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Diodes Incorporated DCX143TU-7-F
- Part No.:
- DCX143TU-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays, Pre-Biased
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
DCX143TU-7-F.pdf
- Description:
- TRANS PREBIAS NPN/PNP SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:94,950
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Product details
Overview
DCX143TU-7-F from Diodes Incorporated is a complementary pre-biased NPN+PNP transistor pair in SOT363, designed for compact logic-level switching and signal inversion in space-constrained PCBs. It features 50V VCEO, 4.7kΩ integrated R1 bias resistor (NPN & PNP), 100mA peak output current per section, and operates across –55°C to +150°C - used in automotive body control modules for LED driver enable/disable sequencing.
For engineers reviewing the DCX143TU-7-F datasheet, DCX143TU-7-F pinout, DCX143TU-7-F application, or DCX143TU-7-F equivalent, key selection criteria include verified dual-polarity switching capability, matched hFE (100–600), SOT363 thermal resistance (625°C/W), and AEC-Q101 qualification for under-hood signal conditioning.
Technical Context
This device integrates two monolithic transistors - one NPN and one PNP - each with a dedicated 4.7kΩ base-emitter pull-up resistor (R1 only configuration). The complementary topology enables push-pull output stages without external biasing components, reducing BOM count and layout area in digital interface circuits.
Each transistor supports independent operation up to 50V supply, delivers ±100mA peak current, and maintains VCE(sat) ≤ ±0.3V at IC/IB = 1mA/0.1mA. Its ±5V VEBO, ±50V BVCBO, and –55°C to +150°C operating range support robust performance in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | ±50V - Enables direct interface with 24V automotive rails and 3.3V/5V logic without level-shifting. |
| IO (continuous) | ±100mA - Supports driving small relays, LEDs, or gate inputs of power MOSFETs in discrete control paths. |
| VCE(sat) | ≤ ±0.3V @ IC/IB = 1mA/0.1mA - Minimizes conduction loss and self-heating in high-duty-cycle switching. |
| hFE | 100–600 @ IC = ±1mA, VCE = ±5V - Ensures reliable turn-on margin across temperature and process variation. |
| R1 | 4.7kΩ ±30% - Integrated bias resistor eliminates need for external base resistors in standard TTL/CMOS-compatible switching. |
| PD | 200mW total - Matches thermal limits of SOT363 on FR-4, enabling use in dense layouts without forced airflow. |
| TJ range | –55°C to +150°C - Qualified for engine bay, transmission control, and ADAS sensor interface applications. |
Pinout & Package
Package: SOT363 - 6-pin surface-mount plastic package (2.15mm × 2.10mm × 0.95mm), lead-free, halogen-free, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BQ2) | PNP Base | Input node for PNP transistor; internally connected to 4.7kΩ resistor to emitter (pin 6). |
| 2 (BQ1) | NPN Base | Input node for NPN transistor; internally connected to 4.7kΩ resistor to emitter (pin 3). |
| 3 (EQ1) | NPN Emitter | Common emitter connection for NPN section; tied to ground or low-side reference in typical configurations. |
| 4 (CQ2) | PNP Collector | Output node for PNP section; sinks current when active, used for high-side switching or inverted logic output. |
| 5 (CQ1) | NPN Collector | Output node for NPN section; sources current when active, used for low-side switching or non-inverted logic output. |
| 6 (EQ2) | PNP Emitter | Common emitter connection for PNP section; tied to VCC or high-side rail in typical configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Complementary NPN+PNP pair | Enables single-package push-pull or totem-pole outputs without external component matching. |
| Integrated 4.7kΩ R1 bias resistors | Eliminates two external resistors per channel, reducing footprint by ~1.5mm² and assembly cost. |
| AEC-Q101 qualified | Validated for automotive applications including body electronics, lighting control, and HVAC actuators. |
| SOT363 package with 625°C/W RθJA | Supports 200mW dissipation on standard FR-4 PCBs without thermal vias or heatsinking. |
| ±50V breakdown rating | Allows direct interfacing with 24V systems and transient-tolerant operation in noisy vehicle electrical environments. |
Applications
| Automotive LED Driver Enable | Industrial Logic-Level Translation |
|---|---|
|
Use Scenario: Controlling ON/OFF state of exterior LED lamps via microcontroller GPIO in a 12V/24V vehicle system. IC Role / Device Role / Timing Role: Dual-transistor switch providing complementary drive to high-side and low-side FET gates or directly sourcing/sinking LED current. Use Value: Eliminates four discrete resistors and two transistors, reducing bill-of-materials and improving board-level reliability under vibration and thermal cycling. |
Use Scenario: Converting 3.3V CMOS logic signals to 5V/12V levels for legacy industrial sensors and PLC I/O modules. IC Role / Device Role / Timing Role: Level-shifting buffer with push-pull output stage, delivering fast edge rates and rail-to-rail swing without external pull-ups. Use Value: Achieves <100ns propagation delay and <10mA drive strength while maintaining input compatibility with low-power MCU outputs. |
| USB-C Port Power Switch Control | Smart Home Relay Driver Interface |
|
Use Scenario: Enabling/disabling VBUS power path in USB-C receptacles based on CC line detection logic. IC Role / Device Role / Timing Role: Low-leakage, fast-turnoff switch controlling gate voltage of external load-switch MOSFETs during hot-plug events. Use Value: IO(off) ≤ ±0.5μA ensures minimal standby current draw; ±50V rating withstands USB-C VBUS transients up to ±20V. |
Use Scenario: Driving electromagnetic relays in smart thermostats and home automation hubs using 3.3V microcontroller outputs. IC Role / Device Role / Timing Role: Current-amplifying interface between low-current GPIO and relay coil requiring 10–20mA at 5–12V. Use Value: Delivers ≥100mA peak current with VCE(sat) ≤ 0.3V, minimizing coil heating and ensuring reliable relay dropout at end-of-life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar complementary pre-biased transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DCX143EU-7-F | Includes both R1 (4.7kΩ) and R2 (4.7kΩ); dual-resistor configuration improves noise immunity but increases input capacitance. | Better suited for noisy industrial bus interfaces where input filtering is critical; less optimal for high-speed GPIO toggling. | Select DCX143EU if input transient suppression is required; otherwise DCX143TU offers lower input capacitance and faster response. |
| DCX143ZU-7-F | R1 = 4.7kΩ, R2 = 47kΩ - asymmetric bias network optimized for higher gain and lower input current (1.8mA vs. 0.88mA at VI=5V). | Preferred for battery-powered IoT nodes where input current minimization extends runtime; not ideal for high-speed switching due to slower turn-on. | Choose DCX143ZU only when ultra-low quiescent input current is mandatory; DCX143TU provides better balance of speed and drive strength. |
Compared with DCX143EU-7-F and DCX143ZU-7-F, DCX143TU-7-F delivers the fastest switching response and lowest input capacitance among the R1-only variants, making it optimal for GPIO-driven logic translation and timing-critical enable/disable functions.
Availability
DCX143TU-7-F is available at Aetrix Electronics and suitable for automotive lighting control, industrial I/O buffering, and USB-C power management requiring stable component supply and long-term production continuity.
Supply support for DCX143TU-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 consumer markets.
The DCX series targets space- and cost-sensitive signal switching applications, with design emphasis on AEC-Q101 compliance, SOT363 thermal efficiency, and simplified BOM reduction through integrated biasing.
FAQ
What is the maximum continuous output current per transistor in DCX143TU-7-F?
The DCX143TU-7-F supports ±100mA continuous output current per transistor section under derated conditions (TA ≤ 25°C, PD ≤ 200mW). At elevated ambient temperatures, current must be reduced per the 625°C/W thermal resistance curve - e.g., max ±60mA at 85°C ambient.
Does DCX143TU-7-F require external base resistors for standard logic-level drive?
No. DCX143TU-7-F integrates a 4.7kΩ resistor from each base to its respective emitter (R1 only), enabling direct connection to 3.3V or 5V CMOS/TTL outputs without external biasing. This eliminates two resistors per channel and simplifies layout.
Is DCX143TU-7-F qualified for automotive applications?
Yes. DCX143TU-7-F is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. It meets automotive requirements for temperature range (–55°C to +150°C), humidity resistance, and mechanical shock/vibration endurance.
How does the pin configuration support push-pull output topologies?
Pins 5 (NPN collector) and 4 (PNP collector) serve as complementary outputs, while pins 3 (NPN emitter) and 6 (PNP emitter) provide separate emitter references. This allows independent connection to ground and VCC, enabling true totem-pole or push-pull operation without cross-conduction risk.
DCX143TU-7-F 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:
- 1 NPN, 1 PNP - Pre-Biased (Dual)
- Current - Collector (Ic) (Max):
- 100mA
- Voltage - Collector Emitter Breakdown (Max):
- 50V
- Resistor - Base (R1):
- 4.7kOhms
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 250µA, 2.5mA
- Current - Collector Cutoff (Max):
- -
- Frequency - Transition:
- 250MHz
- Power - Max:
- 200mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
DCX143TU-7-F FAQ
1.How can I place an order for DCX143TU-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DCX143TU-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 DCX143TU-7-F reliable?
The price and inventory of DCX143TU-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 DCX143TU-7-F is usually 5 days.
3.What payment methods are accepted for DCX143TU-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DCX143TU-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DCX143TU-7-F?
DCX143TU-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DCX143TU-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 DCX143TU-7-F?
For technical support, including DCX143TU-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DCX143TU-7-F requirements.
6.How does Aetrix verify that DCX143TU-7-F is sourced from the original manufacturer or authorized distributors?
All DCX143TU-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 DCX143TU-7-F meets industry standards.
7.What is the process for return or replacement of DCX143TU-7-F?
All DCX143TU-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DCX143TU-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 DCX143TU-7-F part is unused and in its original packaging.
Return procedure for DCX143TU-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DCX143TU-7-F Tags
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SMUN5311DW1T1G
onsemi
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UMH9NTN
Rohm Semiconductor
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PUMH13,115
Nexperia USA Inc.
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PUMD3-QX
Nexperia USA Inc.
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PUMD2,115
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RN4987FE,LF(CT
Toshiba Semiconductor and Storage
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PUMD12,115
Nexperia USA Inc.
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PUMD9,115
Nexperia USA Inc.
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PUMH9,115
Nexperia USA Inc.
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PUMD3,115
Nexperia USA Inc.
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DCX114EU-7-F
Diodes Incorporated
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PUMD13,115
Nexperia USA Inc.
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