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

Vishay Siliconix IRFR310TR

Name: IRFR310TR
Brand: Vishay Siliconix
SKU: IRFR310TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFR310TR

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

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

Datasheet:: IRFR310TR.pdf

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

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Product details

Overview

IRFR310TR 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 repetitive avalanche rating-designed for high-voltage DC-DC converters, offline SMPS auxiliary supplies, and industrial motor control interface stages.

For engineers reviewing the IRFR310TR datasheet, IRFR310TR pinout, IRFR310TR application, or IRFR310TR equivalent, key selection criteria include its 400 V V_DS, 25 W T_C power dissipation, 86 mJ single-pulse avalanche energy, and compatibility with vapor-phase and wave soldering processes on FR-4 PCBs.

Technical Context

This third-generation trench MOSFET employs ruggedized silicon design with dynamic dV/dt rating up to 4.0 V/ns and fully rated avalanche capability. Its gate threshold voltage (2.0–4.0 V) supports standard 10 V gate drive while maintaining low leakage (±100 nA I_GSS) and tight V_DS temperature coefficient (0.47 V/°C).

The device integrates a fast-recovery body diode (t_rr = 240–540 ns, Q_rr = 0.85–1.6 μC) and exhibits low internal inductance (L_D = 4.5 nH, L_S = 7.5 nH), enabling clean switching waveforms in hard-switched topologies with R_g = 24 Ω and V_DD = 200 V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	400 V - supports primary-side switching in 380 V DC bus and 230 V AC rectified applications
R_DS(on) @ V_GS = 10 V	3.6 Ω - enables 1.7 A continuous drain current at T_C = 25 °C with <1.0 W conduction loss
Q_g	12 nC - determines gate drive power requirement and switching speed in 100–500 kHz SMPS designs
E_AS	86 mJ - ensures robustness against unclamped inductive turn-off transients in relay drivers and solenoid controls
R_thJC	5.0 °C/W - allows direct heatsinking to metal chassis or thermal pad for thermal management in compact layouts
t_r/t_f	9.9 ns / 11 ns - supports fast edge rates with minimal switching loss in high-frequency flyback and forward converters

Pinout & Package

DPAK (TO-252) surface-mount package with exposed drain pad for thermal conduction; standardized 3-pin layout optimized for automated assembly and PCB thermal relief.

Pin/Terminal	Circuit Role	Design Meaning
G (Gate)	Control input	Receives 10 V logic-level drive; 1.9 nC Q_gs enables rapid turn-on with minimal Miller effect
D (Drain)	High-side power output	Connected to 400 V rail; thermally bonded to exposed copper pad for 5.0 °C/W junction-to-case path
S (Source)	Power return / reference	Provides low-inductance source return (L_S = 7.5 nH) and gate drive reference for stable switching

Key Features

Feature	Design Value
Repetitive avalanche rated	1.7 A I_AR, 2.5 mJ E_AR - sustains repeated inductive turn-off stress without degradation in motor gate drivers
Dynamic dV/dt immunity	4.0 V/ns - prevents false turn-on in high-noise industrial environments with fast-rising bus voltages
Fast body diode recovery	t_rr = 240–540 ns, Q_rr = 0.85–1.6 μC - reduces cross-conduction loss and EMI in synchronous rectifier and bidirectional switch applications
Surface-mount (DPAK)	Compatible with vapor-phase, infrared, and wave soldering - supports high-volume manufacturing on FR-4 PCBs with 1" thermal pad

Applications

AC-DC Adapter Auxiliary Supply	Industrial Relay Driver
Use Scenario: Provides isolated bias supply for PWM controller ICs in 230 V AC-input offline adapters. IC Role / Device Role / Timing Role: High-side switch in flyback snubber or auxiliary winding rectifier stage, operating at 65–130 kHz. Use Value: 400 V V_DS withstands reflected flyback spikes; 3.6 Ω R_DS(on) minimizes standby losses below 100 mW.	Use Scenario: Drives 24 V DC industrial relays and solenoids in PLC output modules. IC Role / Device Role / Timing Role: Low-duty-cycle, high-voltage switch interfacing microcontroller GPIO to inductive loads. Use Value: 86 mJ E_AS absorbs coil energy during turn-off; 1.7 A I_D handles 1.2 A relay hold current with margin.
DC-DC Converter Primary Switch	LED Driver High-Side Switch
Use Scenario: Primary-side switch in 48 V input telecom DC-DC converters delivering 12 V/5 A output. IC Role / Device Role / Timing Role: Hard-switched MOSFET in forward or half-bridge topology, switching at 250 kHz. Use Value: 12 nC Q_g enables efficient gate drive with 1 W driver IC; 5.0 °C/W R_thJC maintains T_J < 125 °C under full load.	Use Scenario: High-side current regulator for 36 V string LED lighting in commercial signage. IC Role / Device Role / Timing Role: Constant-current switch in linear+PWM hybrid dimming architecture. Use Value: 400 V rating accommodates 36 V string + 100 V transient margin; low Q_gd/Q_gs ratio (3.4) improves PWM linearity.

AC-DC Adapter Auxiliary Supply

Industrial Relay Driver

Use Scenario: Provides isolated bias supply for PWM controller ICs in 230 V AC-input offline adapters.

IC Role / Device Role / Timing Role: High-side switch in flyback snubber or auxiliary winding rectifier stage, operating at 65–130 kHz.

Use Value: 400 V V_DS withstands reflected flyback spikes; 3.6 Ω R_DS(on) minimizes standby losses below 100 mW.

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

IC Role / Device Role / Timing Role: Low-duty-cycle, high-voltage switch interfacing microcontroller GPIO to inductive loads.

Use Value: 86 mJ E_AS absorbs coil energy during turn-off; 1.7 A I_D handles 1.2 A relay hold current with margin.

DC-DC Converter Primary Switch

LED Driver High-Side Switch

Use Scenario: Primary-side switch in 48 V input telecom DC-DC converters delivering 12 V/5 A output.

IC Role / Device Role / Timing Role: Hard-switched MOSFET in forward or half-bridge topology, switching at 250 kHz.

Use Value: 12 nC Q_g enables efficient gate drive with 1 W driver IC; 5.0 °C/W R_thJC maintains T_J < 125 °C under full load.

Use Scenario: High-side current regulator for 36 V string LED lighting in commercial signage.

IC Role / Device Role / Timing Role: Constant-current switch in linear+PWM hybrid dimming architecture.

Use Value: 400 V rating accommodates 36 V string + 100 V transient margin; low Q_gd/Q_gs ratio (3.4) improves PWM linearity.

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
IRFR3710TRPbF	100 V V_DS, 5.8 A I_D, 0.055 Ω R_DS(on) - lower voltage, higher current, much lower on-resistance	Not suitable for >100 V bus applications; better for 12–48 V DC systems requiring <0.1 W conduction loss	Select only when system V_DS stress remains ≤80 V and higher current capacity is required.
SiHFR310-GE3	Identical V_DS, R_DS(on), Q_g, and package; RoHS-compliant with GE3 suffix; same Vishay Siliconix die and DPAK construction	No functional or layout difference; qualified for same industrial temperature range and avalanche conditions	Drop-in replacement with identical electrical and thermal performance; preferred for new designs requiring halogen-free compliance.

Compared with IRFR310TR, IRFR3710TRPbF trades off voltage rating for lower R_DS(on) and higher current, while SiHFR310-GE3 offers identical performance with updated environmental compliance-making it the most direct alternative for legacy design refreshes.

Availability

IRFR310TR is available at Aetrix Electronics and suitable for industrial motor control, AC-DC auxiliary supplies, and DC-DC converter primary-side switching requiring stable component supply across extended production lifecycles.

Supply support for IRFR310TR 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 IRFR310TR belongs to Vishay's third-generation high-voltage power MOSFET family, engineered for ruggedness in unclamped inductive switching and cost-effective integration into space-constrained surface-mount power stages.

FAQ

What is the maximum continuous drain current for IRFR310TR at 100 °C case temperature?

The IRFR310TR supports 1.1 A continuous drain current at T_C = 100 °C, derated linearly from 1.7 A at 25 °C using a 0.20 W/°C factor. This reflects thermal limits of the DPAK package mounted on standard FR-4 PCBs per Vishay's test conditions in document 91272.

Does IRFR310TR have a built-in body diode, and what are its key recovery parameters?

Yes, IRFR310TR includes an integral body diode rated for 1.7 A continuous source-drain current. Its reverse recovery time is 240–540 ns and reverse recovery charge is 0.85–1.6 μC at T_J = 25 °C, IF = 2.0 A, and dI/dt = 100 A/μs-critical for minimizing switching loss in freewheeling paths.

Can IRFR310TR be used with 5 V logic-level gate drive?

No-IRFR310TR is not a logic-level MOSFET. Its gate threshold voltage ranges from 2.0 V to 4.0 V, but R_DS(on) is specified only at V_GS = 10 V (3.6 Ω). At 5 V, R_DS(on) increases significantly and is not characterized in the datasheet; use IRFR310TR only with ≥10 V gate drive.

What is the thermal resistance from junction to ambient for IRFR310TR on a 1" square PCB?

When mounted on a 1" square FR-4 or G-10 PCB, the IRFR310TR has a maximum junction-to-ambient thermal resistance (R_thJA) of 50 °C/W. This value assumes standard JEDEC test conditions and defines the worst-case steady-state temperature rise under 2.5 W power dissipation.

Is IRFR310TR suitable for avalanche energy handling in inductive load switching?

Yes-IRFR310TR is fully repetitive avalanche rated with 2.5 mJ E_AR and 1.7 A I_AR, and single-pulse rated for 86 mJ E_AS. These values are validated per Vishay's unclamped inductive test circuit (Fig. 12) and enable reliable operation in relay, solenoid, and transformer primary switching where inductive kickback occurs.

IRFR310TR 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:: Obsolete

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

IRFR310TR FAQ

1.How can I place an order for IRFR310TR through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFR310TR 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 IRFR310TR reliable?

The price and inventory of IRFR310TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFR310TR is usually 5 days.

3.What payment methods are accepted for IRFR310TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFR310TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFR310TR?

IRFR310TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFR310TR 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 IRFR310TR?

For technical support, including IRFR310TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFR310TR requirements.

6.How does Aetrix verify that IRFR310TR is sourced from the original manufacturer or authorized distributors?

All IRFR310TR 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 IRFR310TR meets industry standards.

7.What is the process for return or replacement of IRFR310TR?

All IRFR310TR units undergo pre-shipment inspection (PSI). If there is an issue with IRFR310TR, 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 IRFR310TR part is unused and in its original packaging.

Return procedure for IRFR310TR:

1.Submit a request within 90 days.

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

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