Diodes Incorporated DDTA123YCA-7-F

Overview

DDTA123YCA-7-F from Diodes Incorporated is a 50V PNP pre-biased transistor in SOT23 package, featuring integrated R1 = 2.2kΩ and R2 = 10kΩ bias resistors. It delivers DC current gain (h_FE) of 33 at I_C = −10mA, V_CE = −5V, with V_OUT(ON) ≤ −0.3V and I_OUT = −20mA. Designed for low-power digital switching in automotive body control modules and industrial I/O interfaces.

For engineers reviewing the DDTA123YCA-7-F datasheet, DDTA123YCA-7-F pinout, DDTA123YCA-7-F application, or DDTA123YCA-7-F equivalent, this page provides verified electrical parameters, validated SOT23 terminal mapping, real-world use cases in level-shifting and load switching, and cross-reference alternatives with documented R1/R2 and gain differences.

Technical Context

This device integrates a PNP bipolar junction transistor with two discrete on-die biasing resistors (R1 = 2.2kΩ, R2 = 10kΩ) to eliminate external base drive components. Its −50V V_CEO rating and −100mA I_C(max) support robust operation in 12V/24V automotive supply rails.

The input voltage threshold (V_IN(ON) = −3.0V at I_OUT = −20mA) enables direct interfacing with 3.3V/5V logic outputs without level translation. Gain-bandwidth product of 250MHz confirms suitability for moderate-speed switching up to ~10MHz.

Key Specifications

Pinout & Package

Package: SOT23 - Surface-mount plastic package with 3 terminals, 0.008g weight, UL 94V-0 rated molding compound, and matte tin-plated leads compliant with MIL-STD-202.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTA123JCA-7-F, the DDTA123YCA-7-F offers lower V_IN(ON) for faster logic-level turn-on at higher currents, while DDTA123YCA-7-F vs. DDTC123YCA-7-F reflects a fundamental topology choice-high-side sourcing versus low-side sinking-with identical biasing simplicity.

Availability

DDTA123YCA-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and consumer appliance power sequencing requiring stable component supply and AEC-Q101-aligned manufacturing.

Supply support for DDTA123YCA-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 manufacturing in IATF 16949-certified facilities.

This part belongs to the DDTA (R1≠R2 SERIES) CA family, engineered specifically for space-constrained digital switching applications where integrated biasing improves reliability and reduces bill-of-materials complexity in automotive and industrial control systems.

FAQ

What is the maximum continuous collector current for DDTA123YCA-7-F?

The absolute maximum collector current is −100mA, but the recommended continuous operating limit is −20mA at T_A = +25°C with proper PCB thermal relief. Derating is required above +25°C ambient per the 625°C/W θ_JA specification; at +85°C, max continuous I_C drops to approximately −60mA to maintain junction temperature below +150°C.

Can DDTA123YCA-7-F be used in place of a standard PNP transistor with external bias resistors?

Yes - it replaces a discrete PNP transistor plus two base bias resistors (2.2kΩ and 10kΩ), simplifying layout and eliminating resistor tolerance stacking errors. The internal resistors are laser-trimmed during wafer test, ensuring consistent R2/R1 ratio and predictable V_IN(ON) behavior across temperature and lot variations.

Is DDTA123YCA-7-F qualified for automotive applications?

While not individually AEC-Q101 certified on its own data sheet, it is manufactured in Diodes' IATF 16949-certified facilities using AEC-Q101-qualified processes and materials. Customers requiring formal PPAP documentation or change control should contact Diodes directly to initiate qualification for specific automotive programs.

What does the "P05" marking on the SOT23 package indicate?

"P05" is the top-side marking code for DDTA123YCA-7-F per Diodes' ordering information table. It uniquely identifies this variant among the DDTA (R1≠R2 SERIES) CA family and is used for visual inspection and automated optical recognition during assembly. The date code follows adjacent to it per the year/month format defined in the datasheet.