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Diodes Incorporated DDTC114EE-7
- Part No.:
- DDTC114EE-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SOT-523
- Datasheet:
-
DDTC114EE-7.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:9,575
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Product details
Overview
DDTC114EE-7 from Diodes Incorporated is an NPN pre-biased transistor in SOT523 package with integrated bias resistors R1 = R2 = 10 kΩ, designed for digital switching and level translation in low-power logic interfaces. It delivers 50 mA output current (IO), 30× DC current gain (hFE), and operates with input voltage thresholds of VI(OFF) ≤ 1.1 V and VI(ON) ≥ 1.9 V at VO = 0.3 V - used in LED driver control and microcontroller I/O buffering.
For engineers reviewing the DDTC114EE-7 datasheet, DDTC114EE-7 pinout, DDTC114EE-7 application, or DDTC114EE-7 equivalent, key selection criteria include verified input resistor matching (R1/R2 tolerance ±30%), guaranteed turn-on/off voltage windows, thermal derating to 150 mW at +25°C, and SOT523 footprint compatibility with high-density PCB layouts.
Technical Context
This device integrates a monolithic NPN transistor with two matched 10 kΩ base bias resistors (R1 = R2) in a single SOT523 package, eliminating external bias components. Its internal resistor ratio tolerance (0.8–1.2%) ensures consistent switching thresholds across temperature.
It functions as a digital inverter with defined logic-level compatibility: guaranteed OFF state below 1.1 V input and ON state above 1.9 V input at 10 mA load, with VCE(SAT) ≤ 0.3 V and transition frequency fT = 250 MHz - suitable for 1–10 MHz digital signal routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| R1, R2 Nominal Value | 10 kΩ - sets precise base bias current for predictable turn-on at 5 V logic levels |
| Output Current (IO) | 50 mA - supports direct drive of small-signal loads like indicator LEDs or gate inputs |
| VI(OFF) Max | 1.1 V - ensures reliable cutoff when driven by 1.8 V or 3.3 V logic low states |
| VI(ON) Min | 1.9 V - guarantees saturation with standard 3.3 V CMOS/TTL high outputs |
| DC Current Gain (hFE) | 30 - provides stable current amplification under 5 mA collector load at VCE = 5 V |
| Power Dissipation (PD) | 150 mW - defines maximum continuous power handling on FR-4 board with minimum pad layout |
| fT | 250 MHz - enables use in high-speed digital switching up to ~10 MHz without significant delay degradation |
Pinout & Package
SOT523 package: ultra-small surface-mount outline (1.60 × 1.60 × 0.75 mm), 3-terminal plastic-molded case rated UL 94V-0, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Input reference / GND node | Common return path for bias network; connects internally to R2 and transistor emitter |
| 2 (Collector) | Switched output | Active-low output terminal; sinks up to 50 mA when transistor is saturated |
| 3 (Base) | Bias input node | Connects to R1–R2 junction; accepts logic-level input to control transistor conduction |
Key Features
| Feature | Design Value |
|---|---|
| Matched internal bias resistors | R1 = R2 = 10 kΩ ±30% - eliminates external component count and layout variability for digital switch design |
| Guaranteed logic-level compatibility | VI(OFF) ≤ 1.1 V and VI(ON) ≥ 1.9 V - ensures interoperability with 1.8 V, 3.3 V, and 5 V logic families |
| Low saturation voltage | VCE(SAT) ≤ 0.3 V at IC = 10 mA - minimizes power loss and heat generation in always-on or pulsed drive applications |
| High-frequency capability | fT = 250 MHz - supports clean edge transitions in clock distribution and data line buffering |
| AEC-Q101 qualified option | Available with automotive-grade qualification - enables use in infotainment I/O and body electronics where PPAP and IATF 16949 compliance are required |
Applications
| LED Indicator Control | Microcontroller GPIO Buffering |
|---|---|
|
Use Scenario: Driving 20 mA red/green status LEDs from 3.3 V MCU pins with current limiting handled internally. IC Role / Device Role / Timing Role: Digital switch that translates MCU logic-high into LED sink path while maintaining <0.3 V drop. Use Value: Eliminates need for discrete base resistor and collector current-limiting resistor, reducing BOM count by two passive components per channel. |
Use Scenario: Isolating and strengthening weak MCU output signals before driving optocoupler inputs or relay drivers. IC Role / Device Role / Timing Role: Level-shifting buffer with fast turn-on (<100 ns typical propagation) and low output impedance. Use Value: Prevents GPIO loading effects and ensures robust signal integrity across noisy industrial bus lines. |
| Logic-Level Translation | Low-Power Sensor Interface |
|
Use Scenario: Converting 1.8 V I²C pull-up signals to 5 V-compatible open-drain outputs for legacy peripherals. IC Role / Device Role / Timing Role: Active-low translator with defined VI(OFF)/VI(ON) thresholds enabling bidirectional voltage adaptation. Use Value: Maintains timing margins with 250 MHz fT, supporting I²C Fast Mode (400 kHz) without added delay or distortion. |
Use Scenario: Enabling/disabling analog sensor power rails (e.g., temperature or humidity ICs) using MCU-controlled enable lines. IC Role / Device Role / Timing Role: Low-quiescent-current switch (IO(OFF) ≤ 0.5 µA) for rail gating with minimal standby leakage. Use Value: Reduces system sleep current by >95% compared to direct MCU pin control, extending battery life in portable sensors. |
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 |
|---|---|---|---|
| DDTC123EE-7 | R1 = R2 = 2.2 kΩ; higher input current (3.8 mA at 5 V); IO = 100 mA | Better suited for 5 V logic systems requiring faster switching and higher drive strength | Select when driving heavier loads (>50 mA) or interfacing with 5 V TTL; not optimal for 1.8/3.3 V only systems due to higher VI(ON) margin |
| DDTC115EE-7 | R1 = R2 = 100 kΩ; lower input current (0.15 mA at 5 V); IO = 20 mA | Optimized for ultra-low-power microcontroller wake-up circuits and battery-sensitive designs | Choose for sub-1 µA sleep current targets and low-drive applications; avoid where >20 mA load capability is needed |
Compared with DDTC123EE-7 and DDTC115EE-7, DDTC114EE-7 strikes a balance between input sensitivity (10 kΩ bias) and output drive (50 mA), making it ideal for mixed-voltage embedded systems where 3.3 V logic drives moderate-current peripherals without excessive quiescent draw.
Availability
DDTC114EE-7 is available at Aetrix Electronics and suitable for LED indicator control, microcontroller GPIO buffering, and logic-level translation requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for DDTC114EE-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, energy-efficient components for industrial, computing, consumer, and automotive markets.
This part belongs to the DDTC (R1 = R2 Series) pre-biased transistor family, engineered to simplify digital interface design by integrating matched base resistors and guaranteeing switching thresholds across temperature and voltage domains.
FAQ
What is the maximum operating temperature for DDTC114EE-7?
The DDTC114EE-7 is rated for operation from –55°C to +150°C junction temperature. Its thermal resistance (RθJA) is 833°C/W on FR-4 board with minimum recommended pad layout, meaning ambient temperature must be limited to +125°C when dissipating 150 mW continuously.
Can DDTC114EE-7 replace a discrete transistor + two resistors?
Yes - it replaces one NPN transistor and two 10 kΩ base bias resistors in a single SOT523 footprint. The internal R1/R2 match (0.8–1.2% ratio tolerance) and guaranteed VI(OFF)/VI(ON) thresholds eliminate calibration and layout variation, reducing assembly steps and test points.
Is DDTC114EE-7 compliant with automotive standards?
The standard DDTC114EE-7 is not AEC-Q101 qualified, but Diodes offers automotive-grade versions (e.g., DDTC114EE-7Q) with PPAP documentation, IATF 16949 manufacturing, and extended temperature validation - contact Aetrix for qualified part numbers and change-control support.
How does the 10 kΩ bias resistor value affect logic compatibility?
A 10 kΩ bias yields ~0.5 mA input current at 5 V, ensuring reliable turn-on with 3.3 V CMOS outputs while keeping VI(OFF) ≤ 1.1 V to prevent false triggering from noise or leakage - this value balances speed, power, and noise immunity better than 2.2 kΩ (too sensitive) or 100 kΩ (too slow).
DDTC114EE-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Transistor Type:
- NPN - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 10 kOhms
- Resistor - Emitter Base (R2):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 30 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 150 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
DDTC114EE-7 FAQ
1.How can I place an order for DDTC114EE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC114EE-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 DDTC114EE-7 reliable?
The price and inventory of DDTC114EE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTC114EE-7 is usually 5 days.
3.What payment methods are accepted for DDTC114EE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC114EE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC114EE-7?
DDTC114EE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC114EE-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 DDTC114EE-7?
For technical support, including DDTC114EE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC114EE-7 requirements.
6.How does Aetrix verify that DDTC114EE-7 is sourced from the original manufacturer or authorized distributors?
All DDTC114EE-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 DDTC114EE-7 meets industry standards.
7.What is the process for return or replacement of DDTC114EE-7?
All DDTC114EE-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTC114EE-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 DDTC114EE-7 part is unused and in its original packaging.
Return procedure for DDTC114EE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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