Diodes Incorporated DDTC113TE-7

Overview

DDTC113TE-7 from Diodes Incorporated is an NPN pre-biased transistor in SOT523 package with integrated 1 kΩ base bias resistor (R1 only), rated for 50 V V_CEO, 100 mA I_C(MAX), and 150 mW power dissipation. It delivers h_FE of 100–600 at I_C = 1 mA, V_CE = 5 V, and V_CE(sat) ≤ 0.3 V at I_C/I_B = 10 mA/1 mA - used in automotive signal switching, logic-level interface, and load control circuits.

For engineers reviewing the DDTC113TE-7 datasheet, DDTC113TE-7 pinout, DDTC113TE-7 application, or DDTC113TE-7 equivalent, key selection criteria include its AEC-Q101 qualification, R1-only bias topology, SOT523 thermal performance (R_θJA = 833 °C/W), and guaranteed h_FE range across temperature - critical for reliable low-power digital switching in space-constrained automotive ECUs and industrial sensors.

Technical Context

This device implements a monolithic NPN bipolar junction transistor with a single built-in base-emitter pull-up resistor (R1 = 1 kΩ ±30%), eliminating external bias components. Its epitaxial planar die construction ensures stable gain and low leakage (I_CBO, I_EBO ≤ 0.5 µA) across –55 °C to +150 °C operating range.

The SOT523 package enables high-density PCB layouts while maintaining thermal integrity under pulsed or continuous DC loads up to 100 mA. Its f_T of 250 MHz supports fast switching in digital logic buffers and level translators without oscillation risk.

Key Specifications

Pinout & Package

Package: SOT523 - ultra-small surface-mount plastic case (1.60 × 1.60 × 0.55 mm), UL 94V-0 rated, matte tin terminals, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTC113TK-7-F and NSV11300MT1G, DDTC113TE-7 uniquely balances AEC-Q101 compliance, SOT523 miniaturization, and guaranteed h_FE ≥ 100 - making it optimal for next-generation automotive body controllers where size, qualification, and parametric consistency are jointly critical.

Availability

DDTC113TE-7 is available at Aetrix Electronics and suitable for automotive door modules, industrial PLC input stages, LED indicator drivers, and smart meter communication interfaces requiring stable component supply and long-term lifecycle support.

Supply support for DDTC113TE-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 computing markets.

The DDTC (R1-ONLY SERIES) E product line targets space-constrained digital switching applications requiring simplified biasing, AEC-Q101 qualification, and consistent gain - especially in automotive body electronics and industrial I/O modules.

FAQ

What is the function of the built-in R1 resistor in DDTC113TE-7?

The R1 resistor (1 kΩ ±30%) connects internally between base and emitter, providing fixed base bias current to ensure reliable NPN transistor saturation when driven by standard logic voltages (e.g., 3.3 V or 5 V). This eliminates the need for an external base resistor, reducing component count and PCB area while maintaining predictable turn-on behavior across temperature and process variation.

Is DDTC113TE-7 suitable for automotive applications?

Yes - DDTC113TE-7 is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. Its operating temperature range (–55 °C to +150 °C), guaranteed h_FE, and V_CEO = 50 V meet requirements for under-hood and body-control module applications, including door modules, lighting controls, and sensor interface circuits.

How does the SOT523 package affect thermal performance?

The SOT523 package has a thermal resistance of R_θJA = 833 °C/W on FR-4 board with minimum recommended pads. This limits continuous power dissipation to 150 mW at +25 °C ambient. For higher ambient temperatures or pulsed operation, derating per Figure 1 in DS30315 is required - e.g., at +85 °C ambient, max power drops to ~90 mW.

Can DDTC113TE-7 replace a standard NPN transistor like BC847?

No - DDTC113TE-7 is not a drop-in replacement for BC847 because it integrates a base-emitter resistor and lacks independent base access. It functions as a pre-biased switch, whereas BC847 requires external biasing. Substitution would require circuit redesign to remove the external base resistor and verify saturation under the new bias condition.