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Diodes Incorporated DDTC115EUA-7
- Part No.:
- DDTC115EUA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
DDTC115EUA-7.pdf
- Description:
- TRANS PREBIAS NPN 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
DDTC115EUA-7 from Diodes Incorporated is an NPN pre-biased small-signal transistor in SOT323 package, featuring integrated bias resistors R1 = R2 = 100 kΩ, VCEO = 50 V, IC(MAX) = 20 mA, and DC current gain (hFE) ≥ 82 at IC = 5 mA, VCE = 5 V. It is AEC-Q101 qualified and used in automotive logic-level interface circuits for microcontroller I/O buffering.
For engineers reviewing the DDTC115EUA-7 datasheet, DDTC115EUA-7 pinout, DDTC115EUA-7 application, or DDTC115EUA-7 equivalent, key selection criteria include input voltage thresholds (VIN(ON) = 1.4–3.0 V), output saturation voltage (VCE(SAT) ≤ 0.3 V at IC/IB = 5 mA/0.25 mA), resistor tolerance (±30%), and AEC-Q101 qualification status for automotive signal conditioning.
Technical Context
This device integrates two matched 100 kΩ bias resistors (R1 = R2) to configure a single-NPN inverter with fixed base biasing, eliminating external components for digital switching. Its design targets low-power, high-reliability level-shifting and signal inversion in 3.3 V/5 V logic domains.
The SOT323 package enables compact placement on space-constrained PCBs while maintaining thermal resistance (RθJA = 625 °C/W) suitable for ambient temperatures from –55 °C to +150 °C. Electrical behavior is characterized by VIN(OFF) ≤ 1.1 V and VIN(ON) ≥ 1.4 V under defined load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; supports 3.3 V/5 V rail operation with margin. |
| IC(MAX) | 20 mA - Absolute maximum continuous collector current; defines upper limit for load-driving capability. |
| R1 = R2 | 100 kΩ ±30% - Matched internal base bias resistors enabling self-biased inverter operation without external components. |
| hFE | ≥82 at IC = 5 mA, VCE = 5 V - Confirmed DC current gain ensures reliable saturation under typical microcontroller drive conditions. |
| VCE(SAT) | ≤0.3 V at IC/IB = 5 mA/0.25 mA - Low saturation voltage minimizes power loss and ensures clean logic-low output. |
| VIN(ON) | 1.4–3.0 V - Input voltage range guaranteeing turn-on across process/voltage/temperature variation; compatible with TTL and CMOS logic thresholds. |
| PD | 200 mW - Maximum power dissipation on FR-4 board; constrains thermal design in dense layouts. |
Pinout & Package
SOT323 surface-mount package: 3-pin, ultra-small outline transistor case with matte tin-plated leads, moisture sensitivity level 1, and UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal | Reference node for current sink operation; connected to ground or low-side return path in inverter configuration. |
| 2 (Base) | Base connection point | Internally tied to R1 and R2 junction; accepts input signal and sets bias point via dual-resistor network. |
| 3 (Collector) | Collector terminal | Output node delivering inverted logic signal; sourced from VCC through external pull-up or directly drives downstream logic input. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 = R2 bias network | 100 kΩ matched resistors eliminate need for external base bias components, reducing BOM count and layout area. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and body electronics requiring high reliability. |
| Green, halogen-free construction | Meets RoHS 2/3 and JEDEC J-STD-020 Level 1 standards; supports environmentally compliant manufacturing and end-of-life handling. |
| Low VCE(SAT) at low IB | 0.3 V max at IC/IB = 5 mA/0.25 mA enables efficient switching with minimal voltage drop in battery-powered systems. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Interface |
|---|---|
Use Scenario: Level-shifting 3.3 V MCU GPIO signals to drive 12 V lamp control lines in vehicle door modules. IC Role / Device Role / Timing Role: Inverting buffer with built-in biasing, converting logic-high to grounded output for N-channel load switch activation. Use Value: Eliminates discrete resistor pair, reduces PCB footprint by >40%, and ensures consistent turn-on threshold across temperature (-40 °C to +125 °C). |
Use Scenario: Converting 24 V industrial sensor outputs to 3.3 V logic levels for ARM-based controller inputs. IC Role / Device Role / Timing Role: High-impedance input stage with clamped input voltage (VIN ≤ 40 V), providing robust isolation against field-wiring transients. Use Value: Withstands 40 V input peaks and delivers <0.5 µA leakage in OFF state, improving noise immunity in electrically noisy factory environments. |
| Consumer Appliance Microcontroller I/O Expander | Medical Diagnostic Equipment Signal Conditioning |
Use Scenario: Driving LED indicators and buzzer drivers from low-current MCU pins in smart home thermostats. IC Role / Device Role / Timing Role: Single-transistor inverter with guaranteed 20 mA sink capability, replacing discrete BJT + two-resistor solutions. Use Value: Reduces component count per channel from three to one, lowering assembly cost and increasing long-term reliability in unattended devices. |
Use Scenario: Isolating analog front-end trigger signals from digital processing units in portable ultrasound units. IC Role / Device Role / Timing Role: Fast-switching interface (fT = 250 MHz) with sub-100 ns propagation delay, preserving timing integrity of pulse-width modulated triggers. Use Value: Maintains signal fidelity during rapid transitions while meeting IEC 60601 creepage/clearance requirements via SOT323 spacing. |
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 |
|---|---|---|---|
| DDTC114EUA-7-F | R1 = R2 = 10 kΩ; higher input current (0.88 mA at VIN = 5 V); lower hFE (≥30) | Better suited for higher-speed switching where faster turn-on is required, but less tolerant of weak drive sources | Select when driving from high-impedance sources or needing faster response than DDTC115EUA-7 allows |
| NSVD115EWT1G | Same R1 = R2 = 100 kΩ, but rated for 100 mA IC(MAX); larger SOT-523 package; no AEC-Q101 qualification | Supports higher-current loads (e.g., relay coils) but lacks automotive qualification and has larger footprint | Choose for non-automotive industrial use cases requiring higher output current without qualification overhead |
Compared with DDTC115EUA-7, DDTC114EUA-7-F offers faster switching at the expense of higher input loading, while NSVD115EWT1G trades AEC-Q101 compliance and miniaturization for increased current capacity-making each optimal for distinct system-level trade-offs in drive strength, qualification, and size.
Availability
DDTC115EUA-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and medical diagnostic equipment requiring stable component supply and AEC-Q101-compliant discrete transistors.
Supply support for DDTC115EUA-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 consumer markets.
The DDTC series targets cost-sensitive, space-constrained digital interface applications requiring pre-biased transistors with AEC-Q101 qualification and green packaging-designed specifically for automotive signal conditioning and logic-level translation.
FAQ
What is the maximum input voltage the DDTC115EUA-7 can tolerate?
The DDTC115EUA-7 supports input voltages from –10 V to +40 V, as specified in its absolute maximum ratings table. This range accommodates transient overvoltage events common in automotive 12 V systems and industrial 24 V interfaces, provided the input is referenced to emitter (pin 1) and does not exceed the 50 V VCEO limit between collector and emitter.
Does the DDTC115EUA-7 require external bias resistors?
No. The DDTC115EUA-7 integrates two 100 kΩ bias resistors (R1 = R2) internally, forming a complete pre-biased NPN inverter circuit. No external resistors are needed for basic switching operation, simplifying schematic design and reducing PCB real estate versus discrete BJT + resistor implementations.
Is the DDTC115EUA-7 suitable for high-frequency signal switching?
Yes. With a gain-bandwidth product (fT) of 250 MHz, the DDTC115EUA-7 supports switching frequencies up to several tens of MHz in small-signal applications. However, its 20 mA IC(MAX) and 200 mW power dissipation constrain sustained high-speed operation under heavy load conditions.
How does the AEC-Q101 qualification impact usage in non-automotive designs?
AEC-Q101 qualification confirms extended temperature operation (–55 °C to +150 °C), enhanced reliability testing (e.g., HTOL, TC), and robustness against mechanical stress-benefiting any mission-critical industrial or medical application. It does not restrict use outside automotive; rather, it provides assurance of performance under harsh environmental conditions.
DDTC115EUA-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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):
- 100 kOhms
- Resistor - Emitter Base (R2):
- 100 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 82 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 250µA, 5mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 200 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
DDTC115EUA-7 FAQ
1.How can I place an order for DDTC115EUA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC115EUA-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 DDTC115EUA-7 reliable?
The price and inventory of DDTC115EUA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTC115EUA-7 is usually 5 days.
3.What payment methods are accepted for DDTC115EUA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC115EUA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC115EUA-7?
DDTC115EUA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC115EUA-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 DDTC115EUA-7?
For technical support, including DDTC115EUA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC115EUA-7 requirements.
6.How does Aetrix verify that DDTC115EUA-7 is sourced from the original manufacturer or authorized distributors?
All DDTC115EUA-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 DDTC115EUA-7 meets industry standards.
7.What is the process for return or replacement of DDTC115EUA-7?
All DDTC115EUA-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTC115EUA-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 DDTC115EUA-7 part is unused and in its original packaging.
Return procedure for DDTC115EUA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDTC115EUA-7 Tags
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MUN5211T1G
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