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Diodes Incorporated FCX1053ATA
- Part No.:
- FCX1053ATA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
FCX1053ATA.pdf
- Description:
- TRANS NPN 75V 3A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,036
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Product details
Overview
FCX1053ATA from Diodes Incorporated is a 75V NPN medium-power transistor in SOT89 package, rated for 3A continuous collector current and 10A peak pulse current, with VCE(sat) = 78 mΩ at 4.5A and hFE > 300 at IC = 1A. It serves as a high-current switching element in DC–DC modules, motor drivers, and solenoid/relay control circuits.
For engineers reviewing the FCX1053ATA datasheet, FCX1053ATA pinout, FCX1053ATA application, or FCX1053ATA equivalent, key selection criteria include its AEC-Q101 qualification, low RCE(sat), high hFE stability up to 10A, and thermal resistance of 62.5°C/W on 50mm × 50mm copper.
Technical Context
This NPN bipolar junction transistor operates with a minimum BVCEO of 75V and supports switching applications requiring robust overvoltage margin and stable gain across wide current range (10mA–10A). Its fT = 140 MHz enables fast turn-on/turn-off performance in PWM-driven loads.
The device features an exposed collector pad thermally coupled to PCB copper, delivering RθJL = 3.6°C/W and enabling 2.0W power dissipation on 50mm × 50mm 1oz FR4. ESD ratings meet 4kV HBM and 400V MM per JEDEC JESD22-A114/A115.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 75 V - Withstands 75V collector-emitter voltage before breakdown, suitable for 48V bus switching and flyback snubbing. |
| IC (continuous) | 3 A - Supports sustained load current in fan drivers and relay coils without derating at TA ≤ 70°C. |
| VCE(sat) | 78 mΩ at 4.5A - Low saturation voltage minimizes conduction loss and self-heating in high-duty-cycle switching. |
| hFE | 300 min @ IC = 1A - Ensures reliable base drive margin and stable current amplification in linear and saturated operation. |
| RθJA | 62.5 °C/W - Achieved on 50mm × 50mm 1oz copper; enables 2.0W steady-state power handling at TA = 25°C. |
| ESD HBM | 4,000 V - Robust electrostatic immunity simplifies board-level ESD protection design in industrial environments. |
| fT | 140 MHz - Supports high-frequency switching in DC–DC converters and backlight inverters up to ~100 kHz. |
Pinout & Package
Package: SOT89 - Surface-mount plastic package with exposed collector pad for enhanced thermal conduction; 0.052 g mass; UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Main current output terminal | Exposed metal pad on underside - must be soldered to ≥50 mm² copper area for thermal compliance. |
| Emitter (E) | Current return path | Low-inductance connection point; referenced to system ground in common-emitter configurations. |
| Base (B) | Control input | Receives current-limited drive (max 500 mA) to saturate transistor; requires series resistor for TTL/CMOS interface. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per AEC standard. |
| High hFE stability | Maintains hFE ≥ 270 from 10mA to 10A, reducing base drive complexity across load ranges. |
| Low RCE(sat) | 78 mΩ at 4.5A ensures <100 mW conduction loss at nominal operating point, improving efficiency in power stages. |
| Green compound | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb), compliant with RoHS 2 and JEDEC MSL-1. |
| Thermal optimization | RθJL = 3.6°C/W enables direct heat transfer from junction to PCB, critical for compact power designs. |
Applications
| Emergency Lighting Circuits | DC Motor Driving (e.g., DC Fans) |
|---|---|
Use Scenario: High-side switch in LED driver circuits for battery-backed emergency lighting systems. IC Role / Device Role / Timing Role: NPN power switch controlling current flow to LED strings during mains failure. Use Value: 75V VCEO accommodates 48V battery + surge margin; AEC-Q101 ensures long-term reliability in safety-critical lighting. |
Use Scenario: PWM-controlled speed regulation of 24V/3A brush DC fans in industrial enclosures. IC Role / Device Role / Timing Role: Low-saturation switch in emitter-follower configuration driving fan windings. Use Value: 78 mΩ RCE(sat) limits conduction loss to <1 W at full load, minimizing thermal management overhead. |
| Solenoid & Relay Drivers | DC–DC Module Switching Stage |
Use Scenario: Interface between microcontroller GPIO and 24V/2A solenoid valves in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Current-amplifying switch providing sufficient gate/base drive for inductive load actuation. Use Value: hFE ≥ 300 at 1A ensures single-stage drive from 3.3V MCU outputs with minimal external components. |
Use Scenario: Main switching transistor in non-isolated buck converter supplying 5V/3A to embedded controllers. IC Role / Device Role / Timing Role: High-current, medium-voltage switch in synchronous or diode-OR'd topology. Use Value: 140 MHz fT and fast ton/toff support 100 kHz switching with low dead-time loss. |
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 (100V), lower IC (2A), SOT23 package, RCE(sat) = 120 mΩ @ 1A | Better voltage margin but lower current capability; unsuitable for 3A+ continuous loads | Select when space-constrained layout prioritizes footprint over current rating |
| MJD122G | TO-252 package, VCEO = 100V, IC = 5A, RCE(sat) = 150 mΩ @ 3A, no AEC-Q101 qualification | Higher current capacity but larger footprint and no automotive qualification | Select for non-automotive 5A applications where thermal mass outweighs board space constraints |
Compared with ZXTN19020CFH and MJD122G, FCX1053ATA uniquely balances 3A continuous current, 75V rating, AEC-Q101 compliance, and SOT89 thermal performance-making it optimal for space- and reliability-constrained industrial switching where 4.5A peak pulses occur.
Availability
FCX1053ATA is available at Aetrix Electronics and suitable for emergency lighting circuits, DC motor driving (including DC fans), and solenoid/relay drivers requiring stable component supply and automotive-grade reliability.
Supply support for FCX1053ATA 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 power management, signal integrity, and protection solutions.
The FCX1053ATA belongs to Diodes' FCX series of medium-power transistors designed specifically for industrial and automotive switching applications demanding AEC-Q101 qualification, low saturation voltage, and stable gain across wide current ranges.
FAQ
Is FCX1053ATA pin-compatible with other SOT89 NPN transistors?
No-pin order is Collector–Emitter–Base (C–E–B) in top view, with Collector as the exposed pad. This differs from many SOT89 devices using C–B–E or E–B–C layouts. PCB layout must match the documented pin-out: left pin = C, center = E, right = B, with thermal pad tied to collector potential.
What is the maximum safe operating temperature for FCX1053ATA?
The absolute maximum junction temperature is +150°C, and storage temperature range is –55°C to +150°C. For reliable long-term operation, keep TJ ≤ 125°C using appropriate copper area and airflow; derating begins above +25°C ambient per the published thermal curves.
Does FCX1053ATA require a heatsink in typical applications?
Not as a discrete heatsink-its SOT89 package relies on PCB copper as the thermal path. With ≥50 mm² of 1oz copper connected to the exposed collector pad, it dissipates 2.0W at TA = 25°C. Smaller copper areas require power derating per the datasheet's RθJA curves.
Can FCX1053ATA replace MOSFETs in gate-driving applications?
Yes-it is explicitly recommended for MOSFET gate drivers due to its high hFE (>300 at 1A), low VCE(sat), and ability to source/sink >100 mA base current. Unlike MOSFETs, it provides current gain, reducing drive circuit complexity when interfacing with low-current logic sources.
FCX1053ATA 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):
- 3 A
- Voltage - Collector Emitter Breakdown (Max):
- 75 V
- Vce Saturation (Max) @ Ib, Ic:
- 440mV @ 200mA, 4.5A
- Current - Collector Cutoff (Max):
- 10nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 500mA, 2V
- Power - Max:
- 2 W
- Frequency - Transition:
- 140MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
FCX1053ATA FAQ
1.How can I place an order for FCX1053ATA through Aetrix?
Please submit a Request for Quotation (RFQ) for FCX1053ATA 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 FCX1053ATA reliable?
The price and inventory of FCX1053ATA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FCX1053ATA is usually 5 days.
3.What payment methods are accepted for FCX1053ATA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FCX1053ATA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FCX1053ATA?
FCX1053ATA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FCX1053ATA 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 FCX1053ATA?
For technical support, including FCX1053ATA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FCX1053ATA requirements.
6.How does Aetrix verify that FCX1053ATA is sourced from the original manufacturer or authorized distributors?
All FCX1053ATA 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 FCX1053ATA meets industry standards.
7.What is the process for return or replacement of FCX1053ATA?
All FCX1053ATA units undergo pre-shipment inspection (PSI). If there is an issue with FCX1053ATA, 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 FCX1053ATA part is unused and in its original packaging.
Return procedure for FCX1053ATA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FCX1053ATA Tags
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