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Diodes Incorporated DCX144EU-7
- Part No.:
- DCX144EU-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays, Pre-Biased
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
DCX144EU-7.pdf
- Description:
- TRANS PREBIAS NPN/PNP SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:9,886
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Product details
Overview
DCX144EU-7 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 matched 47kΩ input bias resistors (R1 = R2), 50V VO rating, ±30mA continuous output current per section, and operates across –55°C to +150°C for automotive and industrial control applications.
For engineers reviewing the DCX144EU-7 datasheet, DCX144EU-7 pinout, DCX144EU-7 application, or DCX144EU-7 equivalent, key selection criteria include input threshold voltage (VI(on) = ±1.9–3.0V), on-state output voltage (VO(on) ≤ ±0.3V at 10mA), DC current gain (GI = 68), and AEC-Q101 qualification for automotive use.
Technical Context
This dual-transistor device integrates one NPN and one PNP silicon transistor with integrated base-emitter bias resistors (R1 = R2 = 47kΩ ±30%) in a single SOT363 package. Each section supports independent operation with symmetrical absolute maximum ratings: ±50V supply voltage, ±100mA peak output current, and ±30mA continuous output current.
The NPN and PNP sections share identical thermal characteristics (PD = 200mW, RθJA = 625°C/W) and electrical behavior under mirrored test conditions - e.g., VI(on) = +1.9–3.0V (NPN) and –1.9––3.0V (PNP) at VO = ±0.3V, enabling bidirectional level translation and push-pull driver configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VO Rating | ±50V - Enables use in 24V/36V industrial bus and automotive battery-supplied circuits without external clamping. |
| R1 / R2 Value | 47kΩ ±30% - Sets consistent base drive impedance for predictable turn-on thresholds and reduces external component count. |
| IO (Continuous) | ±30mA per section - Supports direct driving of small-signal loads like LED indicators, optocoupler inputs, or gate resistors for power MOSFETs. |
| VO(on) | ≤ ±0.3V at IO/IL = ±10mA/±0.5mA - Ensures low conduction loss and reliable logic-low output in open-collector/open-emitter interfaces. |
| GI (DC Current Gain) | 68 at VO = ±5V, IO = ±5mA - Provides stable current amplification for digital switching with minimal base drive current (IL = ±0.18mA at VI = ±5V). |
| TJ Range | –55°C to +150°C - Qualified for under-hood automotive, motor control, and high-temperature industrial environments. |
| AEC-Q101 | Qualified - Meets stress-test requirements for automotive electronics, including temperature cycling, HTRB, and ESD. |
Pinout & Package
Package: SOT363 - 6-pin surface-mount plastic package (2.15mm × 2.10mm × 0.95mm), lead-free, RoHS-compliant, moisture sensitivity level 1, UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CQ1) | NPN Collector | Main current output node for NPN section; connects to load anode or pull-up rail in active-low switch configuration. |
| 2 (BQ1) | NPN Base | Internally connected to R1 and R2; accepts logic-level input (VI) to enable NPN conduction. |
| 3 (EQ1) | NPN Emitter | Common emitter node for NPN; typically grounded or tied to reference potential in low-side switching. |
| 4 (EQ2) | PNP Emitter | Common emitter node for PNP; typically tied to VCC in high-side switching or level-shifting applications. |
| 5 (BQ2) | PNP Base | Internally connected to R1 and R2; accepts inverted logic-level input to enable PNP conduction. |
| 6 (CQ2) | PNP Collector | Main current output node for PNP section; drives loads referenced to ground in active-high configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Complementary NPN+PNP Pair | Enables push-pull output stages and bidirectional signal conditioning without discrete transistor pairing or layout matching. |
| Matched Bias Resistors (R1 = R2) | 47kΩ ±30% ensures symmetrical input thresholds and consistent switching behavior between both transistors. |
| AEC-Q101 Qualified | Validated for automotive-grade reliability including HTOL, temperature cycling, and ESD robustness (HBM ≥2kV). |
| SOT363 Footprint | 0.95mm height and 2.15mm × 2.10mm body allow placement in dense routing areas, such as MCU peripheral interface boards. |
| Green, Halogen-Free Construction | Meets RoHS 3 (2015/863/EU), <900ppm Br/Cl, <1000ppm Sb - compliant for eco-sensitive consumer and medical end equipment. |
Applications
| Automotive Door Module Control | Industrial PLC Input Conditioning |
|---|---|
|
Use Scenario: Driving window lift motor direction signals and mirror fold/unfold commands in door control units. IC Role / Device Role / Timing Role: Dual-channel level translator and current buffer, converting 3.3V/5V MCU GPIO outputs into ±24V-compatible push-pull drive signals. Use Value: Eliminates need for two separate bias networks and reduces BOM count by 4 components per channel while maintaining AEC-Q101 compliance. |
Use Scenario: Converting 24V field sensor inputs (NAMUR or dry contact) into clean 3.3V/5V logic levels for PLC microcontrollers. IC Role / Device Role / Timing Role: Input stage signal conditioner with built-in pull-up/pull-down biasing and noise immunity via resistor-stabilized base drive. Use Value: Reduces external resistor count by 50% and improves ESD tolerance (IEC 61000-4-2 Level 3) due to internal resistor network isolation. |
| USB-C Power Delivery Sequencing | Smart Home Relay Driver Interface |
|
Use Scenario: Controlling USB-C CC line pull-up/pull-down resistors and VCONN enable sequencing during port negotiation. IC Role / Device Role / Timing Role: Precision-controlled dual switch managing bidirectional CC line biasing and auxiliary power path activation. Use Value: Achieves sub-100ns propagation delay symmetry between NPN and PNP sections, ensuring strict USB PD specification timing margins. |
Use Scenario: Isolating and driving 12V/24V relay coils from low-voltage IoT controller outputs in smart lighting and HVAC systems. IC Role / Device Role / Timing Role: High-side (PNP) and low-side (NPN) coil driver with integrated base current limiting and saturation assurance. Use Value: Delivers guaranteed VO(on) ≤ ±0.3V at 30mA, minimizing relay coil power dissipation and enabling 100% duty-cycle operation. |
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 |
|---|---|---|---|
| DCX124EU-7-F | R1 = R2 = 22kΩ (vs. 47kΩ); higher input current (IL = ±0.36mA at ±5V) and lower VI(on) threshold (±1.1V typical). | Better suited for low-threshold 3.3V logic systems but draws 2× more base current than DCX144EU-7. | Select when interfacing with weak-drive MCUs or needing faster turn-on at cost of higher static power. |
| DCX114YU-7-F | Asymmetric bias (R1 = 10kΩ, R2 = 47kΩ); optimized for NPN-heavy applications with higher NPN GI (80) and lower PNP GI (68). | Preferred for unidirectional signal buffering where only one transistor is actively switched per cycle. | Choose when designing asymmetric drivers (e.g., NPN-switched LED + PNP standby indicator) to avoid overdesigning unused section. |
Compared with DCX124EU-7-F and DCX114YU-7-F, DCX144EU-7 offers balanced biasing and lowest base current draw among SOT363 pre-biased pairs, making it optimal for battery-powered or thermally constrained dual-switching nodes.
Availability
DCX144EU-7 is available at Aetrix Electronics and suitable for automotive door modules, industrial PLC input conditioning, USB-C power delivery sequencing, and smart home relay driver interfaces requiring stable component supply and AEC-Q101 traceability.
Supply support for DCX144EU-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, application-optimized components for automotive, industrial, and computing markets.
The DCX series targets space- and power-sensitive digital interface applications, delivering pre-biased transistor solutions that reduce design complexity and improve board-level reliability in harsh environments.
FAQ
What is the maximum continuous output current per transistor section in DCX144EU-7?
The DCX144EU-7 supports ±30mA continuous output current for both NPN and PNP sections at TA = +25°C, derating linearly above 25°C per the 625°C/W thermal resistance curve. Peak pulsed current is ±100mA with duty cycle limitations to maintain junction temperature below 150°C.
Does DCX144EU-7 require external bias resistors for basic switching operation?
No - DCX144EU-7 integrates matched 47kΩ base-emitter bias resistors (R1 and R2) internally, eliminating the need for external resistors in standard logic-level switching applications. Only the input signal and load connections are required for functional operation.
Is DCX144EU-7 qualified for automotive applications?
Yes - DCX144EU-7 is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. It meets automotive stress-test requirements including high-temperature operating life, temperature cycling, and ESD robustness per JESD22 standards.
How does the SOT363 package affect thermal performance in high-density layouts?
The SOT363 package delivers 625°C/W junction-to-ambient thermal resistance when mounted on FR-4 with minimum recommended pad layout. To maintain safe operation at full 200mW power dissipation, ensure ≥10mm² copper pour under the exposed pad area and avoid adjacent heat sources exceeding 85°C ambient.
DCX144EU-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Transistor Type:
- 1 NPN, 1 PNP - Pre-Biased (Dual)
- Current - Collector (Ic) (Max):
- 100mA
- Voltage - Collector Emitter Breakdown (Max):
- 50V
- Resistor - Base (R1):
- 47kOhms
- Resistor - Emitter Base (R2):
- 47kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 68 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250MHz
- Power - Max:
- 200mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
DCX144EU-7 FAQ
1.How can I place an order for DCX144EU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DCX144EU-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 DCX144EU-7 reliable?
The price and inventory of DCX144EU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DCX144EU-7 is usually 5 days.
3.What payment methods are accepted for DCX144EU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DCX144EU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DCX144EU-7?
DCX144EU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DCX144EU-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 DCX144EU-7?
For technical support, including DCX144EU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DCX144EU-7 requirements.
6.How does Aetrix verify that DCX144EU-7 is sourced from the original manufacturer or authorized distributors?
All DCX144EU-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 DCX144EU-7 meets industry standards.
7.What is the process for return or replacement of DCX144EU-7?
All DCX144EU-7 units undergo pre-shipment inspection (PSI). If there is an issue with DCX144EU-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 DCX144EU-7 part is unused and in its original packaging.
Return procedure for DCX144EU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DCX144EU-7 Tags
-
SMUN5311DW1T1G
onsemi
-
UMH9NTN
Rohm Semiconductor
-
PUMH13,115
Nexperia USA Inc.
-
PUMD3-QX
Nexperia USA Inc.
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PUMD2,115
Nexperia USA Inc.
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RN4987FE,LF(CT
Toshiba Semiconductor and Storage
-
PUMD12,115
Nexperia USA Inc.
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PUMD9,115
Nexperia USA Inc.
-
PUMH9,115
Nexperia USA Inc.
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PUMD3,115
Nexperia USA Inc.
-
DCX114EU-7-F
Diodes Incorporated
-
PUMD13,115
Nexperia USA Inc.
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