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

Nexperia USA Inc. NSF040120L4A0Q

Name: NSF040120L4A0Q
Brand: Nexperia USA Inc.
SKU: NSF040120L4A0Q
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NSF040120L4A0Q

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: TO-247-4

Datasheet:: NSF040120L4A0Q.pdf

Description:: NSF040120L4A0/SOT8071/TO247-4L

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Product details

Overview

NSF040120L4A0 from Nexperia is a 1200 V, 40 mΩ N-channel silicon carbide (SiC) MOSFET in a TO-247-4L package with Kelvin source terminal, designed for high-voltage, high-efficiency power conversion stages. It delivers 46 A continuous drain current at Tc = 100 °C, exhibits 40–60 mΩ R_DS(on) at 15 V_GS and 25 °C, and features fast switching (t_d(off) = 22 ns, t_f = 8 ns) and robust intrinsic body diode recovery (t_rr = 8 ns). It is deployed in photovoltaic inverters and EV DC fast-charging modules where high blocking voltage and low conduction/switching losses are critical.

For engineers reviewing the NSF040120L4A0 datasheet, NSF040120L4A0 pinout, NSF040120L4A0 application, or NSF040120L4A0 equivalent, key selection criteria include its Kelvin-source-enabled gate drive stability, temperature-invariant turn-off loss behavior, 175 °C maximum junction rating, and compatibility with 800 V bus topologies in three-phase totem-pole PFC and two-level inverters.

Technical Context

This SiC MOSFET employs a planar trench-gate structure optimized for low Q_G/Q_GD ratio (95 nC total gate charge, 30 nC gate-drain charge), enabling clean voltage/current commutation under hard-switching conditions. Its 0.41–0.49 K/W junction-to-case thermal resistance supports high-power density mounting on heatsinks via the isolated mounting base (drain-connected).

The device integrates a fast, low-V_SD (4.4 V @ 40 A, -5 V_GS) intrinsic body diode with minimal recovered charge (Q_r = 103 nC) and reverse recovery time (t_rr = 8 ns), eliminating need for external anti-parallel SiC Schottky diodes in bidirectional switch applications like active rectification and motor phase-legs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	1200 V - Enables direct use in 1000 V DC bus systems with 20 % safety margin for overvoltage transients.
R_DS(on)	40–60 mΩ @ V_GS = 15 V, I_D = 40 A, T_j = 25 °C - Low conduction loss enables >99 % efficiency in 30–100 kW inverters.
I_D (cont)	46 A @ T_c = 100 °C - Sustains high output current without derating when mounted on forced-air or liquid-cooled heatsinks.
E_off	100 µJ @ V_DD = 800 V, I_D = 40 A, R_G(ext) = 2.2 Ω, T_j = 25 °C - Enables 100+ kHz switching in high-frequency LLC and phase-shifted full-bridge converters.
t_rr	8 ns - Minimizes diode-induced shoot-through risk and reduces EMI during zero-voltage switching transitions.
R_th(j-c)	0.41–0.49 K/W - Allows thermal design with <1.5 °C/W heatsink + interface resistance for 306 W dissipation at T_c = 25 °C.
V_GS(th)	2.77 V (typ) @ I_D = 20 mA - Ensures reliable turn-on with standard 15 V gate drivers while avoiding spurious conduction near 0 V.

Pinout & Package

NSF040120L4A0 uses the TO-247-4L (SOT8071-1) plastic through-hole package with isolated mounting base connected to drain. The 4-pin layout separates power source (Pin 2) from Kelvin source (Pin 3) to eliminate source inductance effects on gate control loop stability.

Pin/Terminal	Circuit Role	Design Meaning
1 - D	Drain	Main high-side power terminal; electrically tied to mounting base for low-inductance heatsink connection.
2 - S	Power Source	Carries full load current; referenced to gate driver ground but subject to source inductance voltage drop.
3 - KS	Kelvin Source	Provides gate driver feedback reference point, eliminating source inductance impact on V_GS accuracy and switching timing.
4 - G	Gate	Control input; requires low-impedance path to driver IC; benefits from local 100 nF bypass capacitor between G and KS.

Key Features

Feature	Design Value
Kelvin source terminal	Enables precise gate voltage regulation under high di/dt, preventing false turn-off during fast load transients.
Temperature-stable R_DS(on)	Increases only ~32 % from 40 mΩ @ 25 °C to 53 mΩ @ 175 °C - maintains predictable conduction loss across full operating range.
Fully rated body diode	Supports 40 A forward current with 4.4 V drop and 8 ns t_rr - allows unidirectional or bidirectional operation without external diode in totem-pole PFC.
Low Q_GD/Q_G ratio	30/95 = 0.32 - improves Miller immunity and enables stable operation with higher gate resistance for EMI reduction.
175 °C max junction temperature	Permits operation in high-ambient environments (e.g., enclosed EV chargers) without forced cooling derating penalties.

Applications

Photovoltaic Inverters

E-vehicle DC Fast Charging

Use Scenario: Three-phase 1500 V string inverters converting DC from solar arrays into grid-synchronized AC.

IC Role / Device Role / Timing Role: High-side switch in NPC or T-type three-level inverter leg, operating at 16–25 kHz with soft-switching assist.

Use Value: 1200 V rating accommodates 1500 V DC bus; low E_off and t_rr reduce thermal stress on heat sinks and improve partial-load efficiency by >1.2 %.

Use Scenario: 350 kW liquid-cooled charging stations with dual active bridge (DAB) isolation and output rectification stages.

IC Role / Device Role / Timing Role: Primary-side switch in DAB half-bridge, switching at 100–200 kHz with ZVS capability.

Use Value: Kelvin source ensures consistent V_GS control despite 1000 A/µs di/dt; 0.41 K/W R_th(j-c) enables compact thermal design at 98.5 % peak efficiency.

Motor Drives (Industrial)

Uninterruptible Power Supply (UPS)

Use Scenario: 75–200 kW variable-frequency drives for HVAC compressors and industrial pumps using field-oriented control.

IC Role / Device Role / Timing Role: Phase-leg switch in two-level inverter topology, handling 400–690 V AC line-fed DC link with regenerative braking.

Use Value: Robust body diode handles reverse recovery during regeneration without snubbers; 160 A pulsed current rating supports 200 % overload for 10 s.

Use Scenario: Online double-conversion UPS systems delivering clean 400 V AC output from 750 V DC battery banks in data centers.

IC Role / Device Role / Timing Role: Inverter-stage switch in full-bridge configuration, operating at 12–16 kHz with harmonic filtering.

Use Value: Stable R_DS(on) vs. temperature prevents thermal runaway during sustained overload; 1200 V rating covers battery end-of-life voltage sag plus surge margin.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage SiC MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Wolfspeed C3M0040120K	Same 1200 V/40 mΩ rating, but TO-247-4L package with different pinout (G-KS-D-S); R_th(j-c) = 0.45 K/W (typ).	Requires PCB layout revision due to swapped drain/source pin positions; identical thermal and switching performance.	Select when existing design uses Wolfspeed footprint or when sourcing diversity is required without electrical redesign.
ROHM SCT3040KL	1200 V/42 mΩ, TO-247N-4L; slightly higher R_DS(on) and E_off (115 µJ); V_GS(th) = 2.7–5.0 V (wider spread).	Lower gate threshold tolerance increases risk of incomplete turn-on with marginal gate drivers; needs tighter V_GS control.	Prefer for cost-sensitive industrial drives where 0.5 % efficiency penalty is acceptable and gate driver headroom is ample.

Compared with C3M0040120K and SCT3040KL, NSF040120L4A0 offers tighter V_GS(th) distribution (2.77 V typ, ±0.2 V), lower E_off, and validated Kelvin-source layout compatibility with Nexperia's gate driver reference designs - making it optimal for high-reliability, high-density EV charger and solar inverter platforms.

Availability

NSF040120L4A0 is available at Aetrix Electronics and suitable for photovoltaic inverters, EV DC fast-charging infrastructure, and industrial motor drives requiring stable component supply across multi-year production cycles.

Supply support for NSF040120L4A0 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

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance discrete, logic, and MOSFET solutions for automotive, industrial, and computing markets.

This device belongs to Nexperia's high-voltage SiC MOSFET product line, engineered specifically for next-generation energy conversion systems demanding >99 % efficiency, compact size, and operation up to 175 °C junction temperature.

FAQ

What gate drive voltage is recommended for reliable operation?

Nexperia specifies -5 V to 0 V for turn-off and +15 V for turn-on, with minimum recommended V_GS(on) of 13 V. Using <13 V risks incomplete enhancement and elevated R_DS(on); exceeding 22 V absolute maximum risks oxide degradation. A dedicated isolated gate driver with Kelvin-source feedback is mandatory to maintain V_GS accuracy under high di/dt.

How does the Kelvin source pin improve system reliability?

The Kelvin source (Pin 3) provides a dedicated low-current return path for the gate driver, decoupling gate control from power source inductance. This eliminates voltage spikes induced by high di/dt on the main source pin (Pin 2), preventing false turn-off events and ensuring consistent switching timing - critical in paralleled configurations and high-frequency resonant converters.

Can this MOSFET replace silicon IGBTs in existing 1200 V inverter designs?

Yes - with gate driver and layout modifications. Its 1200 V rating matches standard IGBT modules, but its faster switching requires reduced gate loop inductance, optimized snubber networks, and attention to parasitic oscillation. The Kelvin source necessitates 4-layer PCB routing; thermal interface must accommodate lower R_th(j-c) than typical IGBTs.

What is the maximum allowable case temperature for continuous operation?

The datasheet defines 100 °C as the maximum case temperature for 46 A continuous drain current. Derating begins above 25 °C per Figure 18; at T_c = 100 °C, P_tot is limited to ~125 W (based on R_th(j-c) = 0.49 K/W and T_j(max) = 175 °C). Forced-air or liquid cooling is required to sustain full-rated current above 60 °C case temperature.

NSF040120L4A0Q Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-247-4

Packaging:: Tube

Product Status:: Active

FET Type:: N-Channel

Technology:: SiCFET (Silicon Carbide)

Drain to Source Voltage (Vdss):: 1200 V

Current - Continuous Drain (Id) @ 25°C:: 65A (Tj)

Drive Voltage (Max Rds On, Min Rds On):: 15V, 18V

Rds On (Max) @ Id, Vgs:: 60mOhm @ 40A, 15V

Vgs(th) (Max) @ Id:: 2.9V @ 4mA

Gate Charge (Qg) (Max) @ Vgs:: 95 nC @ 15 V

Vgs (Max):: +22V, -10V

Input Capacitance (Ciss) (Max) @ Vds:: 2600 pF @ 800 V

FET Feature:: -

Power Dissipation (Max):: 306W (Tj)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-247

NSF040120L4A0Q FAQ

1.How can I place an order for NSF040120L4A0Q through Aetrix?

Please submit a Request for Quotation (RFQ) for NSF040120L4A0Q 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 NSF040120L4A0Q reliable?

The price and inventory of NSF040120L4A0Q are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NSF040120L4A0Q is usually 5 days.

3.What payment methods are accepted for NSF040120L4A0Q?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NSF040120L4A0Q transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NSF040120L4A0Q?

NSF040120L4A0Q orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NSF040120L4A0Q 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 NSF040120L4A0Q?

For technical support, including NSF040120L4A0Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NSF040120L4A0Q requirements.

6.How does Aetrix verify that NSF040120L4A0Q is sourced from the original manufacturer or authorized distributors?

All NSF040120L4A0Q 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 NSF040120L4A0Q meets industry standards.

7.What is the process for return or replacement of NSF040120L4A0Q?

All NSF040120L4A0Q units undergo pre-shipment inspection (PSI). If there is an issue with NSF040120L4A0Q, 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 NSF040120L4A0Q part is unused and in its original packaging.

Return procedure for NSF040120L4A0Q:

1.Submit a request within 90 days.

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

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