Diodes Incorporated DDTC113ZCA-7-F

Overview

DDTC113ZCA-7-F from Diodes Incorporated is an NPN pre-biased small-signal transistor in SOT23 package, featuring integrated bias resistors R1 = 1 kΩ and R2 = 10 kΩ (R1 ≠ R2), V_I(OFF) = 0.3 V at 5 V supply, I_O = 100 mA max output current, and AEC-Q101 qualification for automotive applications such as LED load switching in body control modules.

For engineers reviewing the DDTC113ZCA-7-F datasheet, DDTC113ZCA-7-F pinout, DDTC113ZCA-7-F application, or DDTC113ZCA-7-F equivalent, key selection criteria include input voltage threshold (0.3 V), saturation voltage (≤0.3 V at 5 mA), DC current gain (G_L = 33 at 5 mA), resistor tolerance (±30% on R1), and thermal resistance (625 °C/W).

Technical Context

This device integrates a single NPN transistor with two non-matching on-die bias resistors (R1 = 1 kΩ, R2 = 10 kΩ) to form a fixed-current-input inverter configuration. It operates as a digital switch with defined logic thresholds and eliminates external base-resistor design effort.

Designed for 5 V logic-level interfacing, it delivers guaranteed turn-on at V_I(ON) ≤ 3.0 V (IO = 20 mA), maintains V_O(ON) ≤ 0.3 V under 5 mA load, and supports ambient operation from –55 °C to +150 °C with 200 mW power dissipation on FR4 PCB.

Key Specifications

Pinout & Package

Package: SOT23 - Surface-mount plastic case, 0.008 g weight, UL 94V-0 rated, moisture sensitivity level 1, matte tin-plated leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTC123YCA-7-F and DDTC143XCA-7-F, the DDTC113ZCA-7-F offers the lowest V_I(OFF) (0.3 V) and highest input drive capability (Il ≈ 7.2 mA), making it optimal for legacy 5 V logic interfaces where robust noise immunity and strong turn-on margin are required.

Availability

DDTC113ZCA-7-F is available at Aetrix Electronics and suitable for automotive lighting control, industrial programmable logic controller (PLC) outputs, and medical diagnostic equipment status indication requiring stable component supply and AEC-Q101 traceability.

Supply support for DDTC113ZCA-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, specializing in high-reliability components for automotive, industrial, and consumer markets with ISO/TS 16949 and IATF 16949 certification.

This part belongs to the DDTC (R1≠R2 Series) CA family-designed specifically for simplified digital switching in automotive body electronics and industrial control systems where resistor-matched biasing improves production yield and thermal stability.

FAQ

What is the maximum continuous collector current rating for DDTC113ZCA-7-F?

The absolute maximum continuous output current is 100 mA, verified per DS30330 Rev. 11–2 Section "Absolute Maximum Ratings." This rating applies at T_A = +25°C with proper PCB thermal relief; derating is required above 25°C ambient per the 625 °C/W R_θJA curve in Figure 1.

Does DDTC113ZCA-7-F require external base resistors?

No. The device integrates R1 = 1 kΩ and R2 = 10 kΩ on-die, forming a complete pre-biased NPN inverter. External resistors are unnecessary for standard switching operation, though optional pull-downs may be added for fail-safe behavior in safety-critical systems.

Is DDTC113ZCA-7-F suitable for 3.3 V logic interfacing?

Yes. With V_I(ON) ≤ 3.0 V at 20 mA load and V_I(OFF) = 0.3 V, it reliably switches on with 3.3 V GPIO and remains fully off with 0 V or floating inputs, meeting standard CMOS logic thresholds without level translation.

How does the R1 ≠ R2 architecture improve performance over matched-resistor pre-biased transistors?

The asymmetric R1/R2 ratio (1 kΩ/10 kΩ) sets a precise base current-to-collector current ratio (I_B/I_C ≈ 0.25), ensuring deep saturation across process and temperature variations. This yields more consistent V_CE(SAT) and faster turn-off than symmetric configurations, critical for PWM-driven LED dimming.