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Diodes Incorporated FCX593TA
- Part No.:
- FCX593TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
FCX593TA.pdf
- Description:
- TRANS PNP 100V 1A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:517
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Product details
Overview
FCX593TA from Diodes Incorporated is a 100V PNP medium-power transistor in SOT89 package, rated for -1A continuous collector current and -2A peak pulse current, with VCE(sat) < -200mV at -250mA, used in automotive power control and industrial DC-DC converter switching stages.
For engineers reviewing the FCX593TA datasheet, FCX593TA pinout, FCX593TA application, or FCX593TA equivalent, key selection criteria include breakdown voltage (VCEO = -100V), thermal resistance (RθJA = 125°C/W on 15mm×15mm 1oz Cu), hFE range (100–300), and AEC-Q101 qualification for high-reliability environments.
Technical Context
This PNP bipolar junction transistor operates in linear and saturated switching modes, supporting DC biasing and pulse-width modulated load control. Its -100V VCEO rating enables use in 48V and 60V industrial bus systems, while low VCE(sat) minimizes conduction loss at -250mA to -1A collector currents.
The device features complementary pairing with FCX493 (NPN), enabling push-pull and H-bridge topologies. Thermal design relies on the exposed collector pad - RθJL = 22°C/W and RθJC = 16°C/W confirm direct heat path capability when soldered to PCB copper pour.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -100 V - supports 48V rail switching with 2× safety margin |
| IC (cont.) | -1 A - drives solenoids, relays, and LED arrays without forced cooling |
| VCE(sat) | < -0.2 V @ -250mA - reduces power loss to < 50 mW in saturation |
| hFE | 100–300 @ IC = -1mA to -1A - ensures stable base drive across operating range |
| RθJA | 125 °C/W - requires ≥15mm×15mm 1oz Cu pad for 1W operation at TA = +70°C |
| fT | 50 MHz - suitable for PWM frequencies up to ~500 kHz with gain margin |
| ESD HBM | 4000 V - withstands handling in standard assembly environments |
Pinout & Package
SOT89 package with exposed collector pad for thermal dissipation; molded green compound, matte tin-plated leads, weight ≈ 0.05 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Main current sink terminal | Exposed metal pad - primary thermal path to PCB; must be connected to ground or low-impedance return plane |
| Emitter (E) | Current source reference | Connected to positive supply rail in high-side switch configurations |
| Base (B) | Control input | Receives current-limited drive signal; typical IB = -25mA for full saturation at IC = -250mA |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including temperature cycling, humidity, and mechanical shock |
| Lead-free & halogen-free | Meets RoHS 2 and JEDEC J-STD-020 Level 1 moisture sensitivity without post-bake requirements |
| Low VCE(sat) | Enables >95% efficiency in 12–48V load switches operating at ≤1A DC |
| Complementary NPN pair | FCX493 shares identical SOT89 footprint and thermal profile for matched push-pull designs |
| High BVCBO | -120 V rating allows safe operation with transient spikes up to ±100V in industrial motor drives |
Applications
| Automotive Body Control Module | Industrial DC-DC Converter |
|---|---|
Use Scenario: Switching 12V/24V loads such as door locks, HVAC actuators, and lighting circuits. IC Role / Device Role / Timing Role: High-side PNP switch controlled by microcontroller GPIO via base resistor network. Use Value: -100V VCEO withstands load-dump transients; -200mV VCE(sat) limits self-heating during continuous 500mA operation. | Use Scenario: Synchronous rectification or pre-regulator stage in isolated flyback or forward converters. IC Role / Device Role / Timing Role: PNP pass transistor in linear pre-regulator or active clamp circuit. Use Value: 50MHz fT supports fast turn-off for <1µs dead-time control; RθJC = 16°C/W enables compact heatsinking. |
| Telecom Power Supply | Programmable Load Bank |
Use Scenario: Overvoltage protection crowbar or redundant backup supply enable/disable. IC Role / Device Role / Timing Role: Fast-turn-on crowbar transistor triggered by comparator output during overvoltage events. Use Value: -2A ICM handles short-circuit surge; ESD HBM = 4kV prevents false triggering from board-level noise. | Use Scenario: Precision electronic load element for battery discharge testing and power supply validation. IC Role / Device Role / Timing Role: Linear-mode current sink controlled by DAC-driven base voltage. Use Value: hFE stability across -1mA to -1A ensures accurate current regulation; RθJL = 22°C/W supports thermal feedback loop integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP medium-power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZTX788B | VCEO = -80V, IC = -1A, RθJA = 150°C/W (SOT89) | Lacks AEC-Q101 qualification; lower breakdown margin for 48V systems | Select only for non-automotive cost-sensitive designs where -80V rating suffices |
| MJD2955T4G | VCEO = -70V, IC = -10A, TO-220 package, RθJA = 50°C/W | Higher current but larger footprint and no AEC-Q101; unsuitable for space-constrained PCBs | Choose when >1A continuous current or higher thermal mass is required, not for SOT89 drop-in replacement |
Compared with ZTX788B and MJD2955T4G, FCX593TA uniquely balances AEC-Q101 compliance, -100V robustness, and SOT89 thermal performance - making it optimal for automotive and industrial modules where reliability, size, and 48V compatibility intersect.
Availability
FCX593TA is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC-DC converters, and telecom power supplies requiring stable component supply and long-term lifecycle support.
Supply support for FCX593TA 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 components for automotive, industrial, and computing markets.
The FCX593 belongs to Diodes' medium-power bipolar transistor product line, engineered for robust switching and linear operation in harsh environments - particularly targeting AEC-Q101-compliant automotive subsystems and industrial power interfaces.
FAQ
What is the maximum allowable junction temperature for FCX593TA?
The FCX593TA has an operating junction temperature range of -55°C to +150°C. At ambient temperatures above +70°C, derating is required: power dissipation must be reduced linearly from 1.0W at +25°C to zero at +150°C, based on RθJA = 125°C/W for standard mounting on 15mm×15mm 1oz copper.
Can FCX593TA be used in linear regulator applications?
Yes - its hFE stability (100–300) across -1mA to -1A and low VCE(sat) support linear pass transistor use. However, thermal design is critical: at 1A and 5V dropout, 5W dissipation exceeds its 1W rating, so operation must stay within PD ≤ 1W with appropriate copper area and airflow.
Is FCX593TA pin-compatible with FCX493?
No - FCX593TA (PNP) and FCX493 (NPN) share the same SOT89 package outline and pin assignment (C-E-B), but their polarity and biasing requirements differ. They are complementary in function, not drop-in replacements; circuit topology must be adjusted for emitter/base reversal in push-pull layouts.
Does FCX593TA require special PCB layout considerations?
Yes - the exposed collector pad must be connected to a ≥15mm×15mm 1oz copper area for thermal performance. Creepage and clearance distances must comply with IPC-2221 for -100V working voltage, especially in high-humidity or automotive environments; recommended minimum creepage is 2.5mm per 100V.
FCX593TA 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):
- 1 A
- Voltage - Collector Emitter Breakdown (Max):
- 100 V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 25mA, 250mA
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 500mA, 5V
- Power - Max:
- 1 W
- Frequency - Transition:
- 50MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
FCX593TA FAQ
1.How can I place an order for FCX593TA through Aetrix?
Please submit a Request for Quotation (RFQ) for FCX593TA 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 FCX593TA reliable?
The price and inventory of FCX593TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FCX593TA is usually 5 days.
3.What payment methods are accepted for FCX593TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FCX593TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FCX593TA?
FCX593TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FCX593TA 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 FCX593TA?
For technical support, including FCX593TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FCX593TA requirements.
6.How does Aetrix verify that FCX593TA is sourced from the original manufacturer or authorized distributors?
All FCX593TA 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 FCX593TA meets industry standards.
7.What is the process for return or replacement of FCX593TA?
All FCX593TA units undergo pre-shipment inspection (PSI). If there is an issue with FCX593TA, 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 FCX593TA part is unused and in its original packaging.
Return procedure for FCX593TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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