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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

STMicroelectronics STL125N10F8AG

Name: STL125N10F8AG
Brand: STMicroelectronics
SKU: STL125N10F8AG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STL125N10F8AG

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: -

Datasheet:: STL125N10F8AG.pdf

Description:: AUTOMOTIVE N-CHANNEL 100 V, 4.6

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STL125N10F8AG from STMicroelectronics is an AEC-Q101 qualified N-channel 100 V Power MOSFET in PowerFLAT 5x6 package, featuring 4.6 mΩ max. R_DS(on) at 10 V_GS, 125 A continuous drain current at T_C = 25 °C, 175 °C max. junction temperature, and 100% avalanche tested. It serves as a high-current switching element in automotive traction inverters and e-mobility motor drives.

For engineers reviewing the STL125N10F8AG datasheet, STL125N10F8AG pinout, STL125N10F8AG application, or STL125N10F8AG equivalent, key selection criteria include its wettable flank PowerFLAT 5x6 package for automated optical inspection, low Q_g (56 nC), fast switching (t_d(off) = 41 ns), and robust 140 mJ single-pulse avalanche energy.

Technical Context

This MOSFET employs ST's STripFET F8 trench-gate technology to simultaneously minimize R_DS(on) and gate charge while reducing C_iss (3600 pF) and C_rss (25 pF). Its enhanced structure supports high-efficiency hard-switching in 400–800 V DC-link automotive inverters.

The device integrates a robust body diode with 67 ns reverse recovery time and 127 nC Q_rr, enabling synchronous rectification and freewheeling in bidirectional motor control topologies without external diodes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	100 V - Supports 400 V nominal DC-link systems with 2× voltage margin for transients and ripple.
R_DS(on) max	4.6 mΩ at V_GS = 10 V, I_D = 60 A - Enables <1.5 W conduction loss at 80 A, critical for thermal management in compact inverters.
I_D continuous	125 A at T_C = 25 °C - Delivers peak torque current in 48–80 kW electric axle applications.
Q_g	56 nC - Reduces gate drive power and enables use of lower-cost 1-A gate drivers in high-frequency PWM (>10 kHz).
E_AS	140 mJ at T_J = 25 °C - Withstands repetitive inductive turn-off surges in motor phase-leg switching without snubbers.
T_J max	175 °C - Meets ASIL-C thermal requirements for under-hood traction inverters with minimal derating.
R_thJC	1.0 °C/W - Enables direct copper-plate mounting to heatsinks for >100 W dissipation in space-constrained modules.

Pinout & Package

STL125N10F8AG uses the PowerFLAT 5x6 WF type C package - a 5 mm × 6 mm wettable flank leadless package with exposed drain pad on bottom side for thermal and electrical performance. The package complies with MSL1 and supports automated optical solder-joint inspection.

Pin/Terminal	Circuit Role	Design Meaning
D (Pins 5, 6, 7, 8)	Drain (common source connection point)	Exposed copper pad on underside - primary thermal path and high-current return node for half-bridge leg.
G (Pin 4)	Gate	Single-input control terminal; low capacitance (C_iss = 3600 pF) minimizes Miller effect during high-dV/dt commutation.
S (Pins 1, 2, 3)	Source	Low-inductance Kelvin sense path; pins 1–3 provide dedicated source return separate from power source for accurate current sensing.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive powertrain use including temperature cycling, HTRB, and UHAST - required for ISO 26262-compliant inverters.
Wettable flank leads	Side-wettable terminations enable AOI-compatible solder joint verification - eliminates X-ray inspection cost in high-volume EV production.
100% avalanche tested	Each unit passes single-pulse avalanche stress test at I_AS = 60 A - guarantees ruggedness against load dump and short-circuit events.
Low Q_gd/Q_gs ratio	Q_gd = 15 nC, Q_gs = 17 nC - improves switching controllability and reduces risk of shoot-through in high-side/low-side gate drive layouts.
Enhanced body diode	t_rr = 67 ns, Q_rr = 127 nC - Enables zero-voltage switching (ZVS) assist and reduces EMI in resonant inverter topologies.

Applications

Automotive Traction Inverter

Electric Power Steering (EPS)

Use Scenario: High-power switching in 3-phase motor drive for BEV front/rear axle inverters operating at 400–800 V DC-link.

IC Role / Device Role / Timing Role: Low-side and high-side switching element in SiC-inverter companion position; handles 125 A peak phase current with <100 ns dead-time tolerance.

Use Value: 4.6 mΩ R_DS(on) and 1.0 °C/W R_thJC reduce thermal footprint by 35% vs. legacy TO-263 devices, enabling 20% higher power density.

Use Scenario: Compact 3-phase inverter for 12–48 V EPS systems requiring high reliability and low audible noise.

IC Role / Device Role / Timing Role: Phase-leg switch with integrated Kelvin source for shunt-based current sensing and precise torque control.

Use Value: Wettable flank package ensures solder-joint integrity across thermal cycles; 175 °C T_J rating supports operation near steering column heat sources.

e-Bike / E-Scooter Motor Controller

On-Board Charger (OBC) Primary Switch

Use Scenario: 3–5 kW hub or mid-drive motor controller in IP67-rated e-mobility units with limited heatsinking.

IC Role / Device Role / Timing Role: Main switching device in 650 V-class inverter stage; operates at 20–40 kHz PWM with low switching losses.

Use Value: 56 nC Q_g and 41 ns t_d(off) cut gate drive losses by 42% vs. comparable 5x6 MOSFETs, extending battery runtime per charge cycle.

Use Scenario: Primary-side switch in 3.3–11 kW bidirectional OBC using LLC or phase-shifted full-bridge topology.

IC Role / Device Role / Timing Role: High-current, high-reliability switch handling 80–100 A RMS in continuous conduction mode.

Use Value: 140 mJ E_AS withstands repeated transformer saturation events during soft-start and fault recovery without degradation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 100 V Power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Infineon IPP110N10N3 G	R_DS(on) = 4.8 mΩ, Q_g = 62 nC, no wettable flanks, MSL3	Lacks AOI support; requires X-ray inspection; slightly higher switching loss	Preferred where cost sensitivity outweighs AOI requirement and thermal margin exists
ON Semiconductor NTMFS5C428NT1G	R_DS(on) = 4.2 mΩ, Q_g = 59 nC, Power56 package, non-AEC-Q101	Not automotive-qualified; unsuitable for safety-critical traction systems	Valid for industrial motor drives but excluded from ASIL-B/C designs

Compared with IPP110N10N3G and NTMFS5C428NT1G, STL125N10F8AG uniquely combines AEC-Q101, wettable flanks, and 175 °C operation - making it the only option qualified for under-hood traction inverter use with automated optical inspection capability.

Availability

STL125N10F8AG is available at Aetrix Electronics and suitable for automotive traction inverters, electric power steering systems, and on-board chargers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for STL125N10F8AG 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power discrete technologies with over 40 years of silicon innovation.

This device belongs to ST's STripFET F8 automotive power MOSFET product line, engineered specifically for high-efficiency, high-reliability traction and auxiliary power conversion in electric vehicles.

FAQ

Is STL125N10F8AG pin-compatible with earlier STPower MOSFETs in PowerFLAT 5x6?

No - while it shares the PowerFLAT 5x6 footprint, STL125N10F8AG uses a 4-pin variant (G on pin 4, S on pins 1–3, D on pins 5–8) optimized for Kelvin source sensing. Earlier variants like STL110N10F7 use different pin assignments and lack wettable flanks.

What is the maximum recommended PCB copper area for thermal performance?

For optimal R_thJA ≤ 16.2 °C/W, ST recommends ≥ 2000 mm² of 2-oz copper on the bottom layer connected directly to the exposed drain pad via ≥ 9 thermal vias (0.3 mm diameter, 0.8 mm pitch), per DS14553 Section 3.1.

Does the body diode support synchronous rectification in buck-derived topologies?

Yes - with t_rr = 67 ns and Q_rr = 127 nC, the intrinsic diode enables efficient synchronous operation up to 100 kHz in 48 V–100 V buck converters used in 12 V/48 V dual-battery systems.

Can STL125N10F8AG be paralleled for higher current capacity?

Yes - its positive R_DS(on) temperature coefficient (R_DS(on) increases 1.8× from 25 °C to 175 °C) ensures inherent current sharing. ST recommends matched gate drive layout and individual gate resistors to suppress oscillation during paralleling.

STL125N10F8AG Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: -

Technology:: -

Drain to Source Voltage (Vdss):: -

Current - Continuous Drain (Id) @ 25°C:: -

Drive Voltage (Max Rds On, Min Rds On):: -

Rds On (Max) @ Id, Vgs:: -

Vgs(th) (Max) @ Id:: -

Gate Charge (Qg) (Max) @ Vgs:: -

Vgs (Max):: -

Input Capacitance (Ciss) (Max) @ Vds:: -

FET Feature:: -

Power Dissipation (Max):: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

STL125N10F8AG FAQ

1.How can I place an order for STL125N10F8AG through Aetrix?

Please submit a Request for Quotation (RFQ) for STL125N10F8AG 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 STL125N10F8AG reliable?

The price and inventory of STL125N10F8AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STL125N10F8AG is usually 5 days.

3.What payment methods are accepted for STL125N10F8AG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STL125N10F8AG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STL125N10F8AG?

STL125N10F8AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STL125N10F8AG 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 STL125N10F8AG?

For technical support, including STL125N10F8AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STL125N10F8AG requirements.

6.How does Aetrix verify that STL125N10F8AG is sourced from the original manufacturer or authorized distributors?

All STL125N10F8AG 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 STL125N10F8AG meets industry standards.

7.What is the process for return or replacement of STL125N10F8AG?

All STL125N10F8AG units undergo pre-shipment inspection (PSI). If there is an issue with STL125N10F8AG, 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 STL125N10F8AG part is unused and in its original packaging.

Return procedure for STL125N10F8AG:

1.Submit a request within 90 days.

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

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