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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Diodes Incorporated FMMT589TA

Name: FMMT589TA
Brand: Diodes Incorporated
SKU: FMMT589TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FMMT589TA

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: FMMT589TA.pdf

Description:: TRANS PNP 30V 1A SOT-23-3

Quantity:: RFQ Add To RFQ list

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Inventory:19,132

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Product details

Overview

FMMT589TA from Diodes Incorporated is a 30V PNP medium-power high-performance transistor in SOT23 package, rated for -1A continuous collector current and -30V collector-emitter breakdown voltage, with V_CE(sat) < -350mV at -1A and R_SAT = 250mΩ; used in compact DC-DC converter switching stages and load-switching circuits requiring low-loss PNP control.

For engineers reviewing the FMMT589TA datasheet, FMMT589TA pinout, FMMT589TA application, or FMMT589TA equivalent, key selection criteria include verified V_CEO = -30V, I_C = -1A, V_CE(sat) ≤ -350mV @ -1A, h_FE ≥ 100 @ -1mA, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This PNP bipolar junction transistor operates in active and saturation regions with guaranteed BV_CEO = -30V and BV_CBO = -50V, supporting stable switching up to 100MHz f_T under V_CE = -5V, I_C = -100mA conditions. Its low R_SAT of 250mΩ enables efficient power path control in space-constrained designs.

The device features ESD robustness (HBM = 4kV, MM = 400V), operates across -55°C to +150°C, and is qualified to AEC-Q101 standards-making it suitable for automotive body electronics and industrial power management where thermal stability and transient immunity are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	-30V - maximum safe collector-emitter voltage before breakdown in common-emitter configuration
I_C (cont.)	-1A - continuous DC collector current rating defining steady-state power handling capability
V_CE(sat)	< -350mV @ -1A - ensures minimal conduction loss and heat generation in saturated switch mode
h_FE	100 min @ -1mA - provides predictable base drive requirements for reliable turn-on in linear or switching use
f_T	100MHz - usable bandwidth for high-speed switching applications such as PWM-controlled regulators
R_θJA	250°C/W - thermal resistance indicating junction-to-ambient dissipation limit on standard FR4 PCB
ESD HBM	4,000V - human-body-model robustness enabling handling without special ESD precautions in assembly

Pinout & Package

Package: SOT23 - surface-mount plastic package measuring 2.9mm × 1.35mm × 1.0mm (L × W × H), UL 94V-0 rated, with matte tin-plated leads solderable per MIL-STD-202.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Emitter terminal	Current exit point in PNP operation; connects to higher potential rail in high-side switch configurations
2 (Base)	Control input	Accepts negative base current to forward-bias BE junction and enable conduction between C and E
3 (Collector)	Collector terminal	Current entry point; ties to load or lower-potential node in typical PNP switch topologies

Key Features

Feature	Design Value
Low saturation resistance	R_SAT = 250mΩ - reduces I²R losses and self-heating during sustained conduction
AEC-Q101 qualification	Qualified for automotive applications - meets stress-test requirements for temperature cycling, HTRB, and ESD
Green compound packaging	Halogen- and antimony-free molding compound (<900ppm Br/Cl, <1000ppm Sb) - compliant with environmental directives
High peak pulse current	I_CM = -2A - supports short-duration surge loads such as motor startup or capacitor charging transients

Applications

Automotive Body Control Module

Industrial DC-DC Converter

Use Scenario: Driving LED arrays and solenoid valves in door modules and lighting controllers.

IC Role / Device Role / Timing Role: PNP high-side switch controlling 12V loads with fast turn-off and low standby leakage.

Use Value: V_CEO = -30V and I_C = -1A ensure compatibility with 12V automotive systems while maintaining margin against load dump spikes.

Use Scenario: Synchronous rectification or pre-regulator switching in isolated flyback converters.

IC Role / Device Role / Timing Role: Medium-power PNP switch in feedback or auxiliary power path with precise saturation control.

Use Value: V_CE(sat) < -350mV @ -1A minimizes conduction loss and improves efficiency in 5–24V output stages.

Consumer Power Management

Medical Portable Equipment

Use Scenario: Battery reverse-polarity protection and load switching in USB-powered devices.

IC Role / Device Role / Timing Role: Low-leakage PNP pass element enabling bidirectional blocking and controlled power-up sequencing.

Use Value: ICES < -100nA at -30V ensures negligible quiescent current drain during battery standby modes.

Use Scenario: Isolated sensor bias supply and actuator driver in portable diagnostic instruments.

IC Role / Device Role / Timing Role: Reliable, thermally stable switching element operating continuously within -40°C to +85°C ambient range.

Use Value: R_θJA = 250°C/W and T_J range of -55°C to +150°C support long-term reliability in sealed enclosures with limited airflow.

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
ZXTN25050DFHTA	Higher V_CEO (-50V), lower V_CE(sat) (-200mV @ -1A), SOT23-3 but not AEC-Q101 qualified	Better voltage margin and lower loss, but lacks automotive qualification and has different h_FE profile	Select when AEC-Q101 is not required and higher voltage headroom is needed
FMMT591TA	Same SOT23 package and AEC-Q101 qualification, but V_CEO = -60V and I_C = -0.5A - lower current, higher voltage	Used where higher breakdown voltage is prioritized over current capacity, e.g., 24V industrial bus interfaces	Select when system voltage exceeds 30V but load current remains below 500mA

Compared with ZXTN25050DFHTA and FMMT591TA, FMMT589TA uniquely balances -30V V_CEO, -1A I_C, AEC-Q101 compliance, and 250mΩ R_SAT - making it optimal for cost-sensitive, thermally constrained 12V automotive and industrial switching nodes.

Availability

FMMT589TA is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC-DC converters, and consumer power management systems requiring stable component supply and AEC-Q101-compliant performance.

Supply support for FMMT589TA 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.

FMMT589TA belongs to Diodes' FMMT series of high-reliability SOT23 transistors designed specifically for automotive and industrial switching applications demanding AEC-Q101 qualification, low saturation loss, and consistent gain behavior.

FAQ

What is the maximum allowable collector-emitter voltage for FMMT589TA?

The absolute maximum collector-emitter voltage (V_CEO) is -30V, measured with I_C = -10mA at T_A = +25°C. This rating defines the upper limit for safe DC operation in common-emitter configuration; exceeding it risks avalanche breakdown and permanent device damage.

Is FMMT589TA suitable for automotive applications?

Yes - FMMT589TA is qualified to AEC-Q101 standards, including temperature cycling, high-temperature reverse bias, and ESD testing. Its -55°C to +150°C operating range, 4kV HBM ESD rating, and green RoHS-compliant construction meet requirements for under-hood and cabin electronics.

How does the saturation voltage vary with current and temperature?

V_CE(sat) is specified as ≤ -350mV at I_C = -1A and I_B = -100mA, T_A = +25°C. It increases with temperature and decreases slightly with higher base drive; typical curves show ~-450mV at +125°C and same current, confirming stable performance across automotive thermal ranges.

What is the complementary NPN part for FMMT589TA?

The officially designated complementary NPN type is FMMT489, sharing identical SOT23 package, AEC-Q101 qualification, and matched electrical characteristics including V_CEO = +30V, I_C = +1A, and V_CE(sat) < +350mV @ +1A - enabling balanced push-pull or H-bridge designs.

FMMT589TA 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):: 30 V

Vce Saturation (Max) @ Ib, Ic:: 650mV @ 200mA, 2A

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 500mA, 2V

Power - Max:: 500 mW

Frequency - Transition:: 100MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

FMMT589TA FAQ

1.How can I place an order for FMMT589TA through Aetrix?

Please submit a Request for Quotation (RFQ) for FMMT589TA 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 FMMT589TA reliable?

The price and inventory of FMMT589TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FMMT589TA is usually 5 days.

3.What payment methods are accepted for FMMT589TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FMMT589TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FMMT589TA?

FMMT589TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FMMT589TA 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 FMMT589TA?

For technical support, including FMMT589TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FMMT589TA requirements.

6.How does Aetrix verify that FMMT589TA is sourced from the original manufacturer or authorized distributors?

All FMMT589TA 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 FMMT589TA meets industry standards.

7.What is the process for return or replacement of FMMT589TA?

All FMMT589TA units undergo pre-shipment inspection (PSI). If there is an issue with FMMT589TA, 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 FMMT589TA part is unused and in its original packaging.

Return procedure for FMMT589TA:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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