Diodes Incorporated DDTA114YUA-7

Overview

DDTA114YUA-7 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_CEO = −50 V, I_C(max) = −70 mA, and DC current gain (G_L) of −68 at V_CE = −5 V and I_C = −10 mA. It serves as a logic-level interface switch in low-power digital control circuits.

For engineers reviewing the DDTA114YUA-7 datasheet, DDTA114YUA-7 pinout, DDTA114YUA-7 application, or DDTA114YUA-7 equivalent, key selection criteria include input voltage thresholds (V_IN(on) = −1.3 V @ I_O = −1 mA), output saturation voltage (V_O(on) = −0.3 V), leakage performance (I_O(off) = −0.5 μA), thermal resistance (R_θJA = 625 °C/W), and RoHS-compliant green packaging.

Technical Context

This device integrates two discrete resistors (R1 = 10 kΩ, R2 = 47 kΩ) directly into a PNP epitaxial planar transistor die to form a single-input, single-output inverter circuit. Its asymmetric resistor ratio enables precise threshold control for TTL/CMOS-compatible level shifting.

Designed for surface-mount logic interfacing, it operates with input voltages ranging from +6 V to −40 V and delivers guaranteed −70 mA output current under saturation, with f_T = 250 MHz supporting high-speed switching up to ~10 MHz in buffered configurations.

Key Specifications

Pinout & Package

Package: SOT-323 - ultra-small plastic surface-mount case (2.0–2.2 mm × 1.15–1.35 mm × 0.25–0.40 mm height), UL 94V-0 rated, moisture sensitivity Level 1, lead-free matte tin plating.

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 and DDTA124XUA-7-F, DDTA114YUA-7 offers the optimal balance of −1.3 V input threshold, −68 gain, and −70 mA output drive-making it the default choice for 3.3 V/5 V mixed-signal interface designs requiring both precision and headroom.

Availability

DDTA114YUA-7 is available at Aetrix Electronics and suitable for LED driver interfaces, microcontroller GPIO expansion, and industrial bus termination requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for DDTA114YUA-7 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 manufacturing in China, Taiwan, and the U.S.

The DDTA series belongs to Diodes' pre-biased transistor product line, engineered specifically for eliminating external bias resistors in digital logic interface and signal conditioning applications across consumer, industrial, and automotive markets.

FAQ

What is the maximum safe operating temperature for DDTA114YUA-7?

The DDTA114YUA-7 has an absolute maximum junction temperature of +150°C and storage temperature range of −55°C to +150°C. When mounted on a standard FR4 PCB with recommended pad layout (AP02001), its thermal resistance is 625°C/W; derating begins above +70°C ambient, with full power (200 mW) permitted only below +25°C ambient.

Can DDTA114YUA-7 replace a standard PNP transistor like BC807 in existing designs?

Yes, but only if the circuit relies on external base resistors and does not require the exact R1/R2 values. DDTA114YUA-7 integrates R1 = 10 kΩ and R2 = 47 kΩ, so direct substitution may alter switching thresholds or gain. Verify V_IN(on) (−1.3 V) and V_O(on) (−0.3 V) match your load requirements before replacement.

Is DDTA114YUA-7 suitable for automotive applications?

Yes-it meets AEC-Q101 stress test requirements for discrete transistors, operates across −55°C to +150°C, uses halogen-free green molding compound, and features robust ESD tolerance (HBM > 2 kV). Its −50 V V_CEO and low leakage (−0.5 μA) make it appropriate for body control modules and infotainment power sequencing.

How does the R1 ≠ R2 configuration improve noise immunity compared to symmetric bias networks?

The asymmetric R1/R2 ratio (10 kΩ / 47 kΩ) creates a well-defined input hysteresis window, raising the effective V_IN(off) relative to V_IN(on). This increases noise margin by ~0.4 V versus symmetric networks, suppressing false triggering from EMI in industrial environments where supply ripple or crosstalk exceeds ±100 mV.