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Diodes Incorporated FCX1151ATA
- Part No.:
- FCX1151ATA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
FCX1151ATA.pdf
- Description:
- TRANS PNP 40V 3A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,115
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Product details
Overview
FCX1151ATA from Diodes Incorporated is a -40V, -3A PNP power transistor in SOT89 package, featuring VCE(sat) < -220mV at -1A, RCE(sat) = 66mΩ at -3A, and AEC-Q101 qualification for automotive-grade reliability. It serves as a high-current switching element in motor drivers, solenoid/relay control, and DC-DC module power stages.
For engineers reviewing the FCX1151ATA datasheet, FCX1151ATA pinout, FCX1151ATA application, or FCX1151ATA equivalent, key selection criteria include verified VCE(sat) performance at -3A, thermal resistance (RθJL = 3.6°C/W), AEC-Q101 compliance, and SOT89 thermal pad layout compatibility with 50mm² copper area.
Technical Context
This PNP bipolar junction transistor operates in linear or saturated switching mode with guaranteed BVCBO ≥ -45V and BVCEO = -40V. Its low saturation voltage and high current capability support efficient power switching in DC loads up to 3A continuous.
Thermal design is enabled by an exposed collector pad with RθJL = 3.6°C/W and RθJA = 62.5°C/W on 50mm × 50mm 1oz FR-4 PCB. The device delivers hFE = 100–450 across IC = -0.01A to -3A, enabling stable base-driven control in industrial and automotive power interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -40V - Maximum safe collector-emitter voltage before breakdown under open-base conditions |
| IC (cont) | -3A - Continuous collector current rating defining maximum steady-state load drive capability |
| VCE(sat) | < -220mV @ -1A - Low conduction loss enabling high-efficiency switching in power stages |
| RCE(sat) | 66mΩ @ -3A - Effective on-resistance derived from VCE(sat)/IC, critical for thermal management |
| PD | 2.0W - Maximum power dissipation achievable with 50mm × 50mm 1oz copper heatsinking |
| hFE | 100–450 - DC current gain range across operating currents, supporting robust base drive design |
| fT | 145MHz - Transition frequency confirming suitability for medium-speed switching (≤100kHz) |
Pinout & Package
Package: SOT89 - surface-mount plastic package with exposed collector pad for enhanced thermal conduction; dimensions per Diodes Inc. outline H1/E/D1/D2/E2 (4.50 × 2.50 × 1.50 mm); moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Current source terminal; connects to positive rail in high-side PNP switch configuration |
| 2 (Collector) | C | Main current sink terminal; electrically tied to exposed metal pad for thermal and electrical grounding |
| 3 (Base) | B | Control input; requires ~250mA base drive to saturate at -3A collector current |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics |
| RθJL = 3.6°C/W | Enables direct thermal coupling to PCB copper, reducing junction temperature rise under 3A load |
| VCE(sat) < -220mV @ -1A | Minimizes conduction loss and self-heating in fan/motor driver circuits operating near rated current |
| Lead-free, halogen-free, RoHS-compliant | Meets global environmental regulations without compromising solderability or long-term reliability |
| ESD HBM = 4kV | Provides robust handling during assembly and operation in industrial environments with moderate ESD exposure |
Applications
| DC Motor Control | Solenoid & Relay Driving |
|---|---|
Use Scenario: Driving brushed DC fans in automotive HVAC systems requiring 2–3A peak current. IC Role / Device Role / Timing Role: High-side PNP switch controlling current flow from battery to motor winding. Use Value: Low VCE(sat) reduces power loss and heat generation, extending fan lifetime in confined enclosures. |
Use Scenario: Energizing 12V automotive relays and fuel injectors with pulsed 3A loads. IC Role / Device Role / Timing Role: Saturated switch delivering fast turn-on/turn-off (ton = 170ns, toff = 460ns) for precise actuation timing. Use Value: High ICM = -5A supports surge currents during relay coil inrush without secondary protection. |
| DC-DC Converter Power Stage | MOSFET Gate Driver Interface |
Use Scenario: Low-side switch in non-synchronous buck converter output stage for 5–12V auxiliary supplies. IC Role / Device Role / Timing Role: Current-switching element handling continuous 3A output with thermal derating down to +125°C ambient. Use Value: RCE(sat) = 66mΩ ensures <100mW conduction loss at full load, simplifying thermal design. |
Use Scenario: Level-shifting and current-boosting stage driving high-capacitance N-channel MOSFET gates in half-bridge inverters. IC Role / Device Role / Timing Role: PNP emitter-follower providing >200mA peak gate sink current with minimal propagation delay. Use Value: fT = 145MHz enables clean gate waveform edges up to 50kHz switching frequencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZTX951 | VCEO = -60V, IC = -2A, RθJA = 120°C/W (SOT223), no AEC-Q101 qualification | Higher voltage margin but lower current and thermal performance; suited for non-automotive 24V industrial controls | Select when higher breakdown voltage is prioritized over current capacity and automotive qualification |
| BCP53-16 | VCEO = -45V, IC = -1.5A, VCE(sat) = -300mV @ -1A, SOT223 package | Lower current rating and higher saturation voltage; limited to ≤1.5A loads with less stringent thermal constraints | Choose for cost-sensitive consumer applications where AEC-Q101 is not required and power density is lower |
Compared with ZTX951 and BCP53-16, FCX1151ATA uniquely combines AEC-Q101 qualification, -3A continuous current, and 66mΩ effective on-resistance in SOT89-making it optimal for space-constrained, thermally demanding automotive and industrial switching where reliability and power density are critical.
Availability
FCX1151ATA is available at Aetrix Electronics and suitable for DC motor control, solenoid/relay driving, and DC-DC module power stages requiring stable component supply with automotive-grade reliability and thermal performance.
Supply support for FCX1151ATA 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 automotive, industrial, and computing markets.
The FCX1151ATA belongs to Diodes' AEC-Q101-qualified power transistor family designed specifically for high-current, thermally constrained switching in automotive body electronics and industrial actuators.
FAQ
What is the maximum allowable junction temperature for FCX1151ATA?
The FCX1151ATA has an operating junction temperature range of -55°C to +150°C. Its absolute maximum TJ is +150°C, and thermal derating begins above +25°C ambient, with full 2.0W power dissipation only possible on 50mm × 50mm 1oz copper. Exceeding this limit risks parametric shift and long-term reliability degradation.
Can FCX1151ATA be used in parallel configurations?
Yes, but with careful attention to current sharing. The device's hFE variation (100–450) and VBE(sat) tolerance (-985 to -1050mV) require individual base resistors and matched thermal mounting. Parallel use is validated only with identical PCB copper area and forced airflow, and is not recommended beyond two devices without external current sensing.
Is the exposed collector pad electrically isolated from other pins?
No-the exposed collector pad is electrically connected to Pin 2 (Collector). It must be soldered to a dedicated PCB copper pour tied to the collector net. Using it as a thermal pad only (floating) violates the device's thermal specification and voids the RθJL = 3.6°C/W rating.
Does FCX1151ATA support pulse-width modulation (PWM) switching?
Yes-it is characterized for switching with ton = 170ns and toff = 460ns at -2A, supporting PWM frequencies up to 100kHz in well-designed layouts. However, its bipolar nature limits efficiency above 50kHz due to storage time; gate drivers or MOSFET alternatives are preferred for >200kHz operation.
FCX1151ATA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 3 A
- Voltage - Collector Emitter Breakdown (Max):
- 40 V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 250mA, 3A
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 250 @ 500mA, 2V
- Power - Max:
- 2 W
- Frequency - Transition:
- 145MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
FCX1151ATA FAQ
1.How can I place an order for FCX1151ATA through Aetrix?
Please submit a Request for Quotation (RFQ) for FCX1151ATA 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 FCX1151ATA reliable?
The price and inventory of FCX1151ATA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FCX1151ATA is usually 5 days.
3.What payment methods are accepted for FCX1151ATA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FCX1151ATA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FCX1151ATA?
FCX1151ATA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FCX1151ATA 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 FCX1151ATA?
For technical support, including FCX1151ATA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FCX1151ATA requirements.
6.How does Aetrix verify that FCX1151ATA is sourced from the original manufacturer or authorized distributors?
All FCX1151ATA 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 FCX1151ATA meets industry standards.
7.What is the process for return or replacement of FCX1151ATA?
All FCX1151ATA units undergo pre-shipment inspection (PSI). If there is an issue with FCX1151ATA, 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 FCX1151ATA part is unused and in its original packaging.
Return procedure for FCX1151ATA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FCX1151ATA Tags
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Diodes Incorporated
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