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Diodes Incorporated DDC144TU-7
- Part No.:
- DDC144TU-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays, Pre-Biased
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
DDC144TU-7.pdf
- Description:
- TRANS 2NPN PREBIAS 0.2W SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:1,738
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Product details
Overview
DDC144TU from Diodes Incorporated is a dual NPN transistor array in SOT363 package, featuring integrated 47 kΩ base resistors per channel, 50 V VCEO, and 100 mA IC(max). It serves as a logic-level switching device for microcontroller-driven loads such as LEDs, relays, and small solenoids in industrial control and automotive body electronics.
For engineers reviewing the DDC144TU datasheet, DDC144TU pinout, DDC144TU application, or DDC144TU equivalent, this part supports direct GPIO interfacing without external biasing, offers guaranteed turn-on at VI(on) ≤ 1.5 V, and delivers low VCE(sat) of 30 mV at 2.5 mA drive-critical for low-power embedded switching.
Technical Context
This dual discrete NPN device integrates two independent transistors with monolithic 47 kΩ base resistors (±30%), enabling single-resistor-per-transistor biasing. Each channel operates with VCEO = 50 V, VBE(on) ≤ 1.2 V, and hFE = 150–400 at IC = 1–10 mA.
The SOT363 package supports thermal resistance RθJA = 625 °C/W on FR-4 PCB, with junction temperature range –55 °C to +150 °C. Small-signal fT reaches 250 MHz at VCE = 10 V, IE = 5 mA, confirming suitability for moderate-speed digital switching-not RF amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use with 24 V industrial rails and 3.3/5 V logic interfaces. |
| IC(max) | 100 mA - Continuous collector current per transistor; sufficient for driving LEDs, small relays, and logic buffers. |
| RB | 47 kΩ ±30% - Integrated base resistor eliminates external components; reduces BOM count and layout area in GPIO-switched designs. |
| VCE(sat) | 30 mV typ. @ IC = 2.5 mA, IB = 0.25 mA - Low saturation voltage minimizes power loss and self-heating during sustained conduction. |
| hFE | 150–400 @ VCE = 5 V, IC = 1–10 mA - High DC gain ensures reliable saturation with minimal base drive current from low-strength MCU outputs. |
| fT | 250 MHz - Gain-bandwidth product confirms fast switching capability up to ~10–20 MHz square-wave operation under light loads. |
| PD | 200 mW - Total device power dissipation limit; derates linearly above +25 °C at 1.6 mW/°C for thermal design margining. |
Pinout & Package
SOT363 (SC-70-6) surface-mount package with 0.65 mm pitch, 2.15 mm × 2.10 mm footprint, and 0.95 mm height. Molded green compound, matte tin finish, JEDEC-compliant leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base of Q1 | Input node for first transistor; internally connected to 47 kΩ resistor to pin 2 (emitter). |
| 2 | Emitter of Q1 | Common emitter reference for Q1; tied to ground or load return path in low-side switch configuration. |
| 3 | Collector of Q1 | Output node for Q1; connects to load anode (e.g., LED cathode or relay coil terminal). |
| 4 | Emitter of Q2 | Common emitter reference for Q2; electrically isolated from pin 2 but same functional role. |
| 5 | Collector of Q2 | Output node for Q2; independent high-current path for second switched load. |
| 6 | Base of Q2 | Input node for second transistor; internally connected to 47 kΩ resistor to pin 4 (emitter). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated base resistors | Two matched 47 kΩ resistors eliminate external bias components, reducing PCB area and assembly cost in dual-switch applications. |
| Epitaxial planar die construction | Ensures stable hFE across temperature and consistent VCE(sat) performance over 10⁵ switching cycles. |
| Lead-free & RoHS 3 compliant | Fully compliant with EU Directive 2015/863/EU; <900 ppm Br, <900 ppm Cl, <1000 ppm Sb-meets automotive "Green" material requirements. |
| Wide operating temperature | Junction range –55 °C to +150 °C supports under-hood automotive modules and industrial controllers without derating. |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
|
Use Scenario: Driving multiple indicator LEDs from a resource-constrained MCU with limited GPIO current capability. IC Role / Device Role / Timing Role: Dual low-side switch providing independent current paths for red/green status LEDs with no external resistors required. Use Value: Reduces component count by 4 resistors per DDC144TU, cuts PCB area by >1.5 mm² vs. discrete transistor+resistor solutions, and guarantees VCE(sat) ≤ 100 mV at 10 mA load. |
Use Scenario: Adding two extra digital output channels to an STM32-based PLC module where all native GPIOs are allocated. IC Role / Device Role / Timing Role: Logic-level translator and current amplifier enabling 3.3 V MCU outputs to switch 24 V solenoid loads via external pull-up. Use Value: Eliminates need for level-shifting ICs or MOSFET drivers; supports 100 mA per channel with guaranteed turn-on at VI(on) ≤ 1.5 V and VI(off) ≥ 0.4 V noise margin. |
| Automotive Body Control Module | Industrial Sensor Interface Board |
|
Use Scenario: Controlling interior lighting and door lock actuators in AEC-Q200-aligned BCM designs. IC Role / Device Role / Timing Role: Dual NPN driver handling PWM-dimmed LED clusters and 12 V relay coils in compact, thermally constrained modules. Use Value: Qualified for automotive environments (IATF 16949 manufacturing, PPAP-capable), with 150 °C max TJ and 625 °C/W RθJA enabling operation at 85 °C ambient without heatsinking. |
Use Scenario: Isolating and buffering analog sensor enable signals in a 4–20 mA loop-powered transmitter. IC Role / Device Role / Timing Role: Low-leakage switch enabling/disabling sensor excitation circuitry while maintaining <500 nA ICEO at 50 V VCE. Use Value: Delivers <850 nA off-state leakage (IO(off)) at 50 V, ensuring sensor bias stability and minimizing quiescent current in battery-backed systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual NPN switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSVD144T1G | Same SOT363 package, identical 47 kΩ RB, but VCEO = 40 V and hFE min = 100 (vs. 150 for DDC144TU). | Limited to ≤36 V systems; lower gain requires higher base drive current for full saturation at 100 mA. | Select when cost sensitivity outweighs 10 V headroom and gain margin needs. |
| EMD2P5R | PNP+NPN complementary pair in SOT363; lacks integrated base resistors-requires external 47 kΩ resistors per channel. | Supports high-side (PNP) and low-side (NPN) switching simultaneously, but increases BOM count and layout complexity. | Choose only when bidirectional switching topology is mandatory and board space permits added passives. |
Compared with NSVD144T1G and EMD2P5R, DDC144TU provides superior voltage margin (50 V), higher guaranteed hFE, and zero external components-making it optimal for new 24 V industrial and automotive designs prioritizing simplicity and robustness.
Availability
DDC144TU is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, and IoT sensor interface boards requiring stable component supply across multi-year production cycles.
Supply support for DDC144TU 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 centers across Asia and manufacturing in IATF 16949-certified facilities.
The DDC series targets logic-compatible switching applications, emphasizing integration, reliability, and compliance for automotive and industrial markets-designed to replace discrete transistor-resistor combinations with validated performance.
FAQ
What is the maximum continuous current per channel for DDC144TU?
The DDC144TU supports 100 mA continuous collector current per transistor (Q1 and Q2) at TA = +25 °C. Derating applies above ambient: power dissipation drops by 1.6 mW/°C, limiting usable current at elevated temperatures-e.g., ~70 mA at +85 °C ambient with standard PCB layout.
Can DDC144TU be used with 3.3 V microcontrollers?
Yes. DDC144TU guarantees turn-on at VI(on) ≤ 1.5 V and turn-off at VI(off) ≥ 0.4 V, providing ample noise margin for 3.3 V GPIOs. Its 47 kΩ internal base resistor draws only ~19.2 mA at 5 V input, scaling to ~12.7 mA at 3.3 V-well within typical MCU output capability.
Is DDC144TU qualified for automotive applications?
DDC144TU is manufactured in IATF 16949-certified facilities and supports PPAP documentation. While not pre-qualified to AEC-Q101, Diodes offers automotive-grade variants (e.g., DDC144TUQ) with full AEC-Q101 stress testing-contact Diodes or Aetrix for qualification path and sample availability.
What is the thermal resistance of DDC144TU in standard layout?
RθJA is 625 °C/W when mounted on a 1″ × 0.85″ FR-4 PCB with Diodes' recommended pad layout (per DS30767 page 6). This value assumes only one junction is active; simultaneous dual-channel operation requires derating based on total power (PD = 200 mW max) and local copper area.
DDC144TU-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- 2 NPN - Pre-Biased (Dual)
- Current - Collector (Ic) (Max):
- 50mA
- Voltage - Collector Emitter Breakdown (Max):
- 50V
- Resistor - Base (R1):
- 47kOhms
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 150 @ 25mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 5mA, 50mA
- Current - Collector Cutoff (Max):
- 850nA
- Frequency - Transition:
- 250MHz
- Power - Max:
- 200mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
DDC144TU-7 FAQ
1.How can I place an order for DDC144TU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDC144TU-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 DDC144TU-7 reliable?
The price and inventory of DDC144TU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDC144TU-7 is usually 5 days.
3.What payment methods are accepted for DDC144TU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDC144TU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDC144TU-7?
DDC144TU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDC144TU-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 DDC144TU-7?
For technical support, including DDC144TU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDC144TU-7 requirements.
6.How does Aetrix verify that DDC144TU-7 is sourced from the original manufacturer or authorized distributors?
All DDC144TU-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 DDC144TU-7 meets industry standards.
7.What is the process for return or replacement of DDC144TU-7?
All DDC144TU-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDC144TU-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 DDC144TU-7 part is unused and in its original packaging.
Return procedure for DDC144TU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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