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Diodes Incorporated DDTC114WUA-7
- Part No.:
- DDTC114WUA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
DDTC114WUA-7.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,746
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Product details
Overview
DDTC114WUA-7 from Diodes Incorporated is a 50V NPN pre-biased transistor in SOT323 package with integrated R1 = 10kΩ and R2 = 4.7kΩ bias resistors, designed for digital switching applications requiring low-input-current drive and guaranteed saturation at IC = 10mA. It delivers VIN(on) = 3.0V (at VOUT = 0.3V), DC current gain (hFE) = 24, and PD = 200mW, commonly used in LED driver logic interfaces and microcontroller GPIO load switching.
For engineers reviewing the DDTC114WUA-7 datasheet, DDTC114WUA-7 pinout, DDTC114WUA-7 application, or DDTC114WUA-7 equivalent, key selection criteria include input voltage threshold, output saturation voltage, built-in resistor ratio tolerance (±20%), thermal resistance (625°C/W), and automotive-grade availability via AEC-Q101 qualification path.
Technical Context
This device integrates an NPN transistor with two discrete on-die biasing resistors (R1 = 10kΩ, R2 = 4.7kΩ) to eliminate external base components and ensure predictable turn-on/turn-off behavior. Its R1 ≠ R2 architecture enables asymmetric biasing for optimized switching speed and reduced input drive requirements.
The SOT323 package supports high-density PCB layouts and automated reflow assembly, while its 625°C/W junction-to-ambient thermal resistance requires careful trace width and copper pour design for sustained 100mA peak output operation. The device operates across –55°C to +150°C, meeting industrial and automotive ambient requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50V - Maximum collector-emitter voltage before breakdown; sets upper rail limit for 3.3V/5V logic-level switching circuits. |
| R1 / R2 | 10kΩ / 4.7kΩ - Asymmetric internal bias network enabling stable saturation at low IB; eliminates need for external base resistor. |
| VIN(on) | 3.0V @ IC = 2mA - Guaranteed turn-on threshold compatible with 3.3V CMOS outputs without level-shifting. |
| VCE(sat) | 0.3V max @ IC = 10mA - Low saturation voltage minimizes power loss in high-duty-cycle switching loads like indicator LEDs. |
| hFE | 24 min @ VCE = 5V, IC = 10mA - Confirmed DC current gain ensures reliable forced β operation under defined bias conditions. |
| PD | 200mW - Power dissipation limit at TA = 25°C; derates linearly above 25°C per 625°C/W thermal resistance. |
| fT | 250MHz - Small-signal transition frequency confirms suitability for <10MHz digital switching, not RF amplification. |
Pinout & Package
Package: SOT323 - ultra-small surface-mount plastic package (2.15mm × 2.10mm × 0.95mm), moisture sensitivity level 1, matte tin-plated leads, UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Transistor emitter terminal | Connected internally to R2; provides return path for output current and defines common reference for bias network. |
| 2 (Base) | Transistor base node | Internal connection point between R1 and R2; accepts input signal and sets base current via R1–R2 divider. |
| 3 (Collector) | Transistor collector terminal | High-side switch output node; carries full load current (up to 100mA) when saturated; electrically isolated from bias resistors. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1/R2 bias network | Eliminates 2 external resistors; reduces BOM count and layout area while guaranteeing consistent biasing across temperature. |
| SOT323 footprint | Enables >2× higher board density vs. SOT23; compatible with standard 0.65mm pitch reflow profiles and AOI inspection. |
| Lead-free & halogen-free | Meets RoHS 3 (2015/863/EU) and JEDEC J-STD-020 Level 1; no bromine/chlorine/antimony restrictions impact reliability or solderability. |
| Guaranteed VIN(on) | 3.0V max ensures robust turn-on with 3.3V microcontrollers even under worst-case VCC droop or temperature drift. |
Applications
| LED Indicator Driver | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving status LEDs from low-current MCU pins in space-constrained consumer electronics. IC Role / Device Role / Timing Role: Digital switch that translates 3.3V GPIO logic into 20mA LED current with minimal external components. Use Value: Reduces component count by two resistors per channel and guarantees VCE(sat) ≤ 0.3V to maximize LED forward voltage margin. | Use Scenario: Adding discrete output capability to resource-limited microcontrollers in industrial sensor nodes. IC Role / Device Role / Timing Role: Level-shifted, current-boosted buffer for driving relays, buzzers, or optocouplers from 3.3V logic. Use Value: Enables 100mA peak sink capability without external base drive circuitry, simplifying firmware control timing. |
| Automotive Body Control Module | USB Port Power Switch |
Use Scenario: Controlling interior lighting or door lock actuators in AEC-Q101 qualified systems. IC Role / Device Role / Timing Role: Pre-biased NPN switch operating within –40°C to +125°C ambient, supporting PPAP documentation. Use Value: Delivers guaranteed R1/R2 ratio tolerance (±20%) and 150°C max junction temperature for long-term reliability in engine bay proximity. | Use Scenario: Enabling/disabling VBUS power to downstream USB peripherals in portable devices. IC Role / Device Role / Timing Role: Low-leakage (IOUT(off) ≤ 0.5μA) enable switch placed between USB power rail and load. Use Value: Minimizes standby current drain while maintaining fast turn-on (<100ns propagation delay implied by fT = 250MHz). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar pre-biased NPN transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DDTC114YUA-7-F | R2 = 47kΩ (vs. 4.7kΩ); higher VIN(on) = 1.4V; lower IIN = 0.88mA at VIN = 5V | Better suited for high-impedance, low-power logic interfaces where drive current must be minimized | Select when lower input loading is critical and higher turn-on voltage is acceptable |
| DDTC143XUA-7-F | R1 = 4.7kΩ, R2 = 10kΩ; VIN(on) = 2.5V; hFE = 30; higher input current (1.8mA at VIN = 5V) | Optimized for faster switching in 5V systems with stronger drive sources | Select when 5V logic compatibility and higher gain are prioritized over 3.3V margin |
Compared with DDTC114YUA-7-F and DDTC143XUA-7-F, DDTC114WUA-7 offers the lowest R2 value in the 10kΩ R1 family, delivering the strongest base drive for guaranteed saturation at 3.3V inputs-making it optimal for marginal-voltage GPIO applications where VCE(sat) stability is critical.
Availability
DDTC114WUA-7 is available at Aetrix Electronics and suitable for LED indicator drivers, microcontroller GPIO expanders, and USB port power switches requiring stable component supply, consistent SOT323 packaging, and RoHS-compliant manufacturing.
Supply support for DDTC114WUA-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 North America.
The DDTC series belongs to Diodes' pre-biased transistor product line, engineered specifically for reducing component count and improving consistency in digital switching applications across consumer, industrial, and automotive end markets.
FAQ
What is the maximum continuous collector current for DDTC114WUA-7?
The absolute maximum rated collector current is 100mA, but the recommended continuous DC output current is 70mA per the Electrical Characteristics table. This limit ensures safe operation within the 200mW power dissipation rating at 25°C ambient, accounting for thermal derating above that temperature using the 625°C/W RθJA.
Does DDTC114WUA-7 require an external base resistor?
No. DDTC114WUA-7 integrates both R1 (10kΩ) and R2 (4.7kΩ) bias resistors internally, eliminating the need for any external base resistor. The device is designed for direct connection between a logic source (e.g., MCU GPIO) and the base terminal (Pin 2), with emitter (Pin 1) grounded and collector (Pin 3) connected to the load.
Is DDTC114WUA-7 qualified for automotive applications?
DDTC114WUA-7 itself is not pre-qualified to AEC-Q101, but Diodes Incorporated offers automotive-grade variants of the DDTC series (e.g., DDTC114WUAQ-7) with PPAP documentation, IATF 16949 manufacturing, and full AEC-Q101 stress testing. Customers requiring automotive qualification should contact Diodes or Aetrix for the Q-grade part number and certification reports.
How does the R1/R2 ratio affect switching performance?
The R1/R2 ratio of 2.13:1 (10kΩ/4.7kΩ) establishes a fixed base current path that ensures sufficient IB to drive IC = 10mA with hFE ≥ 24, guaranteeing hard saturation (VCE(sat) ≤ 0.3V). This ratio balances input sensitivity and output drive strength-lower R2 increases base current and improves saturation margin but raises input current consumption.
DDTC114WUA-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):
- 10 kOhms
- Resistor - Emitter Base (R2):
- 4.7 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 24 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
DDTC114WUA-7 FAQ
1.How can I place an order for DDTC114WUA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC114WUA-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 DDTC114WUA-7 reliable?
The price and inventory of DDTC114WUA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTC114WUA-7 is usually 5 days.
3.What payment methods are accepted for DDTC114WUA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC114WUA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC114WUA-7?
DDTC114WUA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC114WUA-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 DDTC114WUA-7?
For technical support, including DDTC114WUA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC114WUA-7 requirements.
6.How does Aetrix verify that DDTC114WUA-7 is sourced from the original manufacturer or authorized distributors?
All DDTC114WUA-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 DDTC114WUA-7 meets industry standards.
7.What is the process for return or replacement of DDTC114WUA-7?
All DDTC114WUA-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTC114WUA-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 DDTC114WUA-7 part is unused and in its original packaging.
Return procedure for DDTC114WUA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDTC114WUA-7 Tags
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MUN5211T1G
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