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Diodes Incorporated DDTC114ECAQ-7-F
- Part No.:
- DDTC114ECAQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTC114ECAQ-7-F.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,653
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Product details
Overview
DDTC114ECAQ-7-F from Diodes Incorporated is an NPN pre-biased small-signal transistor in SOT23 package, featuring integrated bias resistors R1 = R2 = 10 kΩ, 50 mA output current capability, 0.3 V typical VCE(sat) at IC = 10 mA, and AEC-Q101 qualification for automotive applications such as LED load switching in body control modules.
For engineers reviewing the DDTC114ECAQ-7-F datasheet, DDTC114ECAQ-7-F pinout, DDTC114ECAQ-7-F application, or DDTC114ECAQ-7-F equivalent, key selection criteria include input resistor tolerance (±30%), DC current gain (GL = 35 min at VO = 5 V, IO = 5 mA), thermal resistance (625 °C/W), and automotive-grade reliability compliance.
Technical Context
This device integrates two matched 10 kΩ bias resistors (R1 = R2) to configure a single-NPN digital transistor with fixed base biasing, eliminating external components for logic-level interface. It operates as a saturated switch with guaranteed turn-on at VIN ≥ 1.9 V (typ) and turn-off at VIN ≤ 1.1 V (typ) under standard test conditions.
The SOT23 package enables high-density placement on automotive PCBs, while its 200 mW power dissipation rating and -55°C to +150°C operating range support under-hood environments. Its GL = 35 minimum ensures stable switching performance across temperature and process variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| R1, R2 (Nom) | 10 kΩ - sets fixed base bias ratio for predictable saturation without external resistors |
| IO (Max) | 50 mA - maximum continuous collector current for driving medium-power loads like LEDs or relays |
| VCE(sat) (Typ) | 0.1–0.3 V - low saturation voltage minimizes power loss and self-heating in switching mode |
| GL (Min) | 35 - guaranteed DC current gain ensures reliable on-state drive margin at IO = 5 mA |
| PD | 200 mW - power limit defined for FR4 board with minimum pad layout, constraining thermal design |
| RθJA | 625 °C/W - junction-to-ambient thermal resistance determines max ambient temperature for safe operation |
| VCC (Max) | 50 V - absolute maximum supply voltage defines system rail compatibility up to 48 V automotive systems |
Pinout & Package
Package: SOT23 - surface-mount plastic package with matte tin-plated leads, moisture sensitivity level 1, UL 94V-0 rated molding compound, and 0.008 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal | Reference node for current flow; connected to ground or low-side return path |
| 2 (Base) | Input node via internal R1/R2 network | Accepts logic-level input; internally biased through dual 10 kΩ resistors |
| 3 (Collector) | Output node | Switched high-side output; connects to load and positive supply rail |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors (R1 = R2) | Eliminates need for external base resistors, reducing BOM count and PCB area in digital switching circuits |
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, HTRB, and ESD testing per stress requirements |
| Lead-free & halogen-free | Complies with RoHS 2/3 and automotive green standards (<900 ppm Br/Cl, <1000 ppm Sb) |
| SOT23 footprint | Enables drop-in replacement of discrete transistor + resistor combinations in space-constrained layouts |
Applications
| Automotive Body Control Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Driving LED status indicators and small solenoids in door modules and lighting controllers. IC Role / Device Role / Timing Role: Digital switch translating microcontroller GPIO outputs into load-current paths. Use Value: Reduces component count by integrating biasing network, improving manufacturing yield and long-term reliability in vibration-prone environments. | Use Scenario: Level-shifting and isolation between 3.3 V MCU I/O and 12 V industrial sensors. IC Role / Device Role / Timing Role: Logic-compatible NPN switch enabling clean on/off control without external pull-up or biasing. Use Value: Ensures robust turn-on at 3.3 V logic levels (VIN(on) ≤ 1.9 V typ) while maintaining noise immunity via built-in resistor ratio. |
| Consumer Appliance Control Board | Automotive HVAC Actuator Driver |
Use Scenario: Controlling indicator LEDs and buzzer drivers in smart home appliances. IC Role / Device Role / Timing Role: Low-power saturated switch replacing discrete BJT + resistor pairs in cost-sensitive designs. Use Value: Achieves <0.3 V VCE(sat) at 10 mA, minimizing heat generation and enabling compact thermal design. | Use Scenario: Driving small DC motors and position feedback switches in climate control actuators. IC Role / Device Role / Timing Role: Automotive-grade switching element handling intermittent 50 mA loads with full AEC-Q101 traceability. Use Value: Supports extended temperature range (-55°C to +150°C) and PPAP documentation for OEM production programs. |
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 |
|---|---|---|---|
| DDTC114ECA-7-F | Same die, non-automotive marking; no AEC-Q101 certification or PPAP support | Approved for industrial/commercial use only; not qualified for automotive production | Select when AEC-Q101 compliance is unnecessary and cost optimization is prioritized |
| ADTC114ECAQ-7-F | Successor part with identical electrical specs; replaces NRND DDTC114ECAQ-7-F per Diodes Inc. notice | Direct replacement for new designs requiring continued automotive qualification | Preferred for new automotive designs due to active status and full lifecycle support |
Compared with DDTC114ECAQ-7-F, DDTC114ECA-7-F lacks automotive qualification documentation but offers identical electrical behavior, while ADTC114ECAQ-7-F provides identical performance with assured long-term availability and updated manufacturing controls.
Availability
DDTC114ECAQ-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and consumer appliance control boards requiring stable component supply and AEC-Q101 traceability.
Supply support for DDTC114ECAQ-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, specializing in high-reliability components for automotive, industrial, and computing markets.
The DDTC (R1 = R2 Series) CA product line delivers pre-biased NPN transistors optimized for simplified digital switching in space- and cost-constrained automotive and industrial control applications.
FAQ
Is DDTC114ECAQ-7-F pin-compatible with standard SOT23 NPN transistors?
No - it uses the same SOT23 physical footprint but has internal bias resistors connecting pins 1 (emitter), 2 (base), and 3 (collector) in a fixed configuration. Direct substitution for bare transistors requires circuit redesign to remove external base resistors.
What does the "Q" suffix indicate in DDTC114ECAQ-7-F?
The "Q" suffix denotes automotive qualification per AEC-Q101 standards and PPAP capability. It reflects enhanced screening, traceability, and documentation required for Tier 1 automotive supply chains, distinct from commercial-grade variants like DDTC114ECA-7-F.
Can DDTC114ECAQ-7-F be used in 24 V industrial systems?
Yes - its 50 V VCC rating supports operation in 24 V systems with margin. However, maximum output current drops to 50 mA, and thermal design must account for power dissipation at elevated ambient temperatures using the specified 625 °C/W RθJA.
Why is DDTC114ECAQ-7-F marked NRND in Diodes' ordering table?
Diodes Inc. lists DDTC114ECAQ-7-F as Not Recommended for New Design because it has been superseded by ADTC114ECAQ-7-F. The original remains available for legacy program support but is not promoted for new automotive designs due to updated manufacturing and qualification processes.
DDTC114ECAQ-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:
- Active
- 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:
- 35 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- 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-23-3
DDTC114ECAQ-7-F FAQ
1.How can I place an order for DDTC114ECAQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC114ECAQ-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 DDTC114ECAQ-7-F reliable?
The price and inventory of DDTC114ECAQ-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 DDTC114ECAQ-7-F is usually 5 days.
3.What payment methods are accepted for DDTC114ECAQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC114ECAQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC114ECAQ-7-F?
DDTC114ECAQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC114ECAQ-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 DDTC114ECAQ-7-F?
For technical support, including DDTC114ECAQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC114ECAQ-7-F requirements.
6.How does Aetrix verify that DDTC114ECAQ-7-F is sourced from the original manufacturer or authorized distributors?
All DDTC114ECAQ-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 DDTC114ECAQ-7-F meets industry standards.
7.What is the process for return or replacement of DDTC114ECAQ-7-F?
All DDTC114ECAQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTC114ECAQ-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 DDTC114ECAQ-7-F part is unused and in its original packaging.
Return procedure for DDTC114ECAQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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