Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Vishay Siliconix IRF720LPBF

Name: IRF720LPBF
Brand: Vishay Siliconix
SKU: IRF720LPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: IRF720LPBF

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: TO-262-3 Long Leads, I2PAK, TO-262AA

Datasheet:: IRF720LPBF.pdf

Description:: MOSFET N-CH 400V 3.3A TO262-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:7,000

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

IRF720LPBF from Vishay Siliconix is a 400 V, 3.3 A N-channel power MOSFET in D2PAK (TO-263) package, featuring 1.8 Ω R_DS(on) at V_GS = 10 V, 20 nC total gate charge, and repetitive avalanche rating - used as a high-voltage switching element in offline SMPS, motor drive half-bridges, and industrial AC/DC converters.

For engineers reviewing the IRF720LPBF datasheet, IRF720LPBF pinout, IRF720LPBF application, or IRF720LPBF equivalent, key selection criteria include its 400 V V_DS, 1.8 Ω on-resistance at 10 V gate drive, 2.5 °C/W junction-to-case thermal resistance, and suitability for unclamped inductive switching with 190 mJ single-pulse avalanche energy.

Technical Context

This third-generation planar MOSFET uses ruggedized die design optimized for fast switching and high dv/dt immunity (4.0 V/ns peak diode recovery). Its gate threshold voltage range (2.0–4.0 V) ensures reliable turn-on with standard 10 V logic-level drive while maintaining noise immunity.

The device integrates a low-Q_rr (1.4–3.0 μC) body diode with 270–600 ns reverse recovery time, enabling efficient hard-switched topologies. Thermal performance is defined by 2.5 °C/W R_thJC and 40 °C/W R_thJA (PCB mount), supporting continuous operation up to T_J = 150 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	400 V - supports primary-side switching in 230 VAC offline converters without derating
R_DS(on)	1.8 Ω @ V_GS = 10 V - enables <3.3 A continuous conduction with ≤6 W conduction loss at full load
Q_g	20 nC - determines gate drive power requirement; compatible with standard MOSFET drivers (e.g., IR2110)
E_AS	190 mJ - allows safe operation under unclamped inductive load conditions (e.g., relay coils, motor windings)
I_D (T_C = 100 °C)	2.1 A - defines maximum sustained current in thermally constrained PCB-mount applications
dv/dt Rating	4.0 V/ns - ensures robustness against parasitic turn-on during high-speed switching transitions
R_thJC	2.5 °C/W - enables direct heatsink mounting for high-power dissipation up to 50 W

Pinout & Package

D2PAK (TO-263) surface-mount package with exposed drain pad for thermal and electrical connection; 3-pin configuration (G-D-S), lead (Pb)-free and halogen-free per Vishay specification.

Pin/Terminal	Circuit Role	Design Meaning
G (Gate)	Control input	Receives 10 V logic-level signal; 3.3 nC Q_gs enables fast turn-on with minimal driver stress
D (Drain)	High-voltage power output	Connected to exposed thermal pad; carries full load current and withstands 400 V transient spikes
S (Source)	Power return / reference node	Provides low-inductance source path; internal L_S = 7.5 nH limits ringing in high-di/dt switching

Key Features

Feature	Design Value
Repetitive avalanche rated	5.0 mJ EAR enables reliable operation in inductive switching circuits without external snubbers
Dynamic dv/dt rating	4.0 V/ns immunity prevents false triggering during high-slew-rate voltage transients
Fast switching	10 ns t_d(on), 14 ns t_r, 30 ns t_d(off), 13 ns t_f support >100 kHz SMPS designs
Low Q_gd/Q_g ratio	11/20 = 55% - improves Miller immunity and reduces risk of shoot-through in bridge configurations
Body diode with low Q_rr	1.4–3.0 μC Q_rr minimizes reverse recovery losses in synchronous rectification and freewheeling paths

Applications

Industrial Motor Drive	Offline Switch-Mode Power Supply
Use Scenario: Half-bridge leg in 24–48 V DC motor controllers driving brushed motors or fans. IC Role / Device Role / Timing Role: High-side or low-side switching element controlling motor phase current with PWM frequencies up to 50 kHz. Use Value: 1.8 Ω R_DS(on) limits conduction loss to <2 W at 3.3 A, while 190 mJ E_AS absorbs inductive kickback during PWM dead-time.	Use Scenario: Primary-side switch in 15–30 W flyback or forward converter for industrial control power rails. IC Role / Device Role / Timing Role: Main power switch operating at 65–100 kHz with 400 V blocking capability across universal AC input. Use Value: 400 V V_DS eliminates need for series stacking; 20 nC Q_g enables efficient drive with low-cost gate drivers.
AC/DC Front-End Converter	Relay/Contactor Driver
Use Scenario: PFC boost switch in active clamp or two-stage industrial AC/DC front-end modules. IC Role / Device Role / Timing Role: High-voltage switching transistor handling rectified 340 VDC bus with 50–100 kHz switching. Use Value: Repetitive avalanche rating (5.0 mJ EAR) sustains operation during line surges and load transients without failure.	Use Scenario: Solid-state replacement for electromechanical relays controlling HVAC actuators or solenoid valves. IC Role / Device Role / Timing Role: Low-duty-cycle, high-voltage switching device managing 24–120 VDC inductive loads. Use Value: 13 A I_DM and 190 mJ E_AS safely absorb energy from coil de-energization without external clamping diodes.

Industrial Motor Drive

Offline Switch-Mode Power Supply

Use Scenario: Half-bridge leg in 24–48 V DC motor controllers driving brushed motors or fans.

IC Role / Device Role / Timing Role: High-side or low-side switching element controlling motor phase current with PWM frequencies up to 50 kHz.

Use Value: 1.8 Ω R_DS(on) limits conduction loss to <2 W at 3.3 A, while 190 mJ E_AS absorbs inductive kickback during PWM dead-time.

Use Scenario: Primary-side switch in 15–30 W flyback or forward converter for industrial control power rails.

IC Role / Device Role / Timing Role: Main power switch operating at 65–100 kHz with 400 V blocking capability across universal AC input.

Use Value: 400 V V_DS eliminates need for series stacking; 20 nC Q_g enables efficient drive with low-cost gate drivers.

AC/DC Front-End Converter

Relay/Contactor Driver

Use Scenario: PFC boost switch in active clamp or two-stage industrial AC/DC front-end modules.

IC Role / Device Role / Timing Role: High-voltage switching transistor handling rectified 340 VDC bus with 50–100 kHz switching.

Use Value: Repetitive avalanche rating (5.0 mJ EAR) sustains operation during line surges and load transients without failure.

Use Scenario: Solid-state replacement for electromechanical relays controlling HVAC actuators or solenoid valves.

IC Role / Device Role / Timing Role: Low-duty-cycle, high-voltage switching device managing 24–120 VDC inductive loads.

Use Value: 13 A I_DM and 190 mJ E_AS safely absorb energy from coil de-energization without external clamping diodes.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRF720SPbF	D2PAK package same; identical electrical specs but non-RoHS-compliant lead finish	No functional difference; restricted to legacy industrial systems requiring Pb terminations	Select only if RoHS exemption applies and legacy board assembly process requires Pb-based soldering
SiHF720L-GE3	Same D2PAK package; identical V_DS, R_DS(on), Q_g, and avalanche ratings; halogen-free construction	Drop-in replacement with enhanced environmental compliance; same thermal and switching behavior	Preferred for new designs targeting RoHS and JEDEC MSL-1 reliability standards

Compared with IRF720LPBF, IRF720SPbF offers identical performance but lacks RoHS compliance, while SiHF720L-GE3 delivers identical electrical and thermal behavior with halogen-free materials - making it the recommended upgrade path for production designs requiring modern environmental specifications.

Availability

IRF720LPBF is available at Aetrix Electronics and suitable for industrial motor drives, offline switch-mode power supplies, and AC/DC front-end converters requiring stable component supply and long-term manufacturing continuity.

Supply support for IRF720LPBF 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 demanding industrial and power applications.

The IRF720LPBF belongs to Vishay's third-generation power MOSFET family engineered for ruggedized high-voltage switching, emphasizing fast dv/dt immunity, repetitive avalanche capability, and surface-mount thermal efficiency in D2PAK packaging.

FAQ

What is the maximum continuous drain current for IRF720LPBF at 100 °C case temperature?

The IRF720LPBF supports 2.1 A continuous drain current at T_C = 100 °C, as specified in the Absolute Maximum Ratings table. This value reflects thermal derating due to reduced heat dissipation capacity at elevated temperatures and must be validated against actual PCB layout and heatsinking in the target application. The IRF720LPBF's 2.5 °C/W R_thJC enables higher current capability when mounted to an external heatsink.

Does IRF720LPBF have a built-in body diode, and what are its key parameters?

Yes, the IRF720LPBF integrates a monolithic body diode with 3.3 A continuous forward current rating (I_S), 13 A pulsed capability (I_SM), and 1.6 V forward voltage (V_SD) at 3.3 A and 25 °C. Its reverse recovery charge (Q_rr) ranges from 1.4 to 3.0 μC, and trr is 270–600 ns - critical for minimizing losses in freewheeling and synchronous rectification paths. These values are measured with V_GS = 0 V and define the IRF720LPBF's behavior in bidirectional current flow scenarios.

Can IRF720LPBF be used in avalanche mode, and what are the limits?

Yes, the IRF720LPBF is explicitly rated for repetitive avalanche operation with 5.0 mJ energy per pulse (E_AR) and single-pulse capability of 190 mJ (E_AS). Avalanche current is limited to 3.3 A (I_AR), and operation must respect the linear derating factor of 0.40 W/°C above 25 °C case temperature. The IRF720LPBF's ruggedized die design ensures controlled avalanche behavior without parameter shift, provided pulse width and duty cycle remain within datasheet-defined boundaries.

What is the gate threshold voltage range for IRF720LPBF, and how does it affect drive requirements?

The IRF720LPBF has a gate threshold voltage (V_GS(th)) range of 2.0 V to 4.0 V at I_D = 250 μA, ensuring reliable turn-on with standard 10 V gate drive while providing noise margin against spurious triggering. This V_GS(th) window means the IRF720LPBF is not a logic-level MOSFET - it requires ≥8 V for full enhancement - and its 3.3 nC Q_gs and 20 nC Q_g dictate moderate gate drive strength, compatible with common MOSFET drivers like the TC4420 or MIC442x series.

Is IRF720LPBF RoHS-compliant, and what does the 'LPBF' suffix indicate?

Yes, IRF720LPBF is RoHS-compliant and halogen-free, as confirmed by Vishay's documentation and part numbering convention. The 'LPBF' suffix denotes lead (Pb)-free and halogen-free construction per JEDEC standards, distinguishing it from the Pb-containing IRF720SPbF variant. This compliance ensures compatibility with modern automated assembly processes and meets regulatory requirements for industrial and commercial equipment sold in EU, China, and other regulated markets - a key attribute of the IRF720LPBF in new design-in cycles.

IRF720LPBF Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Package/Case:: TO-262-3 Long Leads, I2PAK, TO-262AA

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:: 3.3A (Tc)

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

Rds On (Max) @ Id, Vgs:: 1.8Ohm @ 2A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

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

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 410 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 3.1W (Ta), 50W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-262-3

IRF720LPBF FAQ

1.How can I place an order for IRF720LPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRF720LPBF 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 IRF720LPBF reliable?

The price and inventory of IRF720LPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRF720LPBF is usually 5 days.

3.What payment methods are accepted for IRF720LPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRF720LPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRF720LPBF?

IRF720LPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRF720LPBF 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 IRF720LPBF?

For technical support, including IRF720LPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRF720LPBF requirements.

6.How does Aetrix verify that IRF720LPBF is sourced from the original manufacturer or authorized distributors?

All IRF720LPBF 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 IRF720LPBF meets industry standards.

7.What is the process for return or replacement of IRF720LPBF?

All IRF720LPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRF720LPBF, 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 IRF720LPBF part is unused and in its original packaging.

Return procedure for IRF720LPBF:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-11 Comparator Circuit: Voltage Thresholds, Op-Amp Differences, LM393 and Practical Design

Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …