Diodes Incorporated DDTA114YKA-7-F

Overview

DDTA114YKA-7-F from Diodes Incorporated is a PNP pre-biased small-signal transistor in SC-59 package with 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 (h_FE) ≥ 68 at −10 mA/−5 V. It functions as a digital switch or level translator in low-power logic interface circuits.

For engineers reviewing the DDTA114YKA-7-F datasheet, DDTA114YKA-7-F pinout, DDTA114YKA-7-F application, or DDTA114YKA-7-F equivalent, key selection criteria include input voltage thresholds (V_IN(on) = −1.3 V @ −1 mA), output saturation voltage (V_CE(sat) ≤ −0.3 V), resistor tolerance (±30% on R1), and thermal resistance (625 °C/W).

Technical Context

This device implements a single PNP bipolar junction transistor with two non-matching on-chip base bias resistors-R1 connected between base and input, R2 between base and emitter-enabling direct TTL/CMOS-compatible switching without external bias components. Its R1/R2 ratio of ~1:4.7 sets the turn-on threshold and current gain stability under varying supply conditions.

Designed for surface-mount logic interfacing, it operates across −55 °C to +150 °C with moisture sensitivity level 1 and UL 94V-0 flammability rating. The epitaxial planar die construction ensures consistent V_BE and f_T = 250 MHz performance at V_CE = −10 V and I_E = 5 mA.

Key Specifications

Pinout & Package

Package: SC-59 (SOT-23 variant), molded plastic with green compound, UL 94V-0 rated, 0.008 g weight, lead-free matte tin plating over copper leadframe.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTA114WKA-7-F and DDTA124XKA-7-F, DDTA114YKA-7-F offers balanced input sensitivity and noise immunity-ideal for general-purpose industrial logic interfacing where moderate speed and robust threshold stability are prioritized.

Availability

DDTA114YKA-7-F is available at Aetrix Electronics and suitable for industrial PLC input interfaces, automotive body control modules, and consumer appliance power sequencing requiring stable component supply and long-term production continuity.

Supply support for DDTA114YKA-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 series belongs to Diodes' pre-biased transistor product line, engineered specifically for simplified digital interface design in space-constrained, cost-sensitive applications requiring reliable logic-level translation and switching.

FAQ

What is the maximum operating temperature for DDTA114YKA-7-F?

The device supports an operating junction temperature range of −55 °C to +150 °C, verified per datasheet Section "Maximum Ratings." Its thermal resistance (R_θJA = 625 °C/W) assumes mounting on FR4 PCB with Diodes' recommended pad layout (AP02001). Derating begins above 25 °C ambient at 1.6 mW/°C.

Can DDTA114YKA-7-F replace a standard PNP transistor like BC807?

No-it cannot serve as a drop-in replacement for discrete PNP transistors such as BC807 because its base is not externally accessible; biasing is fully integrated via R1 (10 kΩ) and R2 (47 kΩ). External base control or custom bias networks are incompatible with this pre-biased topology.

Is DDTA114YKA-7-F suitable for 5 V logic interfacing?

Yes-its V_IN(on) = −1.3 V at −1 mA and V_IN(off) = −0.3 V ensure clean switching with 5 V CMOS/TTL outputs. When driven by a 5 V logic high (0 V referenced), the input sees −5 V relative to emitter, well within its −10 V absolute maximum rating and sufficient to saturate the transistor reliably.

Does DDTA114YKA-7-F have AEC-Q101 qualification?

No-the datasheet does not list AEC-Q101 qualification for DDTA114YKA-7-F. While it meets industrial temperature and reliability standards (including J-STD-020C MSL Level 1), automotive-grade qualification requires separate testing and documentation not provided in DS30342 Rev. 7–2.