces PCB real estate versus discrete transistor + resistor solutions.

FAQ

What is the function of the R2 resistor in DDTC114GCA-7-F?

The R2 resistor is a 10 kΩ internal base-emitter pull-down resistor that biases the transistor into cutoff when no input signal is applied. It eliminates the need for an external base resistor in simple digital switch applications, ensuring predictable turn-off behavior and reducing component count.

Can DDTC114GCA-7-F replace a standard NPN transistor like BC847?

No - DDTC114GCA-7-F is not a drop-in replacement for BC847 because it lacks a standalone base terminal; its base is internally connected to R2. It functions as a two-terminal switch (C/E) with controlled turn-on threshold, whereas BC847 requires external biasing and offers full three-terminal control.

Is DDTC114GCA-7-F suitable for linear amplification?

No - this device is optimized for switching operation, not analog amplification. Its h_FE is specified only at I_C = 5 mA/V_CE = 5 V, and the integrated R2 resistor prevents stable DC biasing required for Class-A amplifier configurations.

What is the maximum operating temperature for continuous use?

The device supports continuous operation from –55 °C to +150 °C junction temperature. At ambient temperatures above 25 °C, power dissipation must be derated linearly per Figure 1 in the datasheet, reaching zero at +150 °C ambient when mounted on FR4 with AP02001 pad layout.