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 DDTC114YUA-7

Name: DDTC114YUA-7
Brand: Diodes Incorporated
SKU: DDTC114YUA-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: DDTC114YUA-7

Manufacturer:: Diodes Incorporated

Category:: Single, Pre-Biased Bipolar Transistors

Package:: -

Datasheet:: DDTC114YUA-7.pdf

Description:: TRANS PREBIAS NPN 200MW SOT323

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,377

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

Product details

Overview

DDTC114YUA-7 from Diodes Incorporated is a 50V NPN pre-biased transistor in SOT323 package, featuring integrated R1 = 10kΩ and R2 = 47kΩ bias resistors. It delivers 70mA max output current, 68× DC current gain at 5mA collector current, and operates with input voltage range of –6V to +40V. It serves as a compact, surface-mount logic-level switch in automotive body control modules.

For engineers reviewing the DDTC114YUA-7 datasheet, DDTC114YUA-7 pinout, DDTC114YUA-7 application, or DDTC114YUA-7 equivalent, this page provides verified electrical parameters, SOT323 terminal mapping, real-world use cases in level-shifting and load switching, and validated alternative parts for design flexibility.

Technical Context

This device integrates an NPN transistor with two non-matching on-chip resistors (R1 = 10kΩ, R2 = 47kΩ), enabling single-resistor input drive while maintaining stable bias under varying V_CC. Its –6V to +40V input voltage range supports wide logic compatibility, including 3.3V and 5V microcontroller outputs.

The 68× DC current gain (h_FE) at I_C = 5mA and V_CE = 5V ensures reliable saturation with low base drive current (0.88mA typical at V_IN = 5V). Thermal resistance of 625°C/W reflects its SOT323 package's power handling limit of 200mW at T_AMB = 25°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50V - Maximum collector-emitter voltage before breakdown; enables use in 24V automotive supply rails.
I_C(max)	70mA - Peak continuous collector current; suitable for driving small relays or LEDs.
R1 / R2	10kΩ / 47kΩ - Fixed internal bias network; eliminates external resistor layout and reduces BOM count.
h_FE	68 - DC current gain at 5mA I_C; ensures deep saturation with ≤1mA base current.
P_D	200mW - Power dissipation limit on FR4 board; defines thermal derating above 25°C ambient.
f_T	250MHz - Gain-bandwidth product; supports switching up to ~10MHz with adequate gain margin.

Pinout & Package

Package: SOT323 - 3-pin surface-mount plastic package (2.15mm × 2.10mm × 0.95mm), moisture sensitivity level 1, matte tin-plated leads, RoHS and halogen-free compliant.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Transistor emitter terminal	Connected internally to R2; provides common reference for bias network and output path.
2 (Base)	Transistor base node	Internally connected between R1 and R2; accepts logic-level input without external pull-down.
3 (Collector)	Transistor collector terminal	Switched high-side output node; sinks up to 70mA when base driven.

Key Features

Feature	Design Value
Integrated R1/R2 bias network	Eliminates 2 external resistors; reduces PCB area by ≥1.5mm² and assembly steps.
Wide input voltage range	–6V to +40V operation accommodates 1.8V–36V logic families without level shifters.
SOT323 footprint	Compatible with standard 0805 pick-and-place equipment; supports high-density automated assembly.
AEC-Q101 qualification ready	Manufactured in IATF 16949 facilities; meets automotive change control requirements upon request.

Applications

Automotive Door Module

Industrial PLC Output Stage

Use Scenario: Driving window lift motor enable signals and mirror fold/unfold relays in vehicle door ECUs.

IC Role / Device Role / Timing Role: NPN pre-biased switch controlling 12V/24V relay coils via MCU GPIO.

Use Value: Eliminates discrete base resistor network; withstands load dump transients up to 50V.

Use Scenario: Isolating 24V DC output channels from 3.3V FPGA I/O banks in modular PLC backplanes.

IC Role / Device Role / Timing Role: Logic-level translator and current amplifier for digital output drivers.

Use Value: Supports 0.88mA base drive at 5V input; achieves <0.3V saturation voltage at 50mA load.

Smart Lighting Control

USB-C Power Delivery Sequencing

Use Scenario: Enabling RGB LED string drivers in smart ceiling fixtures using PWM from ARM Cortex-M0+.

IC Role / Device Role / Timing Role: Low-power load switch for constant-current LED driver enable lines.

Use Value: 70mA I_C(max) and 200mW P_D support sustained 50mA switching at 10kHz PWM.

Use Scenario: Controlling V_CONN power sequencing and CC line pull-up activation during USB-C port negotiation.

IC Role / Device Role / Timing Role: Precision-controlled enable switch for 5V auxiliary power paths.

Use Value: 10kΩ/47kΩ R1/R2 ratio ensures stable turn-on threshold across temperature (–55°C to +150°C).

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
DDTC123YUA-7-F	R1 = 2.2kΩ, R2 = 10kΩ; higher base current (3.8mA @5V); lower V_IN(on) (3.0V)	Better suited for 3.3V logic with marginal drive strength; less tolerant of noise on input	Select when interfacing with weak-drive MCUs or requiring faster turn-on at lower V_IN
NSVD114YMT1G	Same R1/R2 values (10kΩ/47kΩ); AEC-Q101 qualified; 100mW P_D rating	Designed specifically for automotive; tighter R1 tolerance (±20% vs ±30%)	Choose for production automotive programs requiring PPAP documentation and extended temperature validation

Compared with DDTC123YUA-7-F and NSVD114YMT1G, DDTC114YUA-7 offers optimal balance of low base current (0.88mA), wide input voltage margin (–6V to +40V), and cost-effective industrial qualification-making it ideal for non-safety-critical embedded controls where thermal headroom and noise immunity are prioritized.

Availability

DDTC114YUA-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC output stages, smart lighting control systems, and USB-C power delivery sequencing requiring stable component supply and SOT323 footprint compatibility.

Supply support for DDTC114YUA-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.

This part belongs to the DDTC (R1≠R2 Series) pre-biased transistor family, engineered to replace discrete BJT + resistor combinations in space-constrained, high-reliability applications such as automotive body electronics and industrial automation.

FAQ

What is the maximum safe operating voltage between collector and emitter?

The absolute maximum V_CEO rating is 50V. This value is tested and guaranteed per DS30322 Rev. 11–2. Operation above 50V risks avalanche breakdown and permanent damage. For 24V automotive systems with load dump transients, this rating provides 2× safety margin over nominal 28V peaks.

Can DDTC114YUA-7 be used with 1.8V logic inputs?

No - its minimum guaranteed V_IN(on) is 1.4V (typical), but the datasheet specifies V_IN(on) only under I_OUT = 1mA test condition. At 1.8V input, base current drops to ~0.2mA, insufficient to saturate the transistor reliably. Use DDTC113ZUA-7-F (V_IN(on) = 3.0V @20mA) or add external level shifting for 1.8V interfaces.

Is thermal derating required for continuous 70mA operation?

Yes - at 70mA and V_CE(sat) ≈ 0.2V, power dissipation reaches ~14mW. While well below the 200mW limit, ambient temperatures above 100°C require linear derating per the 625°C/W R_θJA curve. On standard FR4 with minimal copper, full-rated current is only sustainable up to ~125°C junction temperature.

Does this device support reverse-voltage protection on the input pin?

No - Pin 1 (emitter) and Pin 2 (base) form a forward-biased PN junction. Applying –6V to Pin 2 relative to Pin 1 exceeds the absolute maximum reverse input voltage rating and may cause junction breakdown. External series diode or clamping is required for bidirectional input protection.

DDTC114YUA-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: *

Package/Case:: -

Packaging:: Cut Tape (CT)

Product Status:: Active

Transistor Type:: -

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

Voltage - Collector Emitter Breakdown (Max):: -

Resistor - Base (R1):: -

Resistor - Emitter Base (R2):: -

DC Current Gain (hFE) (Min) @ Ic, Vce:: -

Vce Saturation (Max) @ Ib, Ic:: -

Current - Collector Cutoff (Max):: -

Frequency - Transition:: -

Power - Max:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

DDTC114YUA-7 FAQ

1.How can I place an order for DDTC114YUA-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for DDTC114YUA-7 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 DDTC114YUA-7 reliable?

The price and inventory of DDTC114YUA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTC114YUA-7 is usually 5 days.

3.What payment methods are accepted for DDTC114YUA-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC114YUA-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DDTC114YUA-7?

DDTC114YUA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DDTC114YUA-7 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 DDTC114YUA-7?

For technical support, including DDTC114YUA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC114YUA-7 requirements.

6.How does Aetrix verify that DDTC114YUA-7 is sourced from the original manufacturer or authorized distributors?

All DDTC114YUA-7 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 DDTC114YUA-7 meets industry standards.

7.What is the process for return or replacement of DDTC114YUA-7?

All DDTC114YUA-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTC114YUA-7, 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 DDTC114YUA-7 part is unused and in its original packaging.

Return procedure for DDTC114YUA-7:

1.Submit a request within 90 days.

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

Tech Hub

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…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…