Diodes Incorporated DDTA114WUA-7-F

Overview

DDTA114WUA-7-F from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT-323 package, featuring integrated bias resistors R1 = 10 kΩ and R2 = 4.7 kΩ (R1 ≠ R2), V_CEO = −50 V, I_C(max) = −100 mA, and DC current gain (G_L) = −24 at V_CE = −5 V, I_C = −10 mA. It serves as a logic-level interface switch in low-power digital control circuits.

For engineers reviewing the DDTA114WUA-7-F datasheet, DDTA114WUA-7-F pinout, DDTA114WUA-7-F application, or DDTA114WUA-7-F equivalent, key selection criteria include input voltage thresholds (V_IN(on) = −1.3 V @ I_O = −2 mA), output saturation voltage (V_O(on) = −0.3 V), thermal resistance (R_θJA = 625 °C/W), and RoHS-compliant green molding compound construction.

Technical Context

This device implements a monolithic PNP bipolar junction transistor with two non-matching on-chip base bias resistors (R1 = 10 kΩ, R2 = 4.7 kΩ), enabling direct TTL/CMOS-compatible switching without external bias network. Its V_IN(off) = −0.8 V and V_IN(on) = −1.3 V define clean logic-level transition under −5 V supply.

The integrated resistor ratio (R2/R1 ≈ 0.47) sets base current division for predictable turn-on behavior, while f_T = 250 MHz supports high-speed digital switching up to ~10 MHz edge rates. Thermal derating follows standard FR4 PCB layout per AP02001, with full operation from −55 °C to +150 °C.

Key Specifications

Pinout & Package

Package: SOT-323 - ultra-small surface-mount plastic package (2.0 × 1.25 × 0.9 mm), moisture sensitivity level 1, lead-free matte tin plating, UL 94V-0 rated.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTA114YUA-7-F and DDTA124XUA-7-F, DDTA114WUA-7-F offers optimal balance of drive capability (−100 mA), input sensitivity (−1.3 V turn-on), and thermal efficiency (625 °C/W), making it ideal for general-purpose logic interfacing in compact industrial controllers.

Availability

DDTA114WUA-7-F is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and consumer appliance power sequencing requiring stable component supply and RoHS-compliant manufacturing.

Supply support for DDTA114WUA-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 centers across Asia and Europe, serving industrial, computing, and automotive markets.

This part belongs to the DDTA (R1≠R2 Series) UA family of pre-biased PNP transistors, engineered specifically for simplified logic-level translation and low-power switching in space-constrained PCB layouts.

FAQ

What is the maximum operating temperature for DDTA114WUA-7-F?

The device operates continuously from −55 °C to +150 °C junction temperature. On a standard FR4 board per AP02001 layout, ambient temperature must be limited to +85 °C at 200 mW dissipation to maintain safe junction temperature. Derating curves in DS30326 Rev. 7–2 confirm linear reduction above 25 °C ambient.

Can DDTA114WUA-7-F replace a discrete PNP transistor plus two resistors?

Yes - it integrates a PNP transistor with R1 = 10 kΩ and R2 = 4.7 kΩ into one SOT-323 package. Pin 1 is emitter/GND(+), Pin 2 is base input, and Pin 3 is collector output. No external bias resistors are needed, reducing layout complexity and improving consistency versus hand-soldered discrete solutions.

Is DDTA114WUA-7-F suitable for driving a 20 mA LED from a −5 V rail?

Yes - its −100 mA I_C(max) and −0.3 V V_O(on) ensure efficient operation. With V_IN(on) = −1.3 V, a −5 V logic signal fully saturates the device. Power dissipation remains below 6 mW (20 mA × 0.3 V), well within the 200 mW limit even at elevated temperatures.

Does this part meet automotive AEC-Q101 requirements?

No - DDTA114WUA-7-F is not AEC-Q101 qualified. It is rated for industrial temperature range (−55 °C to +150 °C) and RoHS compliance, but lacks stress-test validation for automotive qualification. For AEC-Q101 applications, Diodes Incorporated recommends the DDTA114WQ-7-F variant, which shares identical electrical specs but undergoes additional qualification testing.