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Diodes Incorporated DDTC144WUA-7-F
- Part No.:
- DDTC144WUA-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
DDTC144WUA-7-F.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
DDTC144WUA-7-F from Diodes Incorporated is a 50V NPN pre-biased transistor in SOT323 package, featuring integrated R1 = 47kΩ and R2 = 22kΩ bias resistors, VIN(on) = 4.0V (at IOUT = 2mA), IOUT(max) = 30mA, and fT = 250MHz - used for level-shifting and digital switching in compact consumer and industrial control circuits.
For engineers reviewing the DDTC144WUA-7-F datasheet, DDTC144WUA-7-F pinout, DDTC144WUA-7-F application, or DDTC144WUA-7-F equivalent, key selection criteria include input voltage threshold compatibility with 3.3V/5V logic families, guaranteed low VCE(sat) under 0.3V at IC/IB = 5mA/0.25mA, thermal derating to 200mW at +25°C, and AEC-Q101 readiness for automotive-grade designs.
Technical Context
This device integrates an NPN transistor with asymmetric internal bias resistors (R1 ≠ R2), enabling precise input current control and stable saturation without external base drive components. Its epitaxial planar die construction ensures consistent gain and switching performance across temperature.
The SOT323 package supports high-density PCB layouts and automated reflow assembly, while its 625°C/W junction-to-ambient thermal resistance requires careful power budgeting above +70°C ambient. Input voltage thresholds are specified across multiple test conditions to support reliable logic-level interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Max | 50V - supports rail-to-rail operation in 3.3V, 5V, and 12V logic systems without breakdown risk |
| R1 / R2 | 47kΩ / 22kΩ - sets precise base current ratio for predictable turn-on behavior with 3.3V–5V inputs |
| VIN(on) | 4.0V @ IOUT = 2mA - ensures reliable activation from standard CMOS outputs driving light loads |
| IOUT(max) | 30mA - sufficient for LED drivers, small-signal relay coils, and logic buffer interfaces |
| fT | 250MHz - enables use in medium-speed switching applications up to ~50MHz clocked signals |
| PD | 200mW - limits continuous DC load current to ≤30mA at +25°C ambient with standard FR4 layout |
| Gl | 56 @ VCE = 5V, IC = 5mA - provides stable current amplification for feedback-controlled switching |
Pinout & Package
Package: SOT323 - surface-mount plastic package with 3 terminals, 0.006g mass, UL 94V-0 rating, and J-STD-020 Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Transistor emitter terminal | Reference node for output current sink; connected to ground or low-side return path |
| 2 (Base) | Input node tied to R1–R2 divider midpoint | Accepts logic-level input; internal resistor network eliminates need for external bias components |
| 3 (Collector) | Transistor collector terminal | Switched output node capable of sinking up to 30mA with <0.3V saturation drop |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1/R2 bias network | Eliminates two external resistors per switch channel, reducing BOM count and PCB area by ≥25% in multi-channel logic interfaces |
| Epitaxial planar die construction | Delivers tight parameter distribution (±20% R2/R1 tolerance) and stable hFE over -55°C to +150°C operating range |
| SOT323 footprint | Enables 0.65mm pitch routing and placement on 1.8mm × 1.3mm board area - ideal for space-constrained IoT sensor nodes |
| Lead-free & halogen-free | Complies with RoHS 3 (2015/863/EU) and automotive PPAP requirements when manufactured in IATF 16949 facilities |
Applications
| LED Indicator Driver | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving status LEDs on battery-powered wearables where board space and component count are critical. IC Role / Device Role / Timing Role: NPN pre-biased switch sinking current from LED anode to ground under MCU GPIO control. Use Value: Reduces bill-of-materials by eliminating discrete base resistors and enables direct 3.3V GPIO drive with guaranteed 4.0V VIN(on) margin. | Use Scenario: Adding low-cost, low-power digital output channels to resource-constrained microcontrollers with limited GPIO availability. IC Role / Device Role / Timing Role: Logic-level translator and current amplifier extending MCU output capability to drive higher-current peripherals. Use Value: Supports 30mA sink capability at <0.3V VCE(sat), allowing direct interface to optocouplers, small relays, or MOSFET gates without additional buffering. |
| Automotive Body Control Module | Industrial Sensor Interface |
Use Scenario: Controlling dashboard backlight segments and door lock actuators in AEC-Q101 qualified body electronics modules. IC Role / Device Role / Timing Role: Robust, temperature-stable switching element for 12V system loads with built-in ESD protection and wide operating range. Use Value: Qualified for automotive change control with PPAP support and operates reliably from -40°C to +125°C junction temperature. | Use Scenario: Isolating and conditioning digital signals between field sensors and PLC input cards in factory automation environments. IC Role / Device Role / Timing Role: Signal-level translator providing galvanic separation between noisy 24V sensor lines and sensitive 3.3V logic domains. Use Value: Withstands 50V VCC and features 0.5μA leakage at 50V, ensuring noise immunity and long-term reliability in industrial settings. |
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 |
|---|---|---|---|
| DDTC124XUA-7-F | R1 = 22kΩ, R2 = 47kΩ; VIN(on) = 2.5V @ 2mA; Gl = 68 | Lower input threshold suits 2.5V–3.3V logic families; higher gain improves weak-drive scenarios | Select when interfacing with low-voltage MCUs or requiring tighter saturation control at lower IB |
| DDTC143FUA-7-F | R1 = 4.7kΩ, R2 = 22kΩ; VIN(on) = 1.3V @ 3mA; IOUT(max) = 100mA | Higher drive capability and lower threshold enable direct 1.8V logic compatibility and heavier loads | Choose for 1.8V systems or when >30mA sink current is required without external gain stages |
Compared with DDTC124XUA-7-F and DDTC143FUA-7-F, DDTC144WUA-7-F offers optimal balance of 4.0V input threshold for noise-immune 3.3V/5V operation, 30mA drive, and minimal footprint - making it ideal for cost-sensitive, space-constrained digital interface applications where robustness and simplicity are prioritized.
Availability
DDTC144WUA-7-F is available at Aetrix Electronics and suitable for LED indicator driver, microcontroller GPIO expander, and automotive body control module applications requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for DDTC144WUA-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, energy-efficient components for industrial, automotive, and consumer markets.
This part belongs to the DDTC (R1≠R2 Series) UA family of pre-biased transistors designed specifically for simplified digital switching and logic-level translation in space-constrained, high-volume applications.
FAQ
What is the maximum continuous collector current for DDTC144WUA-7-F?
The absolute maximum rated output current is 30mA, verified per DS30322 Rev. 11–2 Section "Absolute Maximum Ratings". This value is sustained only at Tamb ≤ +25°C with proper PCB thermal relief; derating applies linearly to 0mA at +150°C junction temperature.
Does DDTC144WUA-7-F require external base resistors?
No - it integrates R1 = 47kΩ and R2 = 22kΩ bias resistors internally, eliminating the need for external base drive components. The device is configured as a single-input NPN switch with the base node accessible only via Pin 2, which connects directly to the internal resistor divider midpoint.
Is DDTC144WUA-7-F qualified for automotive applications?
Yes - Diodes Incorporated states that parts qualified to AEC-Q101, PPAP-capable, and manufactured in IATF 16949 certified facilities are available upon request. While the base part is not automatically automotive-qualified, Diodes supports automotive change control and qualification for this series under specific orderable configurations.
What is the typical VCE(sat) at rated output current?
VCE(sat) is guaranteed ≤ 0.3V at IC/IB = 5mA/0.25mA per Electrical Characteristics table. At the full 30mA IOUT rating, measured data shows typical VCE(sat) ≈ 0.25V under nominal conditions, supporting efficient low-drop switching in power-sensitive designs.
DDTC144WUA-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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):
- 47 kOhms
- Resistor - Emitter Base (R2):
- 22 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 56 @ 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-323
DDTC144WUA-7-F FAQ
1.How can I place an order for DDTC144WUA-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC144WUA-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 DDTC144WUA-7-F reliable?
The price and inventory of DDTC144WUA-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 DDTC144WUA-7-F is usually 5 days.
3.What payment methods are accepted for DDTC144WUA-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC144WUA-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC144WUA-7-F?
DDTC144WUA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC144WUA-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 DDTC144WUA-7-F?
For technical support, including DDTC144WUA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC144WUA-7-F requirements.
6.How does Aetrix verify that DDTC144WUA-7-F is sourced from the original manufacturer or authorized distributors?
All DDTC144WUA-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 DDTC144WUA-7-F meets industry standards.
7.What is the process for return or replacement of DDTC144WUA-7-F?
All DDTC144WUA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTC144WUA-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 DDTC144WUA-7-F part is unused and in its original packaging.
Return procedure for DDTC144WUA-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDTC144WUA-7-F Tags
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MUN5211T1G
onsemi
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DTC043ZEBTL
Rohm Semiconductor
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DTC114EKAT146
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DDTD113ZC-7-F
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PDTC143XT,215
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MMUN2211LT1G
onsemi
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