Diodes Incorporated DDTA114WE-7-F

Overview

DDTA114WE-7-F from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT523 package with integrated bias resistors R1 = 10 kΩ and R2 = 4.7 kΩ, rated for −50 V V_CEO, −100 mA I_C, and 150 mW power dissipation. It operates across −55 °C to +150 °C and is AEC-Q101 qualified for automotive reliability.

For engineers reviewing the DDTA114WE-7-F datasheet, DDTA114WE-7-F pinout, DDTA114WE-7-F application, or DDTA114WE-7-F equivalent, key selection criteria include input voltage range (−0.8 V to −30 V), DC current gain (G_L = 24 at I_C = −10 mA), saturation voltage (V_CE(SAT) ≤ −0.3 V), and resistor tolerance (±30% on R1, ±20% on R2/R1 ratio).

Technical Context

This device integrates two precision biasing resistors (R1 ≠ R2) directly into a PNP epitaxial planar transistor die, eliminating external base-resistor networks. Its asymmetric resistor configuration enables optimized switching thresholds and stable logic-level interfacing in digital control circuits.

The SOT523 package supports high-density PCB layouts while maintaining thermal resistance of 833 °C/W on FR4. Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements including HTOL, temperature cycling, and ESD (HBM ≥ 2 kV).

Key Specifications

Pinout & Package

SOT523 surface-mount package: ultra-compact 1.6 mm × 1.6 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 DDTA114YE-7-F and DDTC114WE-7-F, DDTA114WE-7-F uniquely balances moderate base drive (−1.8 mA at −5 V) with robust 100 mA switching capability and fast response-making it optimal for mid-current digital interface tasks where both speed and drive strength matter.

Availability

DDTA114WE-7-F is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O conditioning, consumer appliance motor enable functions, and medical equipment status indication requiring stable component supply and AEC-Q101 compliance.

Supply support for DDTA114WE-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 since 1960.

The DDTA series belongs to Diodes' pre-biased transistor product line, engineered specifically for space-constrained digital interface applications requiring reduced external component count, AEC-Q101 qualification, and guaranteed resistor matching.

FAQ

What is the maximum continuous collector current for DDTA114WE-7-F?

The absolute maximum continuous collector current is −100 mA at T_A = 25 °C. Derating applies above 25 °C per the 833 °C/W thermal resistance value; at 85 °C ambient, usable current drops to approximately −65 mA to maintain junction temperature below 150 °C.

Does DDTA114WE-7-F require external base resistors?

No. It integrates R1 = 10 kΩ and R2 = 4.7 kΩ internally, forming a complete bias network. This eliminates the need for external resistors in standard switching configurations, reducing PCB area and assembly steps while ensuring consistent resistor matching and temperature tracking.

Can DDTA114WE-7-F be used in 5 V logic systems?

Yes. With V_IN(ON) = −1.3 V (typical), it reliably switches on when driven by a 5 V microcontroller's logic-low output (0 V), delivering −2 mA collector current. Its −0.8 V V_IN(OFF) ensures full cutoff with logic-high (5 V) applied to the base terminal.

Is the SOT523 package compatible with standard reflow profiles?

Yes. The SOT523 package is qualified for lead-free reflow per J-STD-020, with moisture sensitivity level 1 (unlimited floor life at ≤30 °C/60% RH). Recommended peak reflow temperature is 260 °C for ≤10 seconds, compatible with standard Class 3 assembly processes.