Diodes Incorporated DDTA113TCA-7-F

Overview

DDTA113TCA-7-F from Diodes Incorporated is a PNP pre-biased transistor in SOT23 package with integrated 1 kΩ base bias resistor (R1 only), −50 V V_CEO, −100 mA I_C, and h_FE of 100–600 at I_C = −1 mA. It delivers low V_CE(sat) of ≤ −0.3 V at I_C/I_B = −10 mA/−1 mA and supports automotive-grade applications via AEC-Q101 qualification readiness.

For engineers reviewing the DDTA113TCA-7-F datasheet, DDTA113TCA-7-F pinout, DDTA113TCA-7-F application, or DDTA113TCA-7-F equivalent, key selection criteria include guaranteed R1 tolerance (±30%), junction-to-ambient thermal resistance (625 °C/W), and verified operation across −55 °C to +150 °C ambient range.

Technical Context

This device implements a monolithic PNP bipolar junction transistor with a single integrated base-emitter pull-up resistor (R1 = 1 kΩ ±30%), eliminating external bias components. Its epitaxial planar die construction ensures stable h_FE and low leakage (I_CBO, I_EBO ≤ −0.5 μA) under reverse-biased conditions up to −50 V.

Designed for digital switching and level translation, it operates with fixed DC current gain (h_FE = 100–600) and exhibits f_T = 250 MHz at V_CE = −10 V, enabling reliable high-speed on/off control in logic interface circuits without requiring external base drive circuitry.

Key Specifications

Pinout & Package

Package: SOT23 - Surface-mount plastic package with 3 terminals, 0.008 g mass, UL 94V-0 flammability rating, and moisture sensitivity level 1 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTA113TCA-7-F, DDTA113ZCA-7-F adds overvoltage protection at the expense of slightly higher V_CE(sat), while NSV113T1T1G trades guaranteed high h_FE for lower unit cost-making the original optimal for precision-switching applications demanding tight gain control and thermal stability.

Availability

DDTA113TCA-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input conditioning, and medical equipment power sequencing requiring stable component supply and long-term lifecycle support.

Supply support for DDTA113TCA-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 computing markets.

This part belongs to the DDTA R1-Only Series of pre-biased transistors, designed specifically to simplify digital interface design by integrating a single base bias resistor-targeting space-constrained, high-volume applications like sensor interfacing and LED driving.

FAQ

What is the function of the internal R1 resistor in DDTA113TCA-7-F?

The internal R1 resistor (1 kΩ ±30%) connects between the base and collector terminals, providing automatic biasing for PNP transistor operation. It enables direct connection to logic-level signals without external components, ensuring predictable turn-on behavior when the collector is pulled low relative to the emitter. This configuration reduces design complexity and PCB footprint in digital switching applications.

Can DDTA113TCA-7-F be used in automotive applications?

Yes-DDTA113TCA-7-F is manufactured in IATF 16949 certified facilities and supports PPAP documentation. While not pre-certified to AEC-Q101, Diodes Incorporated confirms it meets all electrical, thermal, and reliability requirements for automotive use, and qualification testing can be initiated upon customer request for specific vehicle subsystems.

How does the SOT23 package affect thermal performance?

The SOT23 package has a junction-to-ambient thermal resistance (R_θJA) of 625 °C/W when mounted on an FR4 board with minimum recommended copper pads. This limits continuous power dissipation to 200 mW at +25 °C ambient; designers must apply derating curves above 25 °C or increase copper area to maintain safe junction temperatures below +150 °C.

Is DDTA113TCA-7-F compatible with lead-free reflow soldering processes?

Yes-DDTA113TCA-7-F is fully RoHS 3 compliant, lead-free, and halogen-free. Its matte tin-plated leads meet MIL-STD-202 Method 208 solderability requirements and are qualified for standard Pb-free reflow profiles (peak temperature ≤ 260 °C), including JEDEC J-STD-020-compliant moisture-sensitive handling.