Diodes Incorporated DDTC113TE-7-F

Overview

DDTC113TE-7-F from Diodes Incorporated is an NPN pre-biased transistor in SOT523 package with integrated 1 kΩ base resistor (R1 only), rated for 50 V V_CEO, 100 mA I_C(MAX), and 150 mW power dissipation; used for digital switching, level translation, and LED driver biasing in space-constrained automotive and industrial control modules.

For engineers reviewing the DDTC113TE-7-F datasheet, DDTC113TE-7-F pinout, DDTC113TE-7-F application, or DDTC113TE-7-F equivalent, key selection criteria include verified R1 tolerance (±30%), h_FE range (100–600), V_CE(sat) ≤ 0.3 V at I_C/I_B = 10 mA/1 mA, AEC-Q101 qualification, and SOT523 thermal resistance (833 °C/W).

Technical Context

This device integrates a single NPN silicon epitaxial planar transistor with one external-base biasing resistor (R1), eliminating need for discrete base resistors in simple on/off switching circuits. It operates with V_EB ≤ 5 V and supports DC current gain up to 600 at I_C = 1 mA and V_CE = 5 V.

The SOT523 package enables high-density PCB layouts while maintaining thermal performance suitable for ambient temperatures from –55 °C to +150 °C. Its f_T of 250 MHz confirms suitability for low-speed digital signal routing-not RF amplification-within logic interface and sensor conditioning paths.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTC113TE-7-F, DDTC113TK-7-F trades miniaturization for thermal headroom, while NSV11300MT1G offers lower cost but sacrifices automotive compliance and resistor precision-making the original optimal for space-constrained, safety-critical automotive modules.

Availability

DDTC113TE-7-F is available at Aetrix Electronics and suitable for automotive body control, industrial PLC input conditioning, and medical wearable sensor interface applications requiring stable component supply and long-term lifecycle support.

Supply support for DDTC113TE-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 DDTC (R1-ONLY SERIES) E family-designed specifically for simplified digital switching in automotive and industrial systems where board space, BOM reduction, and AEC-Q101 reliability are critical.

FAQ

Is DDTC113TE-7-F pin-compatible with standard SOT-23 transistors?

No. DDTC113TE-7-F uses the SOT523 package (1.60 × 1.60 mm), which has different pad layout, pin spacing, and terminal numbering than SOT-23 (2.9 × 1.3 mm). Direct replacement requires PCB redesign and requalification per J-STD-020 moisture sensitivity level 1 handling requirements.

What is the maximum operating frequency for switching applications?

The device's f_T is specified at 250 MHz under test conditions (V_CE = 10 V, I_E = −5 mA), but practical digital switching is limited to ≤ 10 MHz due to SOT523 parasitic capacitance and saturation recovery time. It is not intended for RF amplification or high-speed data line buffering.

Does the ±30% R1 tolerance affect saturation behavior across temperature?

Yes-R1 variation directly impacts base current and thus V_CE(sat) consistency. At I_C = 10 mA, worst-case R1 (+30%) yields ~0.77 mA I_B, still sufficient for saturation given h_FE ≥ 100. Full characterization over –55 °C to +150 °C is provided in Diodes' DS30315 Rev. 11–2 Figure 3.

Can DDTC113TE-7-F be used in linear amplifier configurations?

No. This device is optimized for switching operation with fixed R1 biasing and lacks specifications for linearity, distortion, or small-signal parameters beyond f_T. Its h_FE variation and lack of emitter degeneration make it unsuitable for analog amplification; use dedicated small-signal transistors like BC847 instead.