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

Vishay Siliconix SIHFR320TR-GE3

Name: SIHFR320TR-GE3
Brand: Vishay Siliconix
SKU: SIHFR320TR-GE3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SIHFR320TR-GE3

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: SIHFR320TR-GE3.pdf

Description:: MOSFET N-CHANNEL 400V

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SIHFR320TR-GE3 from Vishay Siliconix is a 400 V, 3.1 A N-channel surface-mount power MOSFET in DPAK (TO-252) package, featuring 1.8 Ω R_DS(on) at V_GS = 10 V, 20 nC total gate charge, and repetitive avalanche rating-designed for high-voltage DC-DC converters, AC-DC auxiliary supplies, and industrial motor control snubbers.

For engineers reviewing the SIHFR320TR-GE3 datasheet, SIHFR320TR-GE3 pinout, SIHFR320TR-GE3 application, or SIHFR320TR-GE3 equivalent, key selection criteria include its 400 V V_DS, 1.8 Ω on-resistance, 20 nC Q_g, 160 mJ single-pulse avalanche energy, and DPAK thermal performance with R_thJC = 3.0 °C/W.

Technical Context

This third-generation silicon power MOSFET uses planar V-groove technology optimized for rugged unclamped inductive switching. Its dynamic dV/dt rating of 4.0 V/ns and body diode reverse recovery time of 270–600 ns support reliable operation in hard-switched flyback and resonant topologies.

The device integrates a fast-recovery intrinsic body diode (V_SD = 1.6 V at 3.1 A) and is characterized for linear derating (0.33 W/°C) up to 150 °C junction temperature, enabling stable operation in compact PCB-mounted designs without heatsinks.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	400 V - supports primary-side switching in 380 V DC bus and universal-input offline SMPS
R_DS(on)	1.8 Ω @ V_GS = 10 V - enables low conduction loss in <5 W auxiliary supplies and bias rails
Q_g	20 nC - balances switching speed and gate drive loss in 50–500 kHz applications
E_AS	160 mJ - sustains unclamped inductive energy during startup/fault in relay drivers and solenoid controls
I_D (T_C = 25 °C)	3.1 A - delivers full rated current with minimal derating when mounted on 1" FR-4 PCB
R_thJC	3.0 °C/W - allows direct thermal coupling to copper pour or heatsink for >30 W pulsed dissipation
trr	270–600 ns - limits diode recovery loss in discontinuous conduction mode (DCM) flyback converters

Pinout & Package

DPAK (TO-252) surface-mount package with exposed drain pad for thermal and electrical connection; 3-pin configuration optimized for automated assembly and high-current PCB routing.

Pin/Terminal	Circuit Role	Design Meaning
G (Gate)	Control input	Accepts 10 V logic-level drive; threshold voltage 2.0–4.0 V ensures robust turn-on margin
D (Drain)	High-side switch node	Exposed metal tab connects directly to PCB copper pour for thermal management and low-inductance return path
S (Source)	Power reference / return	Provides Kelvin sense point for accurate current monitoring; ties to ground plane with low-impedance trace

Key Features

Feature	Design Value
Repetitive avalanche rated	Withstands 3.1 A I_AR and 4.2 mJ E_AR indefinitely under controlled pulse conditions-eliminates need for external clamping in inductive load switching
Dynamic dV/dt immunity	Rated 4.0 V/ns-prevents false turn-on in high dv/dt environments like half-bridge leg commutation
Fast switching	td(on) = 10 ns, tr = 14 ns, td(off) = 30 ns, tf = 13 ns-reduces transition losses in high-frequency SMPS
Surface-mount (DPAK)	Compatible with vapor-phase and IR reflow; footprint matches JEDEC TO-252 standard for drop-in replacement and layout reuse
Lead (Pb)-free and halogen-free	Meets RoHS 2011/65/EU and Vishay's material categorization per doc. 99912-qualified for automotive and industrial end equipment

Applications

AC-DC Auxiliary Power Supply	Industrial Relay Driver
Use Scenario: Provides isolated 12 V/5 V bias supply for PWM controllers and gate drivers in offline SMPS. IC Role / Device Role / Timing Role: Primary-side high-side switch in DCM flyback topology operating at 65–130 kHz. Use Value: 1.8 Ω R_DS(on) minimizes standby loss; 160 mJ E_AS absorbs leakage inductance spikes during MOSFET turn-off.	Use Scenario: Drives 24 VDC industrial relays and solenoids in PLC output modules. IC Role / Device Role / Timing Role: Low-duty-cycle, high-voltage switching element with integrated freewheeling diode. Use Value: Repetitive avalanche rating (I_AR = 3.1 A) eliminates external flyback diode; 400 V V_DS accommodates 2× supply transients.
DC-DC Converter Snubber	High-Voltage LED Driver
Use Scenario: Active clamp or passive snubber switch in 48–380 V input DC-DC converters. IC Role / Device Role / Timing Role: Fast-turning switch absorbing transformer leakage energy during reset phase. Use Value: 20 nC Q_g enables precise timing control; 4.0 V/ns dV/dt rating prevents spurious triggering in noisy high-dv/dt nodes.	Use Scenario: Constant-current switch in series-string LED drivers for street lighting and signage. IC Role / Device Role / Timing Role: High-side current regulator controlling 100–200 V LED strings in buck or buck-boost topology. Use Value: 3.1 A continuous drain current supports >35 W string power; 150 °C T_J(max) ensures reliability in enclosed luminaires.

AC-DC Auxiliary Power Supply

Industrial Relay Driver

Use Scenario: Provides isolated 12 V/5 V bias supply for PWM controllers and gate drivers in offline SMPS.

IC Role / Device Role / Timing Role: Primary-side high-side switch in DCM flyback topology operating at 65–130 kHz.

Use Value: 1.8 Ω R_DS(on) minimizes standby loss; 160 mJ E_AS absorbs leakage inductance spikes during MOSFET turn-off.

Use Scenario: Drives 24 VDC industrial relays and solenoids in PLC output modules.

IC Role / Device Role / Timing Role: Low-duty-cycle, high-voltage switching element with integrated freewheeling diode.

Use Value: Repetitive avalanche rating (I_AR = 3.1 A) eliminates external flyback diode; 400 V V_DS accommodates 2× supply transients.

DC-DC Converter Snubber

High-Voltage LED Driver

Use Scenario: Active clamp or passive snubber switch in 48–380 V input DC-DC converters.

IC Role / Device Role / Timing Role: Fast-turning switch absorbing transformer leakage energy during reset phase.

Use Value: 20 nC Q_g enables precise timing control; 4.0 V/ns dV/dt rating prevents spurious triggering in noisy high-dv/dt nodes.

Use Scenario: Constant-current switch in series-string LED drivers for street lighting and signage.

IC Role / Device Role / Timing Role: High-side current regulator controlling 100–200 V LED strings in buck or buck-boost topology.

Use Value: 3.1 A continuous drain current supports >35 W string power; 150 °C T_J(max) ensures reliability in enclosed luminaires.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRFR320TRPbF-BE3	Same die, identical R_DS(on), Q_g, and avalanche specs; Pb-free variant with BE3 suffix and different tape/reel packaging	No functional difference; compatible in all SIHFR320TR-GE3 designs requiring lead-free compliance	Select when sourcing from legacy IR brand channels or where BE3 packaging is specified in BOM
STP4NK40Z	400 V, 3.5 A, R_DS(on) = 1.7 Ω, Q_g = 19 nC-but uses TO-220 package and lacks repetitive avalanche rating	Requires through-hole mounting and external avalanche protection; higher R_thJA (62 °C/W) limits PCB-only thermal performance	Choose only if DPAK footprint is not required and discrete avalanche clamping is acceptable

Compared with IRFR320TRPbF-BE3, SIHFR320TR-GE3 offers identical electrical performance with Vishay's updated material coding and GE3 tape/reel standard; versus STP4NK40Z, SIHFR320TR-GE3 provides superior surface-mount integration, lower thermal resistance, and built-in avalanche ruggedness-critical for space-constrained and high-reliability industrial systems.

Availability

SIHFR320TR-GE3 is available at Aetrix Electronics and suitable for AC-DC auxiliary supplies, industrial relay drivers, and high-voltage LED drivers requiring stable component supply across extended production lifecycles.

Supply support for SIHFR320TR-GE3 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

Vishay Siliconix is a global leader in discrete semiconductors and passive components, specializing in high-reliability power MOSFETs, diodes, and optoelectronics for industrial, automotive, and computing markets.

The SiHFx320 family delivers third-generation high-voltage power MOSFETs optimized for ruggedness, fast switching, and cost-effective surface-mount implementation in offline and intermediate-bus power conversion.

FAQ

What is the maximum continuous drain current for SIHFR320TR-GE3 at 100 °C case temperature?

The SIHFR320TR-GE3 supports 2.0 A continuous drain current at T_C = 100 °C, per the Absolute Maximum Ratings table. This derating reflects thermal limits of the DPAK package mounted on standard FR-4 PCB; actual current capability may increase with enhanced copper pour or heatsinking. The SIHFR320TR-GE3 maintains safe operation up to 150 °C junction temperature.

Does SIHFR320TR-GE3 require a gate resistor for reliable switching?

Yes-SIHFR320TR-GE3 benefits from an external gate resistor (R_g) to control dI/dt and suppress ringing. Typical evaluation uses R_g = 18 Ω for switching tests (Fig. 10), and R_g = 25 Ω for avalanche testing. The SIHFR320TR-GE3 gate charge of 20 nC means R_g values between 10 Ω and 47 Ω balance speed and EMI in most 50–200 kHz applications.

Can SIHFR320TR-GE3 replace IRFR320 in existing designs?

Yes-SIHFR320TR-GE3 is a direct Vishay-branded replacement for IRFR320TRPbF-BE3 and IRFR320TRPbF, sharing identical die, pinout, R_DS(on), Q_g, and avalanche ratings. The SIHFR320TR-GE3 uses the same DPAK (TO-252) package and GE3 tape/reel standard, enabling drop-in substitution without layout or firmware changes.

What is the body diode forward voltage of SIHFR320TR-GE3 at 3.1 A and 25 °C?

The body diode forward voltage (V_SD) of SIHFR320TR-GE3 is 1.6 V at I_S = 3.1 A and T_J = 25 °C, as specified in the Drain-Source Body Diode Characteristics table. This value increases with temperature and current; at 125 °C, V_SD rises to approximately 1.3 V due to negative temperature coefficient, supporting predictable freewheeling behavior in synchronous rectifier or bidirectional switch applications.

Is SIHFR320TR-GE3 suitable for use in automotive applications?

The SIHFR320TR-GE3 is not AEC-Q101 qualified and is not recommended for automotive safety-critical systems. However, it is widely used in non-safety automotive subsystems such as infotainment power supplies, body control module auxiliary rails, and HVAC fan drivers-provided system-level validation confirms thermal, EMI, and lifetime requirements. For SIHFR320TR-GE3 in automotive contexts, refer to Vishay's reliability data (doc. 91273) and consult application engineering support.

SIHFR320TR-GE3 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 400 V

Current - Continuous Drain (Id) @ 25°C:: 3.1A (Tc)

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

Rds On (Max) @ Id, Vgs:: 1.8Ohm @ 1.9A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 20 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 350 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 2.5W (Ta), 42W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-252AA

SIHFR320TR-GE3 FAQ

1.How can I place an order for SIHFR320TR-GE3 through Aetrix?

Please submit a Request for Quotation (RFQ) for SIHFR320TR-GE3 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 SIHFR320TR-GE3 reliable?

The price and inventory of SIHFR320TR-GE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SIHFR320TR-GE3 is usually 5 days.

3.What payment methods are accepted for SIHFR320TR-GE3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIHFR320TR-GE3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SIHFR320TR-GE3?

SIHFR320TR-GE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SIHFR320TR-GE3 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 SIHFR320TR-GE3?

For technical support, including SIHFR320TR-GE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIHFR320TR-GE3 requirements.

6.How does Aetrix verify that SIHFR320TR-GE3 is sourced from the original manufacturer or authorized distributors?

All SIHFR320TR-GE3 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 SIHFR320TR-GE3 meets industry standards.

7.What is the process for return or replacement of SIHFR320TR-GE3?

All SIHFR320TR-GE3 units undergo pre-shipment inspection (PSI). If there is an issue with SIHFR320TR-GE3, 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 SIHFR320TR-GE3 part is unused and in its original packaging.

Return procedure for SIHFR320TR-GE3:

1.Submit a request within 90 days.

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

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