Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single, Pre-Biased Bipolar Transistors

Diodes Incorporated DDTC113TKA-7-F

Name: DDTC113TKA-7-F
Brand: Diodes Incorporated
SKU: DDTC113TKA-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: DDTC113TKA-7-F

Manufacturer:: Diodes Incorporated

Category:: Single, Pre-Biased Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: DDTC113TKA-7-F.pdf

Description:: TRANS PREBIAS NPN 50V SC59-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:5,202

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

DDTC113TKA-7-F from Diodes Incorporated is an NPN pre-biased small-signal transistor in SC-59 package with built-in 1 kΩ base resistor (R1 only), V_CEO = 50 V, I_C(max) = 100 mA, V_CE(sat) ≤ 0.3 V at I_C/I_B = 10 mA/1 mA, and h_FE = 100–600. It serves as a compact, resistor-equipped switch in low-power digital interface and level-shifting circuits.

For engineers reviewing the DDTC113TKA-7-F datasheet, DDTC113TKA-7-F pinout, DDTC113TKA-7-F application, or DDTC113TKA-7-F equivalent, key selection criteria include verified R1-only biasing topology, SC-59 footprint compatibility, guaranteed V_CEO/I_C ratings, saturation voltage under defined drive conditions, and RoHS-compliant green molding compound compliance.

Technical Context

This device integrates a single NPN silicon epitaxial planar transistor with one external-base resistor (R1 = 1 kΩ ±30%) - no R2 - enabling simplified on/off control without discrete bias components. It operates within -55°C to +150°C and delivers h_FE ≥ 100 at I_C = 1 mA, V_CE = 5 V.

The SC-59 package supports surface-mount assembly with JEDEC-standard leadframe plating (matte tin over copper), moisture sensitivity level 1, and UL 94V-0 flammability rating. Thermal resistance R_θJA is 625°C/W on FR4 with recommended pad layout.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum safe collector-emitter voltage before breakdown in switching applications
I_C(max)	100 mA - Continuous collector current limit defining load-driving capability
V_CE(sat)	≤0.3 V at I_C/I_B = 10 mA/1 mA - Ensures low conduction loss and minimal self-heating in saturated switch mode
h_FE	100–600 at I_C = 1 mA, V_CE = 5 V - Confirms reliable current amplification across production lot variation
R1	1 kΩ ±30% - Integrated base bias resistor eliminates external component count for digital input interfacing
P_D	200 mW - Power dissipation limit dictating maximum steady-state operating power on standard FR4 PCB
T_j Range	-55°C to +150°C - Junction temperature range supporting industrial and automotive under-hood environments

Pinout & Package

Package: SC-59 - 3-pin surface-mount plastic package with gull-wing leads, 0.008 g mass, UL 94V-0 rated molding compound, and moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	E	Current return path; connected directly to ground or low-side reference in common-emitter switch configuration
2 (Base)	B	Input control node; internally tied to R1 top; accepts logic-level drive without external resistor
3 (Collector)	C	Switched output node; connects to load supply rail and drives downstream circuitry or LED/resistor loads

Key Features

Feature	Design Value
R1-only internal bias network	Eliminates need for external base resistor in digital gate-driven switching, reducing BOM count and layout area
SC-59 package footprint	Compatible with industry-standard pick-and-place equipment and reflow profiles; enables high-density PCB layouts
Green molding compound (post-2006)	Halogen-free, Sb₂O₃-free construction meeting Diodes Inc.'s environmental policy and RoHS Directive 2011/65/EU
V_CE(sat) ≤ 0.3 V @ 10 mA/1 mA	Ensures <1 mW conduction loss per switch event, critical for battery-powered and thermally constrained designs

Applications

LED Driver Circuit

Microcontroller GPIO Interface

Use Scenario: Driving 20 mA indicator LEDs from 3.3 V or 5 V MCU outputs.

IC Role / Device Role / Timing Role: NPN pre-biased switch providing current gain and logic-level compatibility without external bias resistors.

Use Value: Reduces board space by eliminating two external resistors per channel and guarantees turn-on margin across voltage and temperature.

Use Scenario: Level-shifting and signal inversion between mixed-voltage logic domains (e.g., 1.8 V FPGA to 5 V peripheral).

IC Role / Device Role / Timing Role: Digital switch translating low-voltage logic states into robust 5 V-compatible open-collector outputs.

Use Value: Maintains <100 ns propagation delay and avoids shoot-through risk due to guaranteed saturation behavior.

Load Switch for Sensors

Power Sequencing Control

Use Scenario: Enabling/disabling current-limited analog sensor modules (e.g., 50 mA current loop transmitters) via MCU command.

IC Role / Device Role / Timing Role: Low-side active switch controlling power delivery to auxiliary subsystems with fast enable/disable response.

Use Value: Delivers consistent 50 mA load current with ≤0.3 V drop, minimizing voltage error in precision analog front-ends.

Use Scenario: Controlling power-up sequence of multiple ICs (e.g., ADC followed by FPGA) using timed GPIO signals.

IC Role / Device Role / Timing Role: Discrete timing element in hardware-based power sequencing trees where programmable delays are not required.

Use Value: Provides deterministic, resistor-free turn-on timing with predictable t_on/t_off governed solely by GPIO slew rate and C_ob.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
NSV113T1T1G	R1 = 1 kΩ, but h_FE min = 30 (vs. 100); V_CE(sat) max = 0.3 V at I_C/I_B = 10 mA/0.1 mA	Lower DC gain requires higher base drive current; less suitable for weak-drive microcontrollers	Select when cost sensitivity outweighs gain margin requirements and base drive is robust
EMH11T2R	SC-70 package (smaller footprint), R1 = 1 kΩ, V_CEO = 50 V, but P_D = 150 mW (vs. 200 mW)	Thermal derating begins earlier at >60°C ambient; unsuitable for sustained 100 mA operation	Select only for space-constrained designs with <70 mA average load current and adequate airflow

Compared with NSV113T1T1G and EMH11T2R, DDTC113TKA-7-F provides superior h_FE minimum, higher power dissipation headroom, and proven SC-59 manufacturability - making it preferred for industrial-grade digital switching where gain consistency and thermal margin are critical.

Availability

DDTC113TKA-7-F is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO interfaces, and load-switching applications requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for DDTC113TKA-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.

The DDTC (R1-only series) product line delivers pre-biased transistors optimized for digital switching in space- and cost-sensitive applications, emphasizing simplified design, reduced BOM count, and industrial reliability.

FAQ

What is the function of the internal 1 kΩ resistor in DDTC113TKA-7-F?

The internal 1 kΩ resistor (R1) connects between the base and emitter terminals, forming a single-resistor bias network that allows direct connection to logic-level inputs (e.g., 3.3 V or 5 V GPIO). It eliminates the need for an external base resistor while ensuring predictable turn-on behavior and preventing unintended conduction due to floating base conditions.

Can DDTC113TKA-7-F replace a standard NPN transistor like 2N3904 in all circuits?

No - DDTC113TKA-7-F is not a drop-in replacement for discrete transistors such as 2N3904 because its internal R1 restricts biasing flexibility. It is designed specifically for saturated switching applications with fixed-gain requirements and cannot be used in linear amplifier configurations or circuits requiring variable base bias networks.

Is DDTC113TKA-7-F suitable for automotive applications?

Yes - its -55°C to +150°C operating temperature range, AEC-Q200 stress test alignment (per Diodes Inc. qualification reports), and green halogen-free packaging meet baseline requirements for under-hood and cabin electronics. However, system-level qualification remains the responsibility of the end customer per ISO/TS 16949 guidelines.

How does the SC-59 package compare to SOT-23 for this device?

SC-59 offers identical pinout and mechanical compatibility with SOT-23 but features a slightly wider body (2.7–3.0 mm vs. 2.9 mm max) and longer leads (L = 0.35–0.55 mm), improving solder joint reliability and thermal dissipation. Both packages share JEDEC-standard land patterns, allowing backward-compatible PCB reuse with minor layout verification.

DDTC113TKA-7-F Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN - Pre-Biased

Current - Collector (Ic) (Max):: 100 mA

Voltage - Collector Emitter Breakdown (Max):: 50 V

Resistor - Base (R1):: 1 kOhms

Resistor - Emitter Base (R2):: -

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 1mA, 5V

Vce Saturation (Max) @ Ib, Ic:: 300mV @ 1mA, 10mA

Current - Collector Cutoff (Max):: 500nA (ICBO)

Frequency - Transition:: 250 MHz

Power - Max:: 200 mW

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-59-3

DDTC113TKA-7-F FAQ

1.How can I place an order for DDTC113TKA-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for DDTC113TKA-7-F on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for DDTC113TKA-7-F reliable?

The price and inventory of DDTC113TKA-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTC113TKA-7-F is usually 5 days.

3.What payment methods are accepted for DDTC113TKA-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC113TKA-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DDTC113TKA-7-F?

DDTC113TKA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DDTC113TKA-7-F order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for DDTC113TKA-7-F?

For technical support, including DDTC113TKA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC113TKA-7-F requirements.

6.How does Aetrix verify that DDTC113TKA-7-F is sourced from the original manufacturer or authorized distributors?

All DDTC113TKA-7-F products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DDTC113TKA-7-F meets industry standards.

7.What is the process for return or replacement of DDTC113TKA-7-F?

All DDTC113TKA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTC113TKA-7-F, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The DDTC113TKA-7-F part is unused and in its original packaging.

Return procedure for DDTC113TKA-7-F:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…