Diodes Incorporated DDTC113ZCA-7

Overview

DDTC113ZCA-7 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_CEO = 50 V, I_C(MAX) = 100 mA, and DC current gain (h_FE) ≥ 33 at I_C = 5 mA. It serves as a logic-level interface switch in automotive body control modules for LED indicator drivers.

For engineers reviewing the DDTC113ZCA-7 datasheet, DDTC113ZCA-7 pinout, DDTC113ZCA-7 application, or DDTC113ZCA-7 equivalent, key selection criteria include input voltage thresholds (V_IN(OFF) ≤ 0.3 V, V_IN(ON) ≥ 3.0 V @ I_O = 20 mA), output saturation voltage (V_CE(SAT) ≤ 0.3 V), AEC-Q101 qualification, and SOT23 thermal performance (R_θJA = 625 °C/W).

Technical Context

This device integrates two discrete resistors (R1 = 1 kΩ, R2 = 10 kΩ) with an NPN epitaxial planar transistor to form a single-input, single-output inverter circuit. Its R1 ≠ R2 topology enables asymmetric switching thresholds ideal for TTL-to-CMOS level translation.

It operates as a digital switch with guaranteed turn-on at V_IN ≥ 3.0 V (I_O = 20 mA, V_O = 0.3 V) and guaranteed turn-off at V_IN ≤ 0.3 V (I_O = 100 μA, V_CC = 5 V), supporting rail-to-rail input compatibility in 3.3 V/5 V mixed-voltage systems.

Key Specifications

Pinout & Package

Package: SOT23 - Surface-mount plastic case (8 mm tape width, 3000 pcs/reel), 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 and DDTC143XCA-7, DDTC113ZCA-7 offers the lowest input resistance (1 kΩ), enabling fastest switching and strongest drive strength-but requires higher input current (7.2 mA), making it optimal for robust 3.3 V/5 V logic sources rather than ultra-low-power interfaces.

Availability

DDTC113ZCA-7 is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC input conditioning, and medical status indication requiring stable component supply, AEC-Q101 compliance, and SOT23 footprint consistency.

Supply support for DDTC113ZCA-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, specializing in high-reliability components for automotive, industrial, and consumer markets.

This part belongs to the DDTC (R1≠R2 Series) CA family-designed specifically for space-constrained, high-volume logic interface applications where integrated biasing eliminates external resistors and ensures AEC-Q101 reliability.

FAQ

Is DDTC113ZCA-7 pin-compatible with standard SOT23 NPN transistors?

No-it uses a proprietary 3-pin configuration where Pin 1 is emitter, Pin 2 is internal base node (not accessible), and Pin 3 is collector. Unlike bare transistors, its base is not externally controllable; input is applied only to Pin 3, output taken from Pin 3, with Pin 1 grounded. This differs fundamentally from discrete NPN SOT23 parts like MMBT3904.

What is the maximum operating temperature for continuous use?

The device is rated for junction temperatures from −55 °C to +150 °C. At ambient temperatures up to +85 °C on a standard FR4 board with minimum pad layout, it sustains full 100 mA output current without derating, based on its 200 mW power dissipation limit and 625 °C/W thermal resistance.

Does DDTC113ZCA-7 support PWM switching at frequencies above 10 kHz?

Yes-its f_T = 250 MHz and typical turn-on/turn-off times in the nanosecond range (per DS30330 Fig. 5–6) enable clean PWM operation up to at least 100 kHz. For 10 kHz+ dimming, ensure gate drive rise/fall times exceed 100 ns to avoid shoot-through in complementary stages.

Can DDTC113ZCA-7 be used in linear amplifier configurations?

No-it is optimized as a saturated switch, not a linear amplifier. The integrated R1/R2 network fixes biasing for digital on/off operation; no external bias adjustment is possible. Its h_FE specification applies only under switching test conditions (V_CE = 5 V, I_C = 5 mA), not linear region characterization.