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

Vishay Siliconix IRFR310PBF

Name: IRFR310PBF
Brand: Vishay Siliconix
SKU: IRFR310PBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFR310PBF

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

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

Datasheet:: IRFR310PBF.pdf

Description:: MOSFET N-CH 400V 1.7A DPAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRFR310PBF from Vishay Siliconix is a 400 V, 1.7 A N-channel surface-mount power MOSFET in DPAK (TO-252) package, featuring 3.6 Ω R_DS(on) at V_GS = 10 V, 12 nC total gate charge, and full repetitive avalanche rating - designed for high-voltage DC-DC converters, AC-DC auxiliary supplies, and industrial motor control snubbers.

For engineers reviewing the IRFR310PBF datasheet, IRFR310PBF pinout, IRFR310PBF application, or IRFR310PBF equivalent, key selection criteria include its 400 V blocking capability, 86 mJ single-pulse avalanche energy, 4.0 V/ns peak diode recovery dV/dt rating, and PCB-mount thermal resistance of 50 °C/W - critical for reliable operation in flyback clamp circuits and unclamped inductive switching.

Technical Context

This third-generation planar vertical MOSFET uses ruggedized silicon design with optimized cell layout to achieve stable avalanche performance and fast switching. Its gate threshold voltage (2.0–4.0 V) and low Q_gd/Q_g ratio (6.5/12 nC) support clean turn-off in hard-switched topologies.

The device integrates an intrinsic body diode with 1.6 V forward drop at 1.7 A and 240–540 ns reverse recovery time, enabling use in freewheeling and synchronous rectification roles where controlled diode conduction is required without external Schottky supplementation.

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)	3.6 Ω @ V_GS = 10 V - enables <1.7 A continuous drain current with ≤6.1 W conduction loss at T_C = 25 °C
Q_g	12 nC - determines gate drive power requirement and switching speed in 100–500 kHz applications
E_AS	86 mJ - ensures robustness against unclamped inductive energy in relay drivers and solenoid controls
dV/dt	4.0 V/ns - sustains reliable operation during fast voltage transients in snubberless designs
R_thJA (PCB mount)	50 °C/W - defines thermal derating to 2.5 W max power dissipation on 1" FR-4 board
I_D (T_C = 100 °C)	1.1 A - sets usable current limit in thermally constrained environments like sealed enclosures

Pinout & Package

DPAK (TO-252) surface-mount package with exposed drain pad for thermal conduction; standard 3-pin configuration with G–D–S pin order viewed from top side (marking side), compatible with vapor-phase and wave soldering per JEDEC standards.

Pin/Terminal	Circuit Role	Design Meaning
G (Gate)	Control electrode	Accepts 10 V logic-level drive; 2.0–4.0 V V_GS(th) ensures turn-on with standard microcontroller GPIO
D (Drain)	High-voltage output node	Connected to exposed copper pad on bottom; carries full 400 V blocking and 1.7 A load current
S (Source)	Reference and return path	Provides Kelvin sense point for current monitoring; ties to ground plane for low-inductance return path

Key Features

Feature	Design Value
Repetitive avalanche rated	Supports ≥1.7 A repetitive avalanche current without degradation - essential for overvoltage protection in inductive loads
Dynamic dV/dt rating	4.0 V/ns immunity prevents spurious turn-on during fast voltage transients in high-noise industrial environments
Fast switching	21 ns turn-off delay + 11 ns fall time enables efficient operation up to 500 kHz in resonant converters
Surface-mount (DPAK)	Enables automated assembly and high-power density layouts; thermal pad allows direct PCB heat sinking
Low Q_gd/Q_g ratio	54 % (6.5/12 nC) reduces Miller effect and improves gate drive efficiency in hard-switched topologies

Applications

AC-DC Auxiliary Supply	Flyback Snubber Circuit
Use Scenario: Provides bias supply for PWM controller ICs in offline SMPS using auxiliary winding feedback. IC Role / Device Role / Timing Role: High-voltage switch regulating auxiliary winding energy into low-voltage DC rail. Use Value: 400 V V_DS withstands reflected flyback spikes; 86 mJ E_AS absorbs leakage inductance energy without external clamping.	Use Scenario: Absorbs voltage overshoot across main power switch during turn-off in discontinuous-mode flyback converters. IC Role / Device Role / Timing Role: Passive clamp switch activated by voltage threshold across RCD network. Use Value: Repetitive avalanche rating handles repeated energy dumps; 4.0 V/ns dV/dt rating prevents false triggering during fast transients.
Industrial Relay Driver	DC Motor Brake Control
Use Scenario: Drives coil of high-voltage industrial relays (e.g., 240 VAC contactors) from PLC outputs. IC Role / Device Role / Timing Role: Low-side switch controlling relay coil current with integrated flyback diode conduction. Use Value: Body diode V_SD = 1.6 V at 1.7 A provides low-loss freewheeling; 240 ns trr limits switching losses during rapid coil de-energization.	Use Scenario: Shorting motor terminals to dissipate kinetic energy during emergency stop in 24–48 V brushed DC systems. IC Role / Device Role / Timing Role: High-current, high-voltage brake switch activated by safety controller. Use Value: 6.0 A pulsed drain current supports 10× stall current surges; 50 °C/W R_thJA enables 2.5 W dissipation on standard PCB without heatsink.

AC-DC Auxiliary Supply

Flyback Snubber Circuit

Use Scenario: Provides bias supply for PWM controller ICs in offline SMPS using auxiliary winding feedback.

IC Role / Device Role / Timing Role: High-voltage switch regulating auxiliary winding energy into low-voltage DC rail.

Use Value: 400 V V_DS withstands reflected flyback spikes; 86 mJ E_AS absorbs leakage inductance energy without external clamping.

Use Scenario: Absorbs voltage overshoot across main power switch during turn-off in discontinuous-mode flyback converters.

IC Role / Device Role / Timing Role: Passive clamp switch activated by voltage threshold across RCD network.

Use Value: Repetitive avalanche rating handles repeated energy dumps; 4.0 V/ns dV/dt rating prevents false triggering during fast transients.

Industrial Relay Driver

DC Motor Brake Control

Use Scenario: Drives coil of high-voltage industrial relays (e.g., 240 VAC contactors) from PLC outputs.

IC Role / Device Role / Timing Role: Low-side switch controlling relay coil current with integrated flyback diode conduction.

Use Value: Body diode V_SD = 1.6 V at 1.7 A provides low-loss freewheeling; 240 ns trr limits switching losses during rapid coil de-energization.

Use Scenario: Shorting motor terminals to dissipate kinetic energy during emergency stop in 24–48 V brushed DC systems.

IC Role / Device Role / Timing Role: High-current, high-voltage brake switch activated by safety controller.

Use Value: 6.0 A pulsed drain current supports 10× stall current surges; 50 °C/W R_thJA enables 2.5 W dissipation on standard PCB without heatsink.

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
STP3NK60ZFP	600 V V_DS, 2.2 Ω R_DS(on), TO-220FP package - higher voltage rating but through-hole only	Requires PCB through-hole mounting and larger footprint; better suited for higher-voltage mains-connected stages	Select when 600 V blocking is mandatory and surface-mount is not required
IXTP1R1N50D	500 V V_DS, 1.1 Ω R_DS(on), TO-220 package - lower on-resistance but no avalanche rating	Lacks repetitive avalanche capability; unsuitable for unclamped inductive loads without external protection	Select only in low-energy, well-clamped circuits where avalanche robustness is not needed

Compared with STP3NK60ZFP and IXTP1R1N50D, IRFR310PBF uniquely combines DPAK surface-mount compatibility, 400 V rating, full repetitive avalanche qualification, and 50 °C/W PCB thermal resistance - making it optimal for space-constrained, high-reliability auxiliary and snubber functions where both voltage margin and ruggedness are required.

Availability

IRFR310PBF is available at Aetrix Electronics and suitable for AC-DC auxiliary supplies, flyback snubber circuits, and industrial relay drivers requiring stable component supply across extended production lifecycles.

Supply support for IRFR310PBF 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, specializing in high-reliability MOSFETs, diodes, and optoelectronics for industrial, automotive, and computing markets.

The IRFR310PBF belongs to Vishay's third-generation high-voltage power MOSFET family, engineered for ruggedness in unclamped inductive switching and optimized for cost-sensitive, high-voltage auxiliary and protection circuits.

FAQ

What is the maximum continuous drain current for IRFR310PBF at 100 °C case temperature?

The IRFR310PBF supports 1.1 A continuous drain current at T_C = 100 °C, as specified in the Absolute Maximum Ratings table. This derating reflects thermal limitations of the DPAK package under sustained high-temperature operation and must be validated against actual board layout and ambient conditions. The IRFR310PBF's 0.20 W/°C linear derating factor allows interpolation between 25 °C (1.7 A) and 100 °C (1.1 A) for intermediate temperatures.

Does IRFR310PBF have a qualified repetitive avalanche rating?

Yes, the IRFR310PBF is fully repetitive avalanche rated with I_AR = 1.7 A and E_AR = 2.5 mJ, verified per test condition b in the datasheet (V_DD = 50 V, L = 52 mH, R_g = 25 Ω). This rating confirms sustained reliability under repeated inductive energy stress, distinguishing it from non-avalanche-rated MOSFETs. The IRFR310PBF's ruggedized silicon design enables this capability without external protection components.

What is the gate-source threshold voltage range for IRFR310PBF?

The IRFR310PBF has a gate-source threshold voltage (V_GS(th)) range of 2.0 V to 4.0 V at V_DS = V_GS and I_D = 250 μA. This range ensures compatibility with standard 3.3 V and 5 V logic-level microcontrollers while providing noise margin against false turn-on. The IRFR310PBF's typical V_GS(th) falls within this band and is confirmed across production lots per Vishay's characterization data.

Can IRFR310PBF be used in place of IRFU310PbF?

No - IRFR310PBF (DPAK/TO-252) and IRFU310PbF (IPAK/TO-251) are mechanically incompatible due to different packages and pinouts. While electrically similar (same V_DS, R_DS(on), Q_g), the IRFR310PBF requires surface-mount pads per Application Note 826, whereas IRFU310PbF needs through-hole holes. Substitution would require PCB redesign. The IRFR310PBF is not a drop-in replacement for IRFU310PbF.

What is the typical body diode reverse recovery time for IRFR310PBF?

At T_J = 25 °C, I_F = 2.0 A, and dI/dt = 100 A/μs, the IRFR310PBF exhibits a typical body diode reverse recovery time (t_rr) of 240 ns, with a maximum of 540 ns. This parameter directly impacts switching losses during commutation and is measured under standardized conditions defined in the datasheet. The IRFR310PBF's t_rr value is consistent across its qualified manufacturing sites and supports moderate-frequency freewheeling applications.

IRFR310PBF Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

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

Packaging:: Tube

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 400 V

Current - Continuous Drain (Id) @ 25°C:: 1.7A (Tc)

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

Rds On (Max) @ Id, Vgs:: 3.6Ohm @ 1A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 12 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 170 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 2.5W (Ta), 25W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DPAK

IRFR310PBF FAQ

1.How can I place an order for IRFR310PBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFR310PBF 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 IRFR310PBF reliable?

The price and inventory of IRFR310PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFR310PBF is usually 5 days.

3.What payment methods are accepted for IRFR310PBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFR310PBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFR310PBF?

IRFR310PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFR310PBF 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 IRFR310PBF?

For technical support, including IRFR310PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFR310PBF requirements.

6.How does Aetrix verify that IRFR310PBF is sourced from the original manufacturer or authorized distributors?

All IRFR310PBF 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 IRFR310PBF meets industry standards.

7.What is the process for return or replacement of IRFR310PBF?

All IRFR310PBF units undergo pre-shipment inspection (PSI). If there is an issue with IRFR310PBF, 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 IRFR310PBF part is unused and in its original packaging.

Return procedure for IRFR310PBF:

1.Submit a request within 90 days.

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

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