My Inquiry
My Account
Diodes Incorporated DCX143TU-7
- Part No.:
- DCX143TU-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays, Pre-Biased
- Package:
- -
- Datasheet:
-
DCX143TU-7.pdf
- Description:
- TRANS PREBIAS NPN/PNP SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:854
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DCX143TU-7 from Diodes Incorporated is a complementary pre-biased NPN+PNP transistor pair in SOT363, featuring 50V VCEO, 4.7kΩ integrated R1 bias resistor (NPN and PNP sides), ±100mA peak output current capability, and AEC-Q101 qualification for automotive signal switching applications such as LED driver control and logic-level translation.
For engineers reviewing the DCX143TU-7 datasheet, DCX143TU-7 pinout, DCX143TU-7 application, or DCX143TU-7 equivalent, key selection criteria include verified R1=4.7kΩ tolerance (±30%), VCE(sat) ≤ 0.3V / –0.3V at IC/IB=1mA/0.1mA, hFE = 100–600, and thermal resistance RθJA = 625°C/W on FR-4.
Technical Context
This dual-transistor device integrates matched NPN and PNP silicon transistors with a single 4.7kΩ base bias resistor per transistor - no external R2. It operates with symmetrical ±50V breakdown ratings (BVCBO, BVCEO), supports bidirectional input voltage ranges (–5V to +5V logic compatibility), and delivers low-saturation switching across –55°C to +150°C ambient.
The SOT363 package enables high-density placement in space-constrained automotive ECUs and industrial I/O modules. Its fully lead-free, halogen-free construction meets RoHS 3 and AEC-Q101 stress test requirements including HTOL, temperature cycling, and ESD HBM ≥ 2kV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V (NPN) / –50 V (PNP): Enables use in 24V automotive supply rails with margin against load-dump transients. |
| R1 | 4.7 kΩ ±30%: Integrated base bias resistor eliminates two external components per transistor, reducing BOM count and layout area. |
| VCE(sat) | ≤ 0.3 V / ≤ –0.3 V at IC/IB = 1mA/0.1mA: Ensures low conduction loss in digital switching and level-shifting circuits. |
| hFE | 100–600 at IC = ±1mA, VCE = ±5V: Provides stable current gain across temperature for reliable gate/base drive in discrete logic interfaces. |
| PD | 200 mW total (150 mW per element max): Supports continuous operation in thermally constrained PCBs with standard SOT363 pad layout. |
| fT | 250 MHz at VCE = ±10V, IE = ±5mA: Sufficient bandwidth for PWM frequencies up to ~10 MHz in motor control feedback paths. |
Pinout & Package
SOT363 surface-mount package: 6-pin, 2.2mm × 2.1mm footprint, 0.65mm pitch, matte tin-plated leads, moisture sensitivity level 1, weight ≈ 0.006g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (E1) | NPN Emitter | Common emitter node for NPN transistor; tied to system ground or low-side reference in push-pull configurations. |
| 2 (B1) | NPN Base | Internally connected to 4.7kΩ resistor; accepts TTL/CMOS logic input directly without external biasing. |
| 3 (C1) | NPN Collector | Active-high switch output; sinks current when driven, suitable for driving LEDs or MOSFET gates. |
| 4 (C2) | PNP Collector | Active-low switch output; sources current when driven, complements NPN for rail-to-rail signal inversion. |
| 5 (B2) | PNP Base | Internally connected to 4.7kΩ resistor; accepts inverted logic or complementary control signals. |
| 6 (E2) | PNP Emitter | Common emitter node for PNP transistor; typically tied to VCC in high-side switching applications. |
Key Features
| Feature | Design Value |
|---|---|
| Complementary NPN+PNP pair | Single SOT363 package replaces two discrete transistors and four resistors, cutting board space by >60% vs. discrete solution. |
| AEC-Q101 qualified | Validated for automotive underhood applications including engine control, body electronics, and ADAS sensor interfaces. |
| Pre-biased with R1 only | No R2 required - simplifies design for unidirectional biasing in level translators and digital buffers. |
| Green, RoHS 3 compliant | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb), UL 94V-0 rated. |
| High-temperature operation | Rated for –55°C to +150°C junction temperature, supporting extended-life deployment in industrial PLCs and power converters. |
Applications
| Automotive LED Tail Light Control | Industrial PLC Digital Output Module |
|---|---|
|
Use Scenario: Driving segmented red/amber LED arrays in rear lighting clusters with CAN-controlled PWM dimming. IC Role / Device Role / Timing Role: Dual-transistor switch providing synchronized high-side (PNP) and low-side (NPN) current paths for bidirectional LED current steering. Use Value: Eliminates need for separate base-drive circuitry, reduces component count by 4× per channel, and maintains <0.3V saturation drop at 100mA to minimize thermal rise. |
Use Scenario: Isolating microcontroller GPIOs from 24V industrial field devices (solenoids, relays, sensors) in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Logic-level translator and current amplifier enabling 3.3V/5V MCU outputs to safely switch 24V loads with fast turn-on/turn-off. Use Value: Delivers 100mA continuous output per channel with guaranteed hFE ≥ 100 over full temperature range, ensuring robust noise immunity in electrically noisy factory environments. |
| USB-C Port Power Switching | Consumer Appliance Motor Driver Interface |
|
Use Scenario: Controlling VCONN and CC line pull-up/pull-down resistors in USB-C receptacles per USB PD specification. IC Role / Device Role / Timing Role: Precision-configured switch managing bidirectional 5V logic signaling with sub-μs propagation delay and minimal leakage. Use Value: R1 = 4.7kΩ matches USB-C spec requirements for CC termination; IO(off) ≤ 0.5μA prevents false detection during hot-plug events. |
Use Scenario: Interfacing 3.3V MCU PWM outputs to bipolar stepper motor H-bridge enable inputs in smart home HVAC actuators. IC Role / Device Role / Timing Role: Level-shifting buffer amplifying weak MCU outputs to drive high-threshold gate drivers while rejecting EMI. Use Value: fT = 250MHz ensures clean edge integrity at 20kHz PWM frequencies; VCE(sat) ≤ 0.3V minimizes self-heating during sustained 100ms enable pulses. |
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 = 47kΩ resistors; higher input impedance, lower input current (0.88mA vs. 1.8mA at VI=5V). | Better suited for high-impedance MCU outputs or battery-powered systems where input current must be minimized. | Select DCX143EU if driving from weak-sourcing GPIOs; DCX143TU is preferred when direct TTL-level drive and faster switching are required. |
| DCX114TU-7-F | R1 = 10kΩ (vs. 4.7kΩ); higher VI(on) threshold (1.9V min vs. 1.99V), lower input current (0.88mA vs. 1.8mA at VI=5V). | Improved noise immunity in electrically noisy environments due to higher input threshold voltage. | Choose DCX114TU for 5V CMOS systems requiring Schmitt-trigger-like noise rejection; DCX143TU offers lower VCE(sat) and better drive strength for 3.3V logic. |
Compared with DCX143EU-7-F and DCX114TU-7-F, DCX143TU-7 provides the lowest VCE(sat) and highest output current drive among the three, making it optimal for high-speed, high-current digital interface applications where minimal conduction loss is critical.
Availability
DCX143TU-7 is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O modules, USB-C port management, and consumer appliance motor interfaces requiring stable component supply and AEC-Q101 compliance.
Supply support for DCX143TU-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, specializing in high-reliability components for automotive, industrial, and computing markets since 1964.
The DCX series targets cost-sensitive, space-constrained digital interface applications requiring integrated biasing, AEC-Q101 qualification, and green packaging - optimized for automotive body electronics and industrial control.
FAQ
What is the maximum continuous output current rating for DCX143TU-7?
The DCX143TU-7 supports 100mA continuous output current per transistor (NPN and PNP sections) at TA = +25°C with derating above 25°C per the 625°C/W thermal resistance curve. Peak pulsed current is rated at ±100mA, limited by internal power dissipation (200mW total, 150mW per element max).
Does DCX143TU-7 require an external R2 resistor?
No. DCX143TU-7 contains only R1 = 4.7kΩ on both NPN and PNP base terminals - no R2 is integrated or required. This configuration is designed for direct logic-level drive where base current is sourced/sunk entirely through R1, unlike R1+R2 variants such as DCX143EU.
Is DCX143TU-7 suitable for 3.3V logic interfacing?
Yes. With VI(on) typ. 1.99V (NPN) and –2.5V (PNP) at IO = 20mA, DCX143TU-7 reliably switches with 3.3V CMOS outputs. Its VCE(sat) ≤ 0.3V ensures minimal voltage drop, and hFE ≥ 100 at IC = 1mA guarantees sufficient gain even at reduced supply voltages.
How does the SOT363 package affect thermal performance?
The SOT363 package has RθJA = 625°C/W on standard FR-4 PCBs with minimum recommended pad layout. At 100mA output and 0.3V VCE(sat), power dissipation is ~30mW per transistor, resulting in ~19°C junction-to-ambient rise - well within the –55°C to +150°C operating range when ambient stays below +130°C.
DCX143TU-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Resistor - Base (R1):
- -
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- Frequency - Transition:
- -
- Power - Max:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
DCX143TU-7 FAQ
1.How can I place an order for DCX143TU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DCX143TU-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 DCX143TU-7 reliable?
The price and inventory of DCX143TU-7 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 is usually 5 days.
3.What payment methods are accepted for DCX143TU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DCX143TU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DCX143TU-7?
DCX143TU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DCX143TU-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 DCX143TU-7?
For technical support, including DCX143TU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DCX143TU-7 requirements.
6.How does Aetrix verify that DCX143TU-7 is sourced from the original manufacturer or authorized distributors?
All DCX143TU-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 DCX143TU-7 meets industry standards.
7.What is the process for return or replacement of DCX143TU-7?
All DCX143TU-7 units undergo pre-shipment inspection (PSI). If there is an issue with DCX143TU-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 DCX143TU-7 part is unused and in its original packaging.
Return procedure for DCX143TU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DCX143TU-7 Tags
-
SMUN5311DW1T1G
onsemi
-
UMH9NTN
Rohm Semiconductor
-
PUMH13,115
Nexperia USA Inc.
-
PUMD3-QX
Nexperia USA Inc.
-
PUMD2,115
Nexperia USA Inc.
-
RN4987FE,LF(CT
Toshiba Semiconductor and Storage
-
PUMD12,115
Nexperia USA Inc.
-
PUMD9,115
Nexperia USA Inc.
-
PUMH9,115
Nexperia USA Inc.
-
PUMD3,115
Nexperia USA Inc.
-
DCX114EU-7-F
Diodes Incorporated
-
PUMD13,115
Nexperia USA Inc.
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
