Diodes Incorporated DDTA114YUA-7-F

Overview

DDTA114YUA-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 = 47 kΩ (R1 ≠ R2), V_I(OFF) = −0.3 V, V_I(ON) = −1.3 V at I_O = −1 mA, and DC current gain G_L = −68 at V_CE = −5 V. It operates as a logic-level interface switch in low-power digital control circuits.

For engineers reviewing the DDTA114YUA-7-F datasheet, DDTA114YUA-7-F pinout, DDTA114YUA-7-F application, or DDTA114YUA-7-F equivalent, key selection criteria include input voltage thresholds for 3.3 V/5 V logic compatibility, guaranteed saturation under I_O ≤ −1 mA, resistor tolerance (±30% on R1, ±20% on R2/R1 ratio), and thermal derating per J-STD-020C Level 1 moisture sensitivity.

Technical Context

This device implements a monolithic PNP bipolar junction transistor with two non-matching on-die base bias resistors-R1 connected between base and emitter, R2 between base and collector-enabling single-resistor input drive and stable active-region biasing without external components. Its −1.3 V V_I(ON) threshold ensures reliable turn-on with standard CMOS/TTL high-side logic outputs.

The SOT-323 package supports surface-mount assembly with 0.006 g mass and UL 94V-0 flammability rating; thermal resistance R_θJA is 625 °C/W on FR4 with recommended pad layout AP02001, limiting continuous power dissipation to 200 mW at T_A = 25 °C.

Key Specifications

Pinout & Package

SOT-323 plastic surface-mount package with lead-free matte tin plating over Alloy 42 leadframe; dimensions: A = 0.25–0.40 mm, B = 1.15–1.35 mm, C = 2.00–2.20 mm, D = 0.65 mm nominal, E = 0.30–0.40 mm, G = 1.20–1.40 mm, H = 1.80–2.20 mm, K = 0.90–1.00 mm, L = 0.25–0.40 mm, M = 0.10–0.18 mm, α = 0°–8°.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTA114WUA-7-F, this part offers tighter R2 matching for precision logic thresholds, while versus DDTC114YUA-7-F it provides high-side drive capability essential for ground-referenced load control-making it uniquely suitable for 3.3 V MCU-driven industrial I/O where polarity and current range must be balanced.

Availability

DDTA114YUA-7-F is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and consumer appliance control boards requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for DDTA114YUA-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 and manufacturing operations across Asia and the Americas.

This device belongs to the DDTA (R1≠R2 Series) UA family of pre-biased transistors, engineered specifically for simplified high-side switching in space- and cost-sensitive digital interface applications.

FAQ

What is the maximum continuous output current for DDTA114YUA-7-F?

The maximum continuous output current is −70 mA, as specified in the Absolute Maximum Ratings table under "Output Current" for DDTA114YUA. This rating applies at T_A = 25 °C with proper PCB thermal management per AP02001 pad layout; derating is required above 25 °C per the Fig. 1 derating curve.

Can DDTA114YUA-7-F replace a standard PNP transistor with external bias resistors?

Yes-it replaces a discrete PNP transistor plus two base bias resistors (R_BE, R_BC) in high-side switch applications. Its integrated R1 = 10 kΩ and R2 = 47 kΩ provide identical bias functionality, reducing component count, layout area, and assembly cost while improving consistency across production lots.

Is DDTA114YUA-7-F suitable for 1.8 V logic interface?

No-its V_I(ON) = −1.3 V requires a minimum input swing of approximately −1.3 V to ensure reliable turn-on; 1.8 V logic typically produces only +1.8 V high-level output, which is incompatible with this PNP's negative-input switching architecture. Use only with 3.3 V or 5 V logic families.

What does the "-7-F" suffix indicate in the part number?

The "-7-F" suffix denotes tape-and-reel packaging: "-7" specifies 3000-unit reels per JEDEC standard, and "-F" indicates lead-free, RoHS-compliant finish per Diodes Incorporated's green policy. This matches the ordering information on page 4 of DS30326 Rev. 7-2.