Diodes Incorporated DDTA113ZE-7-F

Overview

DDTA113ZE-7-F from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT523 package, featuring integrated bias resistors R1 = 1 kΩ and R2 = 10 kΩ (R1 ≠ R2), −50 V V_CEO, −100 mA I_O, and 33× DC current gain (h_FE) at −10 mA collector current. It serves as an input-level logic interface or load switch in automotive body control modules requiring AEC-Q101 qualified discrete devices.

For engineers reviewing the DDTA113ZE-7-F datasheet, DDTA113ZE-7-F pinout, DDTA113ZE-7-F application, or DDTA113ZE-7-F equivalent, key selection criteria include verified R1/R2 resistor tolerance (±30% for R1, ±20% for R2/R1 ratio), guaranteed −100 mA output current capability, −0.3 V V_O(ON) saturation voltage at −5 mA/−0.25 mA drive, and SOT523 thermal resistance of 833 °C/W on FR4.

Technical Context

This device implements a monolithic PNP bipolar junction transistor with two laser-trimmed on-die resistors-R1 connected between base and emitter, R2 between base and input terminal-enabling single-resistor input drive without external bias network. Its complementary NPN counterpart is DDTC113ZE.

Designed for high-reliability automotive applications, it operates across −55 °C to +150 °C, meets AEC-Q101 stress testing requirements, and delivers stable switching behavior with V_I(OFF) = −0.3 V (V_CC = −5 V, I_O = −100 µA) and V_I(ON) = −3.0 V (V_O = −0.3 V, I_O = −20 mA).

Key Specifications

Pinout & Package

SOT523 surface-mount plastic package: 1.29 mm × 0.40 mm footprint, 0.33 mm nominal height, matte tin-plated leads, moisture sensitivity level 1, UL 94V-0 rated molding compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTA123YE-7-F and DDTA143XE-7-F, DDTA113ZE-7-F provides the lowest input threshold (−3.0 V) and highest base drive current (−7.2 mA at −5 V), making it optimal for 3.3 V logic compatibility and fast turn-on in automotive body electronics.

Availability

DDTA113ZE-7-F is available at Aetrix Electronics and suitable for automotive door modules, LED indicator drivers, body control units, and smart sensor interfaces requiring stable component supply and AEC-Q101 compliance.

Supply support for DDTA113ZE-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, manufacturing, and sales operations across Asia, Europe, and North America.

The DDTA (R1≠R2) series targets automotive and industrial signal switching applications, delivering pre-biased transistors with precisely trimmed internal resistors to simplify logic-level interfacing in harsh-environment electronics.

FAQ

What is the maximum operating temperature for DDTA113ZE-7-F?

The DDTA113ZE-7-F is rated for operation from −55 °C to +150 °C ambient temperature. This full range is validated per AEC-Q101 test conditions, including temperature cycling and high-temperature operating life, ensuring suitability for under-hood automotive locations like engine control units and lighting modules.

Does DDTA113ZE-7-F require external bias resistors?

No. DDTA113ZE-7-F integrates R1 = 1 kΩ and R2 = 10 kΩ on-die bias resistors configured for PNP operation. These eliminate the need for external base resistors in standard switching applications, reducing component count and PCB area while maintaining consistent turn-on characteristics across temperature and process variation.

How does the SOT523 package affect thermal performance?

The SOT523 package has a thermal resistance of 833 °C/W (junction-to-ambient) when mounted on FR4 with minimum recommended pad layout. This value defines the maximum power dissipation (150 mW) before exceeding the 150 °C junction limit at 25 °C ambient. For higher-power use, thermal relief pads or copper pours are required to reduce R_θJA.

Is DDTA113ZE-7-F pin-compatible with NPN pre-biased transistors?

No. DDTA113ZE-7-F is a PNP device with emitter (pin 1), base (pin 2), and collector (pin 3) in SOT523. Its NPN complement DDTC113ZE uses identical pinout but opposite polarity; direct substitution would reverse circuit functionality and likely cause failure unless topology is redesigned to accommodate NPN sinking behavior.