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

Nexperia USA Inc. PSMN1R4-40YSHX

Name: PSMN1R4-40YSHX
Brand: Nexperia USA Inc.
SKU: PSMN1R4-40YSHX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PSMN1R4-40YSHX

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: SOT-1023, 4-LFPAK

Datasheet:: PSMN1R4-40YSHX.pdf

Description:: NEXTPOWERS3 MOSFETS

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PSMN1R4-40YSH from Nexperia is an N-channel 40 V, 1.4 mΩ R_DS(on), 240 A standard-level power MOSFET in LFPAK56E (SOT1023) package, built with NextPower-S3 Schottky-Plus technology. It delivers high-current switching for server power supplies, synchronous rectification, and eFuse applications, featuring avalanche-rated ruggedness (190 A I_AS), 175 °C junction rating, and low Q_RR/Q_G for high-efficiency, low-EMI designs.

For engineers reviewing the PSMN1R4-40YSH datasheet, PSMN1R4-40YSH pinout, PSMN1R4-40YSH application, or PSMN1R4-40YSH equivalent, this device is selected for high-power DC-DC conversion where low conduction loss, robust linear-mode SOA, and fast soft-recovery body diode performance are critical - especially in thermally constrained 48 V input server and hot-swap systems.

Technical Context

This MOSFET employs TrenchMOS Superjunction architecture with copper-clip die attach and solder die bonding in a 175 °C-qualified LFPAK56E package. Its Schottky-Plus body diode achieves V_SD = 0.77 V at 25 A and t_rr = 36 ns, enabling efficient synchronous rectification without external diode replacement.

The device operates with standard 10 V gate drive, exhibits V_GS(th) = 3.1 V (typ), and maintains R_DS(on) ≤ 3.05 mΩ up to T_j = 175 °C. Its thermal resistance R_th(j-mb) = 0.33 K/W enables high-power dissipation when mounted on a 25.4 mm² copper pad.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	40 V maximum - supports 48 V nominal bus systems with 20 % derating margin
R_DS(on)	1.06–1.4 mΩ at V_GS = 10 V, I_D = 25 A, T_j = 25 °C - enables <1.2 W conduction loss at 200 A
I_D(cont)	240 A at T_mb = 25 °C - validated continuous current under application test conditions
Q_G(tot)	44–96 nC - low gate charge reduces driver power and switching losses in high-frequency converters
Q_GD	2.8–19 nC - minimized Miller charge improves dV/dt immunity and hard-switching robustness
t_rr	36 ns - fast, soft reverse recovery minimizes voltage overshoot and EMI in synchronous rectifiers
R_th(j-mb)	0.33–0.45 K/W - enables >300 W power handling with direct mounting base cooling

Pinout & Package

LFPAK56E (SOT1023) is a 4-lead, single-ended surface-mount plastic package with exposed mounting base connected to drain. It features copper-clip construction, solder die attach, wave-solderable leads, and visual solder-joint inspection capability.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3	Source (S)	Three parallel source terminals reduce parasitic inductance and improve current sharing in high-di/dt switching
4	Gate (G)	Single gate input with low RG (0.4–2.5 Ω) - compatible with standard gate drivers without added series resistance
Mounting Base (mb)	Drain (D)	Exposed copper base electrically connected to drain - serves as primary thermal path and high-current return

Key Features

Feature	Design Value
Avalanche rated, 100% tested at I_AS = 190 A	Enables reliable operation under unclamped inductive switching without external snubbers
Schottky-Plus body diode (V_SD = 0.77 V, Q_RR = 34 nC)	Reduces reverse recovery loss by >60 % vs. standard MOSFETs - critical for ZVS/ZCS topologies
Strong SOA (linear-mode) rating	Supports safe operation in active current limiting, inrush control, and eFuse functions up to 100 ms
Low Q_G, Q_GD, and C_iss/C_oss	Enables >1 MHz switching in high-density DC-DC converters while maintaining <10 % efficiency penalty
175 °C qualified LFPAK56E package	Permits operation in high-ambient environments (e.g., server chassis near CPUs) without derating

Applications

High-Performance Server PSU

Synchronous Rectification

Use Scenario: Primary-side switch and secondary-side synchronous rectifier in 48 V–12 V/54 V–12 V isolated DC-DC modules for AI accelerators.

IC Role / Device Role / Timing Role: High-current, low-R_DS(on) power switch operating at 300–500 kHz with tight duty-cycle control.

Use Value: Achieves >97 % peak efficiency at 200 A output due to sub-1.4 mΩ R_DS(on) and soft-recovery diode eliminating dead-time loss.

Use Scenario: Secondary-side rectification in LLC resonant converters for telecom rectifiers and OCPDs.

IC Role / Device Role / Timing Role: Synchronous rectifier replacing Schottky diodes, driven by transformer-coupled gate signals.

Use Value: Reduces forward conduction loss by 40 % and eliminates reverse recovery loss, lowering case temperature by 15 °C at full load.

Hot-Swap & eFuse

Brushless DC Motor Control

Use Scenario: In-line load switch in 48 V data center rack PDUs with programmable current limiting and fault shutdown.

IC Role / Device Role / Timing Role: High-current, low-impedance pass element with precise linear-mode current regulation and fast overcurrent response.

Use Value: Supports 200 A continuous and 1322 A pulsed current with SOA-limited turn-on, enabling <100 µs fault clearing without thermal runaway.

Use Scenario: High-side and low-side switches in 48 V BLDC inverters for industrial pumps and fans.

IC Role / Device Role / Timing Role: Power stage switch with integrated body diode for freewheeling and regenerative braking.

Use Value: Soft-recovery diode reduces voltage spikes during commutation, eliminating need for external RC snubbers and improving EMC compliance.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current, low-R_DS(on) N-channel MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Infineon IPP026N04L	R_DS(on) = 0.26 mΩ @ 10 V, but only rated for 40 V and 180 A; no avalanche rating; TO-220FP package	Lacks 190 A I_AS test and 175 °C qualification - unsuitable for mission-critical hot-swap or server PSU primary side	Prefer PSMN1R4-40YSH where avalanche ruggedness, SOA, and surface-mount reliability are required.
Vishay SiR626DP	R_DS(on) = 1.3 mΩ @ 10 V, 200 A rating, PowerPAK SO-8 package; no Schottky-Plus diode - t_rr = 65 ns, Q_RR = 62 nC	Higher reverse recovery loss limits usable frequency in synchronous rectification below 300 kHz	Choose PSMN1R4-40YSH when soft recovery, low EMI, and >400 kHz operation are design priorities.

Compared with IPP026N04L and SiR626DP, PSMN1R4-40YSH uniquely combines 240 A current capability, 190 A avalanche rating, 36 ns t_rr, and 175 °C LFPAK56E packaging - making it the only option qualified for high-reliability, high-frequency, high-thermal-load server and hot-swap applications.

Availability

PSMN1R4-40YSH is available at Aetrix Electronics and suitable for high-performance server power supplies, synchronous rectification circuits, and eFuse-based load-switch applications requiring stable component supply across multi-year production cycles.

Supply support for PSMN1R4-40YSH 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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade power MOSFETs.

This device belongs to Nexperia's NextPower-S3 Schottky-Plus portfolio, engineered specifically for high-efficiency, high-current power conversion in data center, telecom, and industrial motor control systems where thermal density and switching integrity are critical.

FAQ

What is the maximum continuous drain current for PSMN1R4-40YSH at 100 °C mounting base temperature?

At T_mb = 100 °C, the continuous drain current is 234 A per the datasheet Figure 2. This reflects thermal derating due to reduced heat transfer efficiency at elevated mounting temperatures, and assumes adequate PCB copper area and airflow per the recommended layout in Figure 5.

Does PSMN1R4-40YSH require a negative gate voltage for reliable turn-off in high-dV/dt environments?

No - the device has a V_GS rating of ±20 V and is designed for standard 0 V/10 V gate drive. Its low Q_GD (2.8–19 nC) and high Miller ratio immunity make it stable under typical 48 V bus dV/dt transients without negative turn-off bias.

Can PSMN1R4-40YSH be used in linear-mode (SOA) applications such as electronic fuses?

Yes - it is explicitly characterized for linear-mode operation with a defined Safe Operating Area curve (Figure 3). At 25 °C, it supports 240 A for DC, 1322 A for 10 µs pulses, and sustained current limiting up to 100 ms within its SOA envelope.

What is the thermal resistance from junction to ambient (R_th(j-a)) under standard JEDEC test conditions?

R_th(j-a) is 85 K/W when mounted on a 70 µm thick copper layer on FR4 board per Figure 6. This value assumes minimum footprint layout; using the larger 25.4 mm² copper area (Figure 5) reduces R_th(j-a) to 42 K/W, significantly improving thermal headroom.

PSMN1R4-40YSHX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: SOT-1023, 4-LFPAK

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 40 V

Current - Continuous Drain (Id) @ 25°C:: 240A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 10V

Rds On (Max) @ Id, Vgs:: 1.4mOhm @ 25A, 10V

Vgs(th) (Max) @ Id:: 3.6V @ 1mA

Gate Charge (Qg) (Max) @ Vgs:: 96 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 7523 pF @ 20 V

FET Feature:: -

Power Dissipation (Max):: 333W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: LFPAK56, Power-SO8

PSMN1R4-40YSHX FAQ

1.How can I place an order for PSMN1R4-40YSHX through Aetrix?

Please submit a Request for Quotation (RFQ) for PSMN1R4-40YSHX 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 PSMN1R4-40YSHX reliable?

The price and inventory of PSMN1R4-40YSHX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PSMN1R4-40YSHX is usually 5 days.

3.What payment methods are accepted for PSMN1R4-40YSHX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PSMN1R4-40YSHX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PSMN1R4-40YSHX?

PSMN1R4-40YSHX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PSMN1R4-40YSHX 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 PSMN1R4-40YSHX?

For technical support, including PSMN1R4-40YSHX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PSMN1R4-40YSHX requirements.

6.How does Aetrix verify that PSMN1R4-40YSHX is sourced from the original manufacturer or authorized distributors?

All PSMN1R4-40YSHX 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 PSMN1R4-40YSHX meets industry standards.

7.What is the process for return or replacement of PSMN1R4-40YSHX?

All PSMN1R4-40YSHX units undergo pre-shipment inspection (PSI). If there is an issue with PSMN1R4-40YSHX, 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 PSMN1R4-40YSHX part is unused and in its original packaging.

Return procedure for PSMN1R4-40YSHX:

1.Submit a request within 90 days.

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

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