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

Diodes Incorporated FMMT717TA

Name: FMMT717TA
Brand: Diodes Incorporated
SKU: FMMT717TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FMMT717TA

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

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

Datasheet:: FMMT717TA.pdf

Description:: TRANS PNP 12V 2.5A SOT-23-3

Quantity:: RFQ Add To RFQ list

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Inventory:9,538

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Product details

Overview

FMMT717TA from Diodes Incorporated is a 12V PNP silicon low-saturation transistor in SOT23 package, rated for -2.5A continuous collector current, -10A peak pulse current, and 625mW power dissipation. It delivers -17mV max V_CE(sat) at -100mA and achieves R_CE(sat) = 72mΩ at -2.5A, making it suitable for high-efficiency gate-driving of MOSFETs and IGBTs in compact DC-DC converters.

For engineers reviewing the FMMT717TA datasheet, FMMT717TA pinout, FMMT717TA application, or FMMT717TA equivalent, key selection criteria include verified PNP low-V_CE(sat) performance at high current, thermal resistance (R_θJA = 200°C/W), ESD robustness (4kV HBM), and complementary pairing with FMMT617 for push-pull switching stages.

Technical Context

This PNP bipolar junction transistor operates in linear and saturated switching modes with characterized h_FE down to -10A, supporting stable current gain under heavy load conditions. Its low saturation voltage and 72mΩ on-resistance enable minimal conduction loss in high-side load switch and battery charging control paths.

The device features a fully RoHS-compliant, halogen- and antimony-free "Green" molding compound, UL 94V-0 flammability rating, and J-STD-020 Level 1 moisture sensitivity - confirming suitability for reflow-soldered industrial and automotive-qualified designs (via FMMT717Q variant).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	-12V - Maximum safe collector-emitter reverse bias before breakdown in common-emitter configuration
I_C (cont.)	-2.5A - Continuous current-handling capability without thermal runaway on standard FR4 PCB
V_CE(sat)	-17mV max @ -100mA - Ultra-low voltage drop enabling <1mW conduction loss in signal-level switching
R_CE(sat)	72mΩ @ -2.5A - Equivalent on-resistance directly usable for power loss calculation in load-switch design
P_D	625mW - Power dissipation limit at T_A = +25°C with specified PCB copper area
h_FE	45–475 @ -10mA to -10A - Gain stability across full operating range supports predictable base drive sizing
f_T	80–110MHz - Transition frequency confirming usable bandwidth for fast-switching gate-drive applications

Pinout & Package

Package: SOT23 - Surface-mount plastic package with matte tin-plated leads, 0.008g mass, UL 94V-0 rated, and J-STD-020 Level 1 moisture sensitivity.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current source terminal in PNP configuration	Connected to positive rail in high-side switch; requires robust trace routing for -2.5A
2 (Base)	Control input for forward-biasing junction	Driven by logic-level or dedicated driver; -500mA max base current rating limits drive strength
3 (Collector)	Current sink terminal	Connected to load; low R_CE(sat) minimizes voltage drop during conduction

Key Features

Feature	Design Value
Low saturation voltage	V_CE(sat) ≤ -17mV @ -100mA enables sub-mW switching loss in battery management circuits
High peak pulse current	I_CM = -10A supports surge handling during motor startup or capacitor charging transients
Characterized h_FE up to -10A	Ensures reliable base drive design without gain collapse at full rated current
RoHS & "Green" compliance	No added lead, bromine <900ppm, chlorine <900ppm, antimony <1000ppm - meets global environmental mandates
ESD robustness	4kV HBM rating reduces risk of handling damage during manual assembly or board test

Applications

Gate-Drive Switching

Battery Charging Control

Use Scenario: Driving gates of N-channel MOSFETs in half-bridge inverters or synchronous rectifiers.

IC Role / Device Role / Timing Role: High-side PNP switch providing controlled turn-on/turn-off of power FETs with minimal delay.

Use Value: -17mV V_CE(sat) ensures gate voltage remains within specification even under high-current drive pulses.

Use Scenario: Enabling/disabling charging path between USB-PD source and Li-ion cell in portable electronics.

IC Role / Device Role / Timing Role: Load switch isolating battery from charger during fault or sleep mode.

Use Value: 72mΩ R_CE(sat) limits voltage drop to <180mV at 2.5A, preserving charging efficiency and thermal margin.

DC-DC Converter Active Clamp

Industrial Load Switching

Use Scenario: Clamping voltage spikes across transformer windings in flyback or forward converters.

IC Role / Device Role / Timing Role: Fast-turnoff PNP clamp transistor absorbing leakage energy during MOSFET off-time.

Use Value: 130ns t_off and 80–110MHz f_T support operation up to 500kHz switching frequencies.

Use Scenario: Controlling 24V solenoid or relay coils in PLC I/O modules.

IC Role / Device Role / Timing Role: High-current PNP switch interfacing microcontroller GPIO to inductive loads.

Use Value: -12V V_CEO and -10A I_CM withstand back-EMF and surge currents without snubber components.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP low-saturation transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZXTN25050DFH	Higher V_CEO (-50V), lower I_C (-1.5A), SOT23-3L package with same pinout	Better suited for higher-voltage industrial controls; less optimal for high-current battery switches	Select when system bus voltage exceeds 20V but peak current stays below 1.5A
FMMT720TA	Same SOT23 package, -20V V_CEO, -2A I_C, higher V_CE(sat) (-100mV @ -1A)	Offers improved voltage margin over FMMT717TA but sacrifices conduction efficiency at high current	Choose where voltage derating is critical and 100mV saturation drop is acceptable

Compared with ZXTN25050DFH and FMMT720TA, FMMT717TA uniquely balances -12V rating, -2.5A current, and ultra-low -17mV V_CE(sat) - making it optimal for space-constrained, high-efficiency 12V systems like USB-C PD adapters and compact motor drivers.

Availability

FMMT717TA is available at Aetrix Electronics and suitable for gate-driving MOSFETs and IGBTs, battery charging control, and DC-DC conversion requiring stable component supply and consistent parametric performance across production lots.

Supply support for FMMT717TA 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.

The FMMT717TA belongs to Diodes' FMMT series of low-saturation bipolar transistors, engineered specifically for high-efficiency switching in power management, load control, and interface applications where minimal conduction loss and thermal predictability are critical.

FAQ

What is the maximum allowable junction temperature for FMMT717TA?

The FMMT717TA has an operating junction temperature range of -55°C to +150°C. Its absolute maximum T_J is +150°C, and thermal derating begins at +25°C ambient per the published curve - with power dissipation reduced linearly to zero at +175°C ambient on standard FR4.

Is FMMT717TA pin-compatible with its NPN complement FMMT617?

Yes - both FMMT717TA (PNP) and FMMT617 (NPN) use identical SOT23 packages with matching pin assignments: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. This allows direct layout reuse in complementary emitter-follower or push-pull output stages.

Does FMMT717TA require a base resistor in typical switching applications?

Yes - a current-limiting base resistor is required to set I_B and ensure proper saturation. For example, driving at I_C = -2.5A with h_FE ≥ 100 requires ≥ -25mA I_B; with V_BE(sat) ≈ -0.9V and 3.3V logic drive, a 96Ω resistor yields ~25mA base current.

Can FMMT717TA be used in automotive applications?

The standard FMMT717TA is not AEC-Q101 qualified, but Diodes offers the automotive-compliant FMMT717Q variant - identical electrically and mechanically, with extended temperature testing (-40°C to +150°C) and PPAP documentation support for automotive-grade deployment.

FMMT717TA 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):: 2.5 A

Voltage - Collector Emitter Breakdown (Max):: 12 V

Vce Saturation (Max) @ Ib, Ic:: 220mV @ 50mA, 2.5A

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 300 @ 100mA, 2V

Power - Max:: 625 mW

Frequency - Transition:: 110MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

FMMT717TA FAQ

1.How can I place an order for FMMT717TA through Aetrix?

Please submit a Request for Quotation (RFQ) for FMMT717TA 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 FMMT717TA reliable?

The price and inventory of FMMT717TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FMMT717TA is usually 5 days.

3.What payment methods are accepted for FMMT717TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FMMT717TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FMMT717TA?

FMMT717TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FMMT717TA 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 FMMT717TA?

For technical support, including FMMT717TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FMMT717TA requirements.

6.How does Aetrix verify that FMMT717TA is sourced from the original manufacturer or authorized distributors?

All FMMT717TA 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 FMMT717TA meets industry standards.

7.What is the process for return or replacement of FMMT717TA?

All FMMT717TA units undergo pre-shipment inspection (PSI). If there is an issue with FMMT717TA, 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 FMMT717TA part is unused and in its original packaging.

Return procedure for FMMT717TA:

1.Submit a request within 90 days.

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

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