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Diodes Incorporated FCX1053AQTA
- Part No.:
- FCX1053AQTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
FCX1053AQTA.pdf
- Description:
- TRANS NPN 120V 1.5A MPT3
- Quantity:
- Payment:
- Shipping:
Inventory:2,779
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Product details
Overview
FCX1053AQTA from Diodes Incorporated is a 75V NPN medium-power bipolar junction transistor (BJT) in SOT89 package, qualified to AEC-Q101 for automotive use. It delivers 3A continuous collector current, 10A peak pulse current, and maintains hFE > 300 at IC = 1A - enabling robust switching in motor drivers and solenoid control circuits.
For engineers reviewing the FCX1053AQTA datasheet, FCX1053AQTA pinout, FCX1053AQTA application, or FCX1053AQTA equivalent, key selection criteria include its 78 mΩ RCE(SAT) at 4.5A, 125 °C/W RθJA on 15 mm × 15 mm PCB, and guaranteed BVCEO ≥ 75 V under automotive thermal and reliability requirements.
Technical Context
This NPN BJT operates as a high-current linear or saturated switch with low VCE(SAT) and stable hFE up to 10A. Its 150 V VCBO rating supports safe operation in inductive load flyback scenarios, while the exposed collector pad enables efficient thermal conduction to PCB copper.
The device's fT = 140 MHz and fast switching (tON = 162 ns, tOFF = 900 ns) support high-frequency DC–DC converter and backlight inverter designs. ESD HBM rating of 4 kV ensures resilience during board assembly and system-level handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCBO | 150 V - Withstands reverse collector-base voltage during inductive turn-off transients |
| VCEO | 75 V - Maximum sustainable collector-emitter voltage in common-emitter configuration |
| IC (continuous) | 3 A - Supports sustained current in fan motor drivers and relay coils without derating at TA ≤ 70°C |
| RCE(SAT) | 78 mΩ @ IC = 4.5A - Enables <100 mW conduction loss in 5V/4.5A gate driver stages |
| hFE | 300 @ IC = 1A - Ensures reliable base drive margin for 3A loads with IB ≤ 10 mA |
| RθJL | 3.6 °C/W - Low junction-to-lead thermal resistance via exposed collector pad for direct PCB heat sinking |
| ESD HBM | 4,000 V - Meets JEDEC JESD22-A114 Class 3A, reducing risk of assembly damage |
Pinout & Package
Package: SOT89 - surface-mount plastic package with exposed collector pad for thermal management; 0.05 g mass; UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Main current output terminal | Exposed metal pad - must be soldered to ≥15 mm² copper area for rated 1 W power dissipation |
| Emitter (E) | Current return path to ground/reference | Low-inductance connection critical for minimizing switching overshoot in inductive loads |
| Base (B) | Control input for current amplification | Requires ≤100 mA drive for full saturation at IC = 3A; VBE(SAT) = 900–1000 mV |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade temperature cycling (-55°C to +150°C), vibration, and humidity stress |
| High hFE linearity | hFE remains ≥270 from IC = 10 mA to 10 A - simplifies single-base-resistor biasing across load range |
| Green construction | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb); RoHS-compliant matte tin plating |
| PPAP capability | Full production part approval process documentation available for Tier-1 automotive suppliers |
Applications
| Automotive Emergency Lighting | DC Fan Motor Control |
|---|---|
Use Scenario: Driving high-intensity LED arrays during vehicle battery backup mode with 12–24 V supply. IC Role / Device Role / Timing Role: NPN switch controlling current path to LED string; operates in saturation with minimal VCE(SAT) loss. Use Value: 78 mΩ RCE(SAT) limits conduction loss to <170 mW at 4.5A, preserving battery runtime and reducing thermal load on PCB. |
Use Scenario: PWM-controlled 24 V DC blower fan in HVAC systems requiring >2 A steady-state current. IC Role / Device Role / Timing Role: High-current switching element in low-side driver stage; handles inductive kickback via 150 V VCBO rating. Use Value: Stable hFE > 300 at 1A ensures predictable base drive design; 4 kV ESD HBM prevents field failures during service replacement. |
| Solenoid Actuator Driver | DC–DC Module Power Switch |
Use Scenario: Energizing 12 V automotive door lock solenoids drawing 2.5–3 A peak current. IC Role / Device Role / Timing Role: Medium-power NPN switch replacing mechanical relays; driven by microcontroller GPIO with base resistor. Use Value: 10A ICM rating accommodates inrush surge; 75 V VCEO safely clamps flyback voltage when solenoid de-energizes. |
Use Scenario: Primary switch in non-isolated buck converter for 5 V rail generation from 12 V automotive supply. IC Role / Device Role / Timing Role: Fast-switching NPN transistor operating at ~100 kHz; leverages 140 MHz fT for clean edge transitions. Use Value: 162 ns tON and 900 ns tOFF enable efficient duty-cycle control; RθJL = 3.6 °C/W allows direct thermal coupling to heatsink plane. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN medium-power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTN19020CFH | Higher VCEO (100 V), lower RCE(SAT) (50 mΩ @ 4.5A), but SOT23-3 package limits power dissipation to 0.5 W | Better for space-constrained low-power switching; unsuitable for 3A continuous loads due to thermal limits | Select only if board area is critical and average current stays below 1.5 A with forced airflow |
| MJD127G | Same SOT89 package, 80 V VCEO, but higher RCE(SAT) (150 mΩ @ 4.5A) and lower hFE (200 @ 1A) | Acceptable for cost-sensitive industrial relays where gain margin and conduction loss are less critical | Choose when AEC-Q101 qualification is not required and thermal budget permits 2× conduction loss |
Compared with ZXTN19020CFH and MJD127G, FCX1053AQTA uniquely balances AEC-Q101 compliance, 3A continuous rating, and 78 mΩ RCE(SAT) in SOT89 - making it optimal for thermally demanding automotive switches where reliability and efficiency are co-prioritized.
Availability
FCX1053AQTA is available at Aetrix Electronics and suitable for automotive emergency lighting, DC fan motor control, and solenoid actuator driver applications requiring stable component supply and long-term lifecycle assurance.
Supply support for FCX1053AQTA 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 and manufacturing operations across Asia and the Americas.
The FCX series targets automotive-grade medium-power switching, emphasizing AEC-Q101 reliability, low saturation voltage, and thermal robustness for under-hood and cabin electronics.
FAQ
What is the maximum allowable PCB copper area for full 2.0 W power dissipation?
Full 2.0 W power dissipation requires mounting the FCX1053AQTA on a 50 mm × 50 mm, 1 oz copper area per the datasheet Note 8. Smaller copper areas reduce safe operating power: 15 mm × 15 mm supports only 1.0 W, and 25 mm × 25 mm supports 1.6 W under still-air conditions.
Can FCX1053AQTA replace a MOSFET in gate driver applications?
Yes - its low 78 mΩ RCE(SAT) and 3A continuous rating make it suitable for driving power MOSFET gates in low-side configurations, especially where cost and simplicity outweigh the need for ultra-low gate charge. Base drive must be sized for ≥100 mA peak to ensure saturation at 3A load.
Is the SOT89 footprint compatible with standard reflow profiles?
Yes - the SOT89 package uses matte tin-plated leads compliant with MIL-STD-202 Method 208 and supports standard lead-free reflow profiles (peak 260°C). The exposed collector pad requires adequate stencil aperture and solder paste volume to ensure void-free thermal interface to the PCB.
Does FCX1053AQTA support pulsed operation beyond 10A?
No - ICM = 10A is the absolute maximum peak pulse current, defined at pulse width ≤ 300 µs and duty cycle ≤ 2%. Exceeding this risks second breakdown or permanent degradation. For >10A pulses, parallel devices or higher-rated alternatives like FZT795 are recommended.
FCX1053AQTA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 1.5 A
- Voltage - Collector Emitter Breakdown (Max):
- 120 V
- Vce Saturation (Max) @ Ib, Ic:
- 320mV @ 80mA, 800mA
- Current - Collector Cutoff (Max):
- 1µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 120 @ 200mA, 5V
- Power - Max:
- 500 mW
- Frequency - Transition:
- 280MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- MPT3
FCX1053AQTA FAQ
1.How can I place an order for FCX1053AQTA through Aetrix?
Please submit a Request for Quotation (RFQ) for FCX1053AQTA 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 FCX1053AQTA reliable?
The price and inventory of FCX1053AQTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FCX1053AQTA is usually 5 days.
3.What payment methods are accepted for FCX1053AQTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FCX1053AQTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FCX1053AQTA?
FCX1053AQTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FCX1053AQTA 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 FCX1053AQTA?
For technical support, including FCX1053AQTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FCX1053AQTA requirements.
6.How does Aetrix verify that FCX1053AQTA is sourced from the original manufacturer or authorized distributors?
All FCX1053AQTA 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 FCX1053AQTA meets industry standards.
7.What is the process for return or replacement of FCX1053AQTA?
All FCX1053AQTA units undergo pre-shipment inspection (PSI). If there is an issue with FCX1053AQTA, 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 FCX1053AQTA part is unused and in its original packaging.
Return procedure for FCX1053AQTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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