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Diodes Incorporated DDTC114EUA-7
- Part No.:
- DDTC114EUA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- -
- Datasheet:
-
DDTC114EUA-7.pdf
- Description:
- TRANS PREBIAS NPN 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:1,213
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Product details
Overview
DDTC114EUA-7 from Diodes Incorporated is an NPN pre-biased small-signal transistor in SOT323 package, featuring integrated bias resistors R1 = R2 = 10 kΩ, VCEO = 50 V, IC(MAX) = 50 mA, and DC current gain (hFE) ≥ 30 at IC = 5 mA. It operates across –55°C to +150°C and is AEC-Q101 qualified for automotive signal switching applications.
For engineers reviewing the DDTC114EUA-7 datasheet, DDTC114EUA-7 pinout, DDTC114EUA-7 application, or DDTC114EUA-7 equivalent, key selection criteria include input voltage thresholds (VIN(OFF) ≤ 1.1 V, VIN(ON) ≥ 1.9 V), output saturation voltage (VCE(SAT) ≤ 0.3 V @ IC/IB = 10 mA/0.5 mA), built-in resistor matching (R2/R1 = 0.8–1.2), and thermal resistance (RθJA = 625 °C/W).
Technical Context
This device integrates two matched 10 kΩ bias resistors (R1 = R2) to configure a single-NPN inverter with fixed base biasing-eliminating external components for digital logic level translation and low-side switching. Its SOT323 footprint supports high-density PCB layouts while maintaining thermal performance up to 200 mW power dissipation under JEDEC-standard FR-4 mounting.
The transistor delivers guaranteed hFE ≥ 30 at IC = 5 mA and VCE = 5 V, with VCE(SAT) ≤ 0.3 V under IC/IB = 10 mA/0.5 mA conditions. Input voltage thresholds are specified across temperature: VIN(OFF) ≤ 1.1 V ensures reliable turn-off at 5 V supply, while VIN(ON) ≥ 1.9 V enables robust TTL/CMOS-compatible activation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; supports 24 V industrial bus interfacing with margin. |
| IC(MAX) | 50 mA - Continuous collector current rating; suitable for driving LEDs, small relays, or logic inputs. |
| R1, R2 | 10 kΩ ±30% - Matched internal base bias resistors enabling single-resistor-free inverter configuration. |
| hFE | ≥30 @ IC = 5 mA - Minimum DC current gain ensures stable saturation under defined drive conditions. |
| VCE(SAT) | ≤0.3 V @ IC/IB = 10 mA/0.5 mA - Low saturation voltage minimizes power loss in switching mode. |
| TJ Range | –55°C to +150°C - Extended junction temperature range validated per AEC-Q101 for under-hood automotive use. |
Pinout & Package
Package: SOT323 - ultra-small surface-mount plastic package (2.15 mm × 2.10 mm × 0.95 mm), RoHS-compliant, halogen-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal | Reference node for current sink operation; connected to ground or low-side return path. |
| 2 (Base) | Input node via R1–R2 network | Internal connection point between R1 (to pin 3) and R2 (to pin 1); no external access. |
| 3 (Collector) | Output collector | Switched high-side output node; sinks load current when transistor is active. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 = R2 bias network | 10 kΩ matched resistors eliminate external base resistors for inverter function. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
| SOT323 footprint | 0.65 mm pitch, 2.15 mm × 2.10 mm body - enables compact routing in space-constrained modules. |
| Green compound & lead-free | UL 94V-0 rated molding, <900 ppm Br/Cl, <1000 ppm Sb - compliant with global environmental directives. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
Use Scenario: Level-shifting 3.3 V microcontroller GPIO to switch 12 V solenoid drivers in door lock actuation circuits. IC Role / Device Role / Timing Role: NPN inverter providing galvanically isolated, resistorless low-side switching with fast turn-on/off. Use Value: Eliminates two external resistors per channel, reducing BOM count and PCB area while meeting AEC-Q101 vibration/thermal requirements. |
Use Scenario: Converting 24 V field sensor signals to 5 V logic levels for FPGA-based I/O expansion cards. IC Role / Device Role / Timing Role: Signal conditioning transistor acting as a voltage-controlled current sink for optocoupler input stages. Use Value: Guaranteed VIN(OFF) ≤ 1.1 V ensures noise immunity against 24 V transients; VCE(SAT) ≤ 0.3 V maintains low power dissipation at 10 mA load. |
| Consumer Appliance Motor Driver | Medical Diagnostic Equipment Interface |
Use Scenario: Driving small brushed DC fan motors in smart HVAC control units using MCU PWM outputs. IC Role / Device Role / Timing Role: Low-side PWM switch controlling motor current with minimal gate drive overhead. Use Value: 50 mA IC rating and 30+ hFE ensure full saturation at 5 kHz PWM frequencies without external base drive circuitry. |
Use Scenario: Isolating microcontroller I/O pins from analog front-end multiplexer enable lines in portable ultrasound systems. IC Role / Device Role / Timing Role: Digital buffer stage preventing backfeed into sensitive analog sections during power sequencing. Use Value: –55°C to +150°C operating range supports sterilization cycles and extended battery-powered operation without derating. |
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 |
|---|---|---|---|
| DDTC114YKA-7 | SOT23 package (3.0 mm × 1.4 mm), same R1=R2=10 kΩ, but higher IC(MAX)=100 mA and hFE ≥ 56. | Supports higher current loads (e.g., larger relays); less suitable for ultra-dense layouts due to larger footprint. | Select when >50 mA load current or higher gain stability is required; verify PCB pad compatibility. |
| NSV114EUT1G | Same SOT323 package, R1=R2=10 kΩ, but lower VCEO=40 V and hFE ≥ 20 (min). | Not AEC-Q101 qualified; intended for commercial-grade consumer electronics only. | Choose for cost-sensitive non-automotive designs where 40 V rating suffices and qualification is not mandated. |
Compared with DDTC114YKA-7, the DDTC114EUA-7 offers superior board-area efficiency in space-constrained automotive modules, while NSV114EUT1G provides a lower-cost alternative where AEC-Q101 compliance and 50 V rating are unnecessary.
Availability
DDTC114EUA-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC digital inputs, and medical diagnostic equipment interfaces requiring stable component supply and AEC-Q101 traceability.
Supply support for DDTC114EUA-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 automotive, industrial, and computing markets.
The DDTC series belongs to Diodes' pre-biased transistor product line, engineered specifically for simplified digital interface design-reducing external component count while maintaining AEC-Q101 compliance and thermal robustness in harsh environments.
FAQ
What is the maximum continuous collector current for DDTC114EUA-7?
The DDTC114EUA-7 is rated for a maximum continuous collector current (IC) of 50 mA at TA = +25°C. Derating applies above 25°C ambient, with full 50 mA supported up to ~70°C on standard FR-4 PCB per the thermal resistance (RθJA = 625 °C/W) and power dissipation (PD = 200 mW) limits.
Does DDTC114EUA-7 require external base resistors?
No. The device integrates two matched 10 kΩ bias resistors (R1 = R2) internally, forming a complete NPN inverter circuit. Only the input signal (applied to pin 3), output load (connected to pin 3), and emitter reference (pin 1) are needed-no external resistors are required for basic switching operation.
Is DDTC114EUA-7 suitable for automotive applications?
Yes. DDTC114EUA-7 is AEC-Q101 qualified and PPAP-capable, with full test documentation for temperature cycling, HTRB, and ESD. Its –55°C to +150°C operating range, green RoHS-compliant construction, and SOT323 package make it appropriate for under-hood and cabin control modules.
How does the input voltage threshold behave across temperature?
VIN(OFF) remains ≤ 1.1 V and VIN(ON) stays ≥ 1.9 V over the full –55°C to +150°C junction range, ensuring consistent logic-level recognition in automotive and industrial environments. These values are guaranteed at VCC = 5 V and specified load conditions per the DS30321 datasheet.
DDTC114EUA-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:
- -
DDTC114EUA-7 FAQ
1.How can I place an order for DDTC114EUA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC114EUA-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 DDTC114EUA-7 reliable?
The price and inventory of DDTC114EUA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTC114EUA-7 is usually 5 days.
3.What payment methods are accepted for DDTC114EUA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC114EUA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC114EUA-7?
DDTC114EUA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC114EUA-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 DDTC114EUA-7?
For technical support, including DDTC114EUA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC114EUA-7 requirements.
6.How does Aetrix verify that DDTC114EUA-7 is sourced from the original manufacturer or authorized distributors?
All DDTC114EUA-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 DDTC114EUA-7 meets industry standards.
7.What is the process for return or replacement of DDTC114EUA-7?
All DDTC114EUA-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTC114EUA-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 DDTC114EUA-7 part is unused and in its original packaging.
Return procedure for DDTC114EUA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDTC114EUA-7 Tags
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