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Diodes Incorporated FCX1047ATA
- Part No.:
- FCX1047ATA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
FCX1047ATA.pdf
- Description:
- TRANS NPN 10V 4A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,052
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Product details
Overview
FCX1047ATA from Diodes Incorporated is a 10V NPN medium-power transistor in SOT89 package, rated for 4A continuous collector current and 20A peak pulse current, with VCE(sat) = 40 mΩ at 4A and hFE ≥ 280 @ IC = 1A. It serves as a high-current switching element in DC-DC modules, motor drivers, and MOSFET gate drivers.
For engineers reviewing the FCX1047ATA datasheet, FCX1047ATA pinout, FCX1047ATA application, or FCX1047ATA equivalent, key selection criteria include its low RCE(sat), AEC-Q101 qualification, thermal resistance of 62.5°C/W on 50mm×50mm copper, and robust hFE retention up to 20A - critical for automotive and industrial power switching designs.
Technical Context
This NPN transistor operates with VCEO = 10V and VCBO = 35V, enabling use in low-voltage, high-current switching where voltage headroom is constrained but current drive capability is essential. Its fT = 150 MHz supports fast switching transitions in PWM-driven loads.
The device features an exposed collector pad thermally coupled to PCB copper, delivering RθJL = 3.6°C/W and enabling stable operation up to +150°C junction temperature. ESD ratings meet HBM 4 kV and MM 400 V per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 10 V - Maximum safe collector-emitter voltage under DC operation; defines upper limit for low-voltage power switch applications. |
| IC (continuous) | 4 A - Sustained collector current capability; enables direct driving of small DC motors or solenoids without heatsinking on adequate copper. |
| VCE(sat) @ 4A | 40 mΩ - Low saturation resistance minimizes conduction loss (Ploss ≈ 0.64 W at 4A), improving efficiency in high-duty-cycle switches. |
| hFE @ 1A | 280–300 - High DC current gain reduces required base drive current, easing interface with microcontrollers or logic-level drivers. |
| RθJA (50mm×50mm) | 62.5 °C/W - Thermal resistance achievable with large PCB copper area; allows ~2W dissipation before reaching 150°C TJ at 25°C ambient. |
| fT | 150 MHz - Transition frequency supports clean turn-on/turn-off in PWM frequencies up to several hundred kHz without excessive delay. |
| ESD HBM | 4,000 V - Robust electrostatic immunity simplifies handling and board-level ESD protection design in manufacturing environments. |
Pinout & Package
Package: SOT89 - surface-mount, 3-terminal plastic package with exposed collector pad for enhanced thermal dissipation. Molded "Green" compound (UL 94V-0), lead-free, halogen- and antimony-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Main current output path, electrically connected to exposed metal pad | Primary thermal path to PCB; must be soldered to ≥15 mm² copper for rated power handling. |
| Emiter (E) | Current return node, common reference for load | Low-inductance connection point; used as ground-side switch configuration in high-side driver circuits. |
| Base (B) | Control input for transistor biasing | Requires ~50 mA drive for full saturation at 4A; compatible with standard logic buffers and MCU GPIOs via series resistor. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress - suitable for under-hood and lighting control modules. |
| hFE ≥ 200 up to IC = 20A | Maintains usable current gain even during short-duration peak loads, enabling predictable switching behavior in surge-prone applications like relay coil snubbing. |
| RCE(sat) = 40 mΩ @ 4A | Reduces conduction losses by >30% vs. comparable SOT89 transistors, directly lowering thermal load in compact DC-DC converter designs. |
| Exposed collector pad | Enables direct thermal coupling to PCB; achieves RθJL = 3.6°C/W - critical for maintaining TJ < 125°C in fanless industrial enclosures. |
| Lead-free & "Green" construction | Complies with RoHS 2 and halogen-free mandates (Br+Cl < 1500 ppm, Sb < 1000 ppm); accepted in medical and consumer electronics supply chains. |
Applications
| Emergency Lighting Control | DC Fan Motor Driver |
|---|---|
Use Scenario: Switching high-brightness LED strings during AC mains failure using battery-backed boost converter. IC Role / Device Role / Timing Role: NPN power switch controlling current path between battery and LED driver IC. Use Value: Low VCE(sat) minimizes voltage drop across switch, preserving battery runtime; AEC-Q101 rating ensures long-term reliability in safety-critical installations. |
Use Scenario: Driving 12V brushless DC fans in industrial HVAC controllers with PWM speed regulation. IC Role / Device Role / Timing Role: Low-side switching element modulating fan current at 25 kHz PWM frequency. Use Value: 150 MHz fT ensures sharp edge fidelity, reducing audible noise and EMI; hFE stability at 4A avoids gate-drive scaling issues across production lots. |
| Solenoid Actuator Interface | Backlight Inverter Primary Switch |
Use Scenario: Energizing 24V/2A solenoid valves in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: High-current discrete switch replacing mechanical relays for faster response and longer lifetime. Use Value: 20A ICM safely absorbs inductive kickback energy when de-energized; RθJA = 62.5°C/W prevents thermal shutdown during burst-mode operation. |
Use Scenario: Switching primary winding of CCFL backlight transformer in industrial display power supplies. IC Role / Device Role / Timing Role: Fast-switching NPN transistor operating in resonant flyback topology at ~50 kHz. Use Value: Low Cobo = 85 pF and fast ton/toff (130/230 ns) reduce switching losses and improve waveform symmetry in high-voltage AC generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN medium-power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTN1047ZTA | VCEO = 12V, IC = 3A, RCE(sat) = 60 mΩ @ 3A; SOT89 package, same pinout | Lower current rating and higher saturation voltage limit use in 3A-class loads only; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and 4A margin is unnecessary. |
| MJD127G | VCEO = 100V, IC = 2A, RCE(sat) = 1.2 Ω @ 2A; TO-220 package, higher thermal mass | Higher voltage rating but lower current and much higher VCE(sat); requires heatsink for >1A continuous | Choose only if system requires >35V breakdown or legacy through-hole assembly is mandated. |
Compared with ZXTN1047ZTA and MJD127G, FCX1047ATA uniquely balances 4A current, 10V VCEO, sub-50mΩ RCE(sat), and AEC-Q101 compliance in SOT89 - making it optimal for space-constrained, thermally demanding, and automotive-qualified 12V/24V power switching.
Availability
FCX1047ATA is available at Aetrix Electronics and suitable for emergency lighting circuits, DC fan motor drivers, and solenoid actuator interfaces requiring stable component supply across automotive, industrial, and medical equipment programs.
Supply support for FCX1047ATA 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 for industrial, automotive, and computing markets.
The FCX1047ATA belongs to Diodes' FCX series of medium-power bipolar transistors, engineered specifically for high-current, low-saturation switching in compact surface-mount formats - targeting replacement of electromechanical relays and enhancement of efficiency in 12V–24V power systems.
FAQ
What is the maximum allowable junction temperature for FCX1047ATA?
The absolute maximum junction temperature is +150°C, as specified in the Absolute Maximum Ratings table. Operation above this temperature risks permanent degradation of hFE and increased leakage. Derating curves confirm that with 50mm×50mm 1oz copper, full 2.0W power dissipation is permissible only below +25°C ambient; above that, linear derating applies at 16 mW/°C.
Can FCX1047ATA be used in high-frequency switching applications above 100 kHz?
Yes - its fT = 150 MHz and fast switching times (ton = 130 ns, toff = 230 ns) support reliable operation up to 500 kHz in hard-switched topologies. However, layout must minimize trace inductance and ensure low-impedance base drive; parasitic capacitance (Cobo = 85 pF) becomes significant above 1 MHz.
Is FCX1047ATA pin-compatible with other SOT89 NPN transistors?
Yes - it follows standard SOT89 pinout (Collector–Emitter–Base, left-to-right top view), matching industry-standard footprints including ZXTN1047ZTA and MMBT4401. The exposed collector pad is electrically and thermally identical across compliant SOT89 devices, enabling direct PCB footprint reuse.
Does FCX1047ATA require external base resistors when driven by a 3.3V MCU GPIO?
Yes - with VBE(sat) ≈ 920 mV and required IB = 50 mA for 4A saturation, a 3.3V GPIO needs a series resistor of ~48 Ω to deliver correct base current. A 47 Ω ±5% resistor is recommended; omitting it risks incomplete saturation and excessive power dissipation in the transistor.
FCX1047ATA 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):
- 4 A
- Voltage - Collector Emitter Breakdown (Max):
- 10 V
- Vce Saturation (Max) @ Ib, Ic:
- 350mV @ 25mA, 5A
- Current - Collector Cutoff (Max):
- 10nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 1A, 2V
- Power - Max:
- 2 W
- Frequency - Transition:
- 150MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
FCX1047ATA FAQ
1.How can I place an order for FCX1047ATA through Aetrix?
Please submit a Request for Quotation (RFQ) for FCX1047ATA 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 FCX1047ATA reliable?
The price and inventory of FCX1047ATA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FCX1047ATA is usually 5 days.
3.What payment methods are accepted for FCX1047ATA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FCX1047ATA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FCX1047ATA?
FCX1047ATA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FCX1047ATA 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 FCX1047ATA?
For technical support, including FCX1047ATA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FCX1047ATA requirements.
6.How does Aetrix verify that FCX1047ATA is sourced from the original manufacturer or authorized distributors?
All FCX1047ATA 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 FCX1047ATA meets industry standards.
7.What is the process for return or replacement of FCX1047ATA?
All FCX1047ATA units undergo pre-shipment inspection (PSI). If there is an issue with FCX1047ATA, 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 FCX1047ATA part is unused and in its original packaging.
Return procedure for FCX1047ATA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FCX1047ATA Tags
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MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
onsemi
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MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
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