Diodes Incorporated DDTA113ZKA-7-F

Overview

DDTA113ZKA-7-F from Diodes Incorporated is a PNP pre-biased small-signal transistor in SC-59 package with integrated bias resistors R1 = 1 kΩ and R2 = 10 kΩ (R1 ≠ R2), V_CEO = −50 V, I_C(max) = −100 mA, and DC current gain (h_FE) ≥ 33 at −10 mA/−5 V. It functions as a digital switch or level translator in low-power logic interface circuits.

For engineers reviewing the DDTA113ZKA-7-F datasheet, DDTA113ZKA-7-F pinout, DDTA113ZKA-7-F application, or DDTA113ZKA-7-F equivalent, key selection criteria include input voltage thresholds (V_IN(on) = −3.0 V @ −20 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 integrates two discrete bias resistors (R1 ≠ R2) directly into a PNP epitaxial planar transistor die to enable single-pin digital input control without external components. Its internal resistor network sets base current for predictable switching behavior under defined V_IN conditions.

The SC-59 surface-mount package supports automated assembly and provides thermal performance suitable for ambient temperatures from −55 °C to +150 °C. Input voltage range spans +5 V to −10 V, and output current capability is rated up to −100 mA with guaranteed gain down to −10 mA collector current.

Key Specifications

Pinout & Package

Package: SC-59 - Surface-mount plastic package with three terminals (Emitter, Base, Collector), UL 94V-0 flammability rating, moisture sensitivity level 1, and 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 DDTA123YKA-7-F and DDTC113ZKA-7-F, DDTA113ZKA-7-F offers the lowest input resistance (1 kΩ R1), enabling fastest turn-on response and highest noise immunity in noisy industrial environments.

Availability

DDTA113ZKA-7-F is available at Aetrix Electronics and suitable for industrial sensor interface, automotive body control module, and consumer appliance control board applications requiring stable component supply and long-term production continuity.

Supply support for DDTA113ZKA-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.

This part belongs to the DDTA(R1≠R2) series of pre-biased transistors designed specifically for simplified digital switching in space-constrained, cost-sensitive applications where external bias components must be eliminated.

FAQ

What is the absolute maximum input voltage for DDTA113ZKA-7-F?

The absolute maximum input voltage is +5 V to −10 V, as specified in the "Input Voltage" section of the datasheet. Exceeding −10 V may cause irreversible damage to the internal R1 resistor or base-emitter junction. This rating assumes operation at 25 °C ambient; derating applies at elevated temperatures per the thermal curve in Figure 1.

Can DDTA113ZKA-7-F replace a standard PNP transistor with external bias resistors?

Yes - it replaces a discrete PNP transistor plus two external bias resistors (R1 = 1 kΩ, R2 = 10 kΩ) in digital switching applications. The internal resistors are laser-trimmed to ±30% tolerance and thermally coupled, offering better stability than discrete solutions. No layout change is needed if using SC-59 footprint.

Is DDTA113ZKA-7-F suitable for linear amplification?

No - it is optimized for saturated switching, not linear operation. The datasheet specifies only switching parameters (V_IN(on), V_CE(sat), I_O(off)) and DC gain under switched conditions. Gain-bandwidth product (250 MHz) is provided for reference only and does not guarantee linear performance or stability in amplifier configurations.

What is the moisture sensitivity level (MSL) and reflow profile compliance for this part?

DDTA113ZKA-7-F has MSL Level 1 per J-STD-020C, meaning it can be stored indefinitely at ≤30 °C/60% RH without baking prior to reflow. It is compatible with standard Pb-free reflow profiles (peak 260 °C), and its "Green" molding compound meets UL 94V-0 flammability requirements.