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

Diodes Incorporated FMMTL717TA

Name: FMMTL717TA
Brand: Diodes Incorporated
SKU: FMMTL717TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FMMTL717TA

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

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

Datasheet:: FMMTL717TA.pdf

Description:: TRANS PNP 12V 1.25A SOT-23-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

FMMTL717TA from Diodes Incorporated is a PNP medium-power bipolar junction transistor in SOT23 package, rated for -12V V_CEO, -1.25A continuous collector current, and 500mW power dissipation. It delivers low saturation voltage (V_CE(sat) < -240mV @ -1A), high DC current gain (h_FE = 180–275 @ -1A), and AEC-Q101 qualification-used in automotive load switching and industrial power control circuits.

For engineers reviewing the FMMTL717TA datasheet, FMMTL717TA pinout, FMMTL717TA application, or FMMTL717TA equivalent, key selection criteria include verified PNP polarity, SOT23 thermal derating behavior, -1.25A steady-state current capability, -240mV V_CE(sat) at -1A/IB=-50mA, and AEC-Q101 qualification status for automotive-grade reliability.

Technical Context

This PNP BJT operates in linear or saturated switching mode with emitter-grounded configuration. Its high h_FE (≥180 @ -1A) enables low base drive requirements, while R_CE(SAT) = 160mΩ supports efficient power switching at moderate currents.

The device features robust ESD protection (4kV HBM), operates across -55°C to +150°C, and exhibits f_T = 205MHz-suitable for medium-speed digital switching and analog amplification up to ~100MHz where gain-bandwidth trade-offs are acceptable.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	-12 V - Maximum allowable collector-emitter voltage before breakdown; defines safe operating range in PNP switch applications.
I_C (continuous)	-1.25 A - Steady-state collector current capacity; determines maximum load current in DC-coupled switching circuits.
V_CE(sat) @ -1A	< -240 mV - Low saturation voltage reduces conduction loss and self-heating during on-state operation.
h_FE @ -1A	180–275 - High DC current gain ensures minimal base drive current (e.g., ~5mA IB for 1.25A IC), easing MCU GPIO interface.
P_D	500 mW - Power dissipation limit at 25°C ambient; requires thermal derating above 25°C per R_θJA = 250°C/W.
f_T	205 MHz - Transition frequency confirms usable bandwidth for pulse-width modulation (PWM) switching up to ~20MHz with gain margin.

Pinout & Package

SOT23-3 plastic surface-mount package with matte tin-plated leads, UL 94V-0 flammability rating, and moisture sensitivity level 1. Weight: 0.008 g.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Emitter terminal	Common reference node in PNP configuration; connected to positive rail in high-side switch topologies.
2 (Base)	Control input	Receives negative base current to turn on; logic-level compatible when driven by open-collector or inverted GPIO.
3 (Collector)	Output current path	Connects to load; sinks current toward emitter when active; thermally coupled to PCB copper for heat dissipation.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive temperature cycling, humidity, and mechanical stress-enables use in engine control and body electronics without additional qualification.
R_CE(SAT) = 160mΩ	Equivalent on-resistance enables <150mW conduction loss at -1A, reducing thermal design burden in space-constrained SOT23 layouts.
h_FE characterized to -3A	Guaranteed gain down to high-current region supports stable operation under transient overloads without gain collapse.
Lead-free & halogen-free	Complies with RoHS 2 and JEDEC J-STD-020 Level 1 moisture sensitivity-eliminates reflow concerns and supports green manufacturing requirements.

Applications

Automotive LED Headlamp Control

Industrial 24V Relay Driver

Use Scenario: Switching high-brightness LED arrays in vehicle headlamps with PWM dimming and thermal foldback.

IC Role / Device Role / Timing Role: PNP high-side switch controlling current flow from battery to LED string; handles -1.25A continuous load with fast turn-on/off (t_on = 76ns, t_off = 149ns).

Use Value: Low V_CE(sat) minimizes power loss and junction temperature rise, extending LED lifetime and enabling compact heatsinkless designs.

Use Scenario: Driving 24V electromagnetic relays in PLC I/O modules requiring robust transient immunity and long-term reliability.

IC Role / Device Role / Timing Role: Medium-power interface transistor translating microcontroller logic signals into relay coil current; withstands inductive kickback via -12V V_CEO rating.

Use Value: AEC-Q101 qualification ensures operational stability across industrial temperature extremes (-40°C to +125°C ambient).

Consumer Appliance Motor Start Circuit

Medical Infusion Pump Current Regulator

Use Scenario: Enabling brushed DC motor startup surge current in home appliances using brief high-current pulses.

IC Role / Device Role / Timing Role: PNP switch delivering -4A peak pulse current (I_CM) for motor inrush, with controlled saturation to limit voltage overshoot.

Use Value: Verified I_CM = -4A and f_T = 205MHz support reliable turn-off during commutation transients.

Use Scenario: Precision current regulation for stepper motor drivers in portable infusion pumps requiring low-noise, stable bias.

IC Role / Device Role / Timing Role: Linear-mode current source element with h_FE stability up to -1A and tight V_BE(sat) tolerance (-970 to -1100mV).

Use Value: Tight V_BE(sat) distribution enables predictable base biasing for ±2% current accuracy without trimming.

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
DMT3003LPSQ-7	Higher V_CEO (-30V), lower h_FE (100–200 @ -1A), same SOT23-3 package	Better suited for higher-voltage industrial supplies; reduced gain requires stronger base drive	Select when system voltage exceeds 12V but thermal budget allows higher V_CE(sat).
BC807-25,215	Lower I_C (-500mA), lower V_CEO (-45V), non-AEC-Q101, TO-236AB package	Not qualified for automotive use; limited to consumer-grade low-current switching	Choose only for cost-sensitive, non-automotive applications below 500mA load.

Compared with DMT3003LPSQ-7 and BC807-25,215, FMMTL717TA uniquely balances -12V rating, -1.25A current, AEC-Q101 compliance, and low V_CE(sat)-making it optimal for automotive and industrial 12V/24V medium-power switching where reliability and efficiency intersect.

Availability

FMMTL717TA is available at Aetrix Electronics and suitable for automotive LED control, industrial relay driving, and medical infusion pump current regulation requiring stable component supply and AEC-Q101 traceability.

Supply support for FMMTL717TA 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.

FMMTL717TA belongs to Diodes' AEC-Q101-qualified PNP transistor product line, engineered for robust medium-power switching in harsh-environment applications including engine control units and body electronics.

FAQ

What is the maximum continuous collector current for FMMTL717TA?

The maximum continuous collector current (I_C) is -1.25A at T_A = +25°C. Derating applies above 25°C per R_θJA = 250°C/W; at 100°C ambient, max I_C drops to approximately -0.75A to maintain junction temperature ≤150°C.

Is FMMTL717TA suitable for high-frequency switching applications?

Yes-its f_T = 205MHz and fast switching times (t_on = 76ns, t_off = 149ns) support PWM operation up to ~20MHz. However, full utilization requires careful layout to minimize parasitic inductance and ensure stable base drive impedance.

Does FMMTL717TA require external protection against inductive kickback?

No external clamp diode is required for typical relay loads due to its -12V V_CEO rating and ability to absorb flyback energy within safe SOA limits. For highly inductive loads exceeding 100mJ, a parallel TVS or Zener is recommended.

How does the AEC-Q101 qualification impact FMMTL717TA's use in non-automotive designs?

AEC-Q101 qualification ensures extended temperature operation (-55°C to +150°C), enhanced ESD robustness (4kV HBM), and accelerated life testing-providing superior reliability margins even in demanding industrial or medical applications outside automotive scope.

FMMTL717TA 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):: 1.25 A

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

Vce Saturation (Max) @ Ib, Ic:: 290mV @ 50mA, 1.25A

Current - Collector Cutoff (Max):: 10nA

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

Power - Max:: 500 mW

Frequency - Transition:: 205MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

FMMTL717TA FAQ

1.How can I place an order for FMMTL717TA through Aetrix?

Please submit a Request for Quotation (RFQ) for FMMTL717TA 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 FMMTL717TA reliable?

The price and inventory of FMMTL717TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FMMTL717TA is usually 5 days.

3.What payment methods are accepted for FMMTL717TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FMMTL717TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FMMTL717TA?

FMMTL717TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FMMTL717TA 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 FMMTL717TA?

For technical support, including FMMTL717TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FMMTL717TA requirements.

6.How does Aetrix verify that FMMTL717TA is sourced from the original manufacturer or authorized distributors?

All FMMTL717TA 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 FMMTL717TA meets industry standards.

7.What is the process for return or replacement of FMMTL717TA?

All FMMTL717TA units undergo pre-shipment inspection (PSI). If there is an issue with FMMTL717TA, 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 FMMTL717TA part is unused and in its original packaging.

Return procedure for FMMTL717TA:

1.Submit a request within 90 days.

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

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