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Diodes Incorporated FMMT593TA
- Part No.:
- FMMT593TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
FMMT593TA.pdf
- Description:
- TRANS PNP 100V 1A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:26,232
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Product details
Overview
FMMT593TA from Diodes Incorporated is a 100V PNP high-voltage transistor in SOT23 (Type DN) package, designed for high-side switching and load disconnect applications. It delivers -1A continuous collector current, -100V VCEO, and low -300mV VCE(sat) at -500mA/-50mA drive, enabling efficient power control in motor drives and industrial power management circuits.
For engineers reviewing the FMMT593TA datasheet, FMMT593TA pinout, FMMT593TA application, or FMMT593TA equivalent, key selection criteria include verified high-voltage blocking (-100V VCEO), robust pulse capability (-2A ICM), thermal performance (RθJA = 250°C/W), and complementary pairing with FMMT493 for push-pull designs.
Technical Context
This PNP bipolar junction transistor operates in linear and saturated switching modes, with hFE maintained at ≥100 up to -1A collector current and VCE = -5V. Its -120V VCBO rating supports high-impedance collector node isolation in off-state configurations.
The device uses a planar epitaxial structure with optimized base doping and geometry to achieve stable gain across temperature and current range, while its SOT23 (Type DN) leadframe design ensures reliable thermal conduction to PCB copper and consistent solder joint integrity under reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -100 V - Enables safe operation in 80V rail systems with 25% voltage margin |
| IC (cont.) | -1 A - Supports sustained load currents up to 1A without derating on 15×15mm FR4 |
| VCE(sat) | -300 mV @ -500mA/-50mA - Limits conduction loss to ≤150mW in saturated switch mode |
| hFE | 100–300 @ -1mA to -1A - Ensures predictable base drive requirements across full operating range |
| fT | 50 MHz - Supports switching frequencies up to ~5MHz with acceptable gain roll-off |
| RθJA | 250 °C/W - Requires minimum 15×15mm 1oz copper pad for full 500mW power dissipation |
| PD | 500 mW - Maximum steady-state power at TA = +25°C with specified PCB layout |
Pinout & Package
Package: SOT23 (Type DN), surface-mount plastic package with matte tin-plated leads, moisture sensitivity level 1 per J-STD-020, weight ≈ 0.008 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Current source terminal; connects to positive supply rail in high-side switch configuration |
| 2 (Base) | B | Control input; requires negative bias relative to emitter to turn on PNP device |
| 3 (Collector) | C | Output terminal; sinks load current to ground or lower potential node |
Key Features
| Feature | Design Value |
|---|---|
| High voltage blocking | VCEO = -100V enables use in 72–80V industrial bus systems with safety margin |
| Low saturation voltage | VCE(sat) ≤ -300mV reduces conduction loss and self-heating in DC load switching |
| Stable current gain | hFE ≥ 100 at -1A ensures predictable base drive sizing across production lots |
| Complementary pairing | FMMT493 NPN counterpart allows matched push-pull or H-bridge implementation |
Applications
| High-Side Drivers | Load Disconnect Switches |
|---|---|
Use Scenario: Controlling power delivery to downstream modules in automotive body control units. IC Role / Device Role / Timing Role: PNP transistor configured as high-side switch, sourcing current from battery rail to load. Use Value: -100V VCEO withstands load dump transients; -300mV VCE(sat) minimizes voltage drop during active conduction. | Use Scenario: Isolating auxiliary circuits (e.g., sensors, LEDs) during system sleep mode. IC Role / Device Role / Timing Role: Discrete PNP switch enabling controlled power gating with fast turn-off via base pull-up. Use Value: Low leakage (< -100nA ICES) prevents standby current drain; SOT23 footprint saves board space. |
| Motor Drives | Industrial Power Management |
Use Scenario: Driving small DC motors (e.g., fans, actuators) in programmable logic controllers. IC Role / Device Role / Timing Role: Single-ended switch in half-bridge topology, handling bidirectional current during PWM commutation. Use Value: -2A ICM supports motor stall current surges; fT = 50MHz allows clean PWM edge response. | Use Scenario: Regulating auxiliary 5V/3.3V rails in telecom power supplies using discrete linear regulators. IC Role / Device Role / Timing Role: Pass element in emitter-follower configuration, dissipating up to 500mW continuously. Use Value: RθJA = 250°C/W permits thermal design with standard FR4 layout; hFE stability simplifies feedback loop compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP high-voltage switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTN25050DFHTA | VCEO = -50V, IC = -1.5A, SOT23 package, higher hFE (200–400) | Limited to ≤40V systems; better for high-gain, low-drive applications | Select when lower base current and reduced drive complexity outweigh voltage margin needs |
| MMBT5401 | VCEO = -60V, IC = -0.6A, SOT23 package, lower cost, wider availability | Not suitable for 72V+ rails; insufficient for 1A continuous loads | Choose only for ≤48V, <500mA applications where cost and stock priority exceed voltage headroom |
Compared with ZXTN25050DFHTA and MMBT5401, FMMT593TA uniquely balances -100V blocking, -1A continuous current, and SOT23 form factor-making it the only option among the three qualified for 80V industrial bus switching with minimal PCB area.
Availability
FMMT593TA is available at Aetrix Electronics and suitable for high-side drivers, load disconnect switches, and motor drives requiring stable component supply in automotive, industrial control, and power management designs.
Supply support for FMMT593TA 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, manufacturing, and sales operations across Asia, Europe, and North America.
FMMT593TA belongs to Diodes' FMMT series of high-voltage SOT23 transistors, engineered specifically for compact, high-reliability switching in space-constrained industrial and automotive power interfaces.
FAQ
What is the maximum safe operating voltage for FMMT593TA in continuous DC applications?
The absolute maximum collector-emitter voltage (VCEO) is -100V at TA = +25°C. For reliable long-term operation, design should limit steady-state VCE to ≤ -80V to maintain margin against transients, temperature drift, and process variation. Derating is required above +25°C ambient per the published thermal curve.
Can FMMT593TA be used as a direct replacement for MMBT5401 in existing designs?
No-FMMT593TA is not a drop-in replacement for MMBT5401 due to its higher -100V VCEO rating and -1A IC capability. While pin-compatible in SOT23, its higher voltage rating may alter bias network behavior, and its higher current capacity requires verification of PCB trace ratings and thermal relief design.
What is the recommended base resistor value for switching a 500mA load at 12V supply?
With VBE(sat) ≈ -1.1V and hFE ≥ 100 at -500mA, a base current of -5mA is sufficient. Using a 12V control signal referenced to emitter, a 2.2kΩ resistor yields -5mA (accounting for -1.1V drop), ensuring hard saturation while limiting base power dissipation to <6mW.
Does FMMT593TA meet AEC-Q101 qualification for automotive use?
FMMT593TA is not AEC-Q101 qualified per Diodes' official documentation. It is rated for industrial temperature range (-55°C to +150°C) and RoHS/Green compliance, but automotive-grade change control, PPAP, and IATF 16949 manufacturing require contacting Diodes directly for qualified variants such as FMMT593QTA.
FMMT593TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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 @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 500mA, 5V
- Power - Max:
- 500 mW
- Frequency - Transition:
- 50MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
FMMT593TA FAQ
1.How can I place an order for FMMT593TA through Aetrix?
Please submit a Request for Quotation (RFQ) for FMMT593TA 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 FMMT593TA reliable?
The price and inventory of FMMT593TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FMMT593TA is usually 5 days.
3.What payment methods are accepted for FMMT593TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FMMT593TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FMMT593TA?
FMMT593TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FMMT593TA 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 FMMT593TA?
For technical support, including FMMT593TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FMMT593TA requirements.
6.How does Aetrix verify that FMMT593TA is sourced from the original manufacturer or authorized distributors?
All FMMT593TA 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 FMMT593TA meets industry standards.
7.What is the process for return or replacement of FMMT593TA?
All FMMT593TA units undergo pre-shipment inspection (PSI). If there is an issue with FMMT593TA, 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 FMMT593TA part is unused and in its original packaging.
Return procedure for FMMT593TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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