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

Vishay Siliconix IRFR120PBF-BE3

Name: IRFR120PBF-BE3
Brand: Vishay Siliconix
SKU: IRFR120PBF-BE3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFR120PBF-BE3

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

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

Datasheet:: IRFR120PBF-BE3.pdf

Description:: MOSFET N-CH 100V 7.7A DPAK

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Product details

Overview

IRFR120PBF-BE3 from Vishay Siliconix is a 100 V, 7.7 A N-channel surface-mount power MOSFET in DPAK (TO-252) package, featuring 0.27 Ω R_DS(on) at V_GS = 10 V, 16 nC total gate charge, and repetitive avalanche rating-designed for DC-DC converters, motor control, and load switching in industrial power supplies.

For engineers reviewing the IRFR120PBF-BE3 datasheet, IRFR120PBF-BE3 pinout, IRFR120PBF-BE3 application, or IRFR120PBF-BE3 equivalent, key selection criteria include its 100 V V_DS, 0.27 Ω on-resistance, 16 nC Q_g, 42 W P_D (T_C), and DPAK thermal performance with R_thJC = 3.0 °C/W.

Technical Context

This third-generation TrenchFET® MOSFET uses optimized silicon process and package design to achieve fast switching (t_d(on) = 6.8 ns, t_f = 17 ns) while maintaining ruggedness via 210 mJ single-pulse avalanche energy and 7.7 A repetitive avalanche current capability.

Its dynamic dV/dt rating of 5.5 V/ns and body diode recovery time (t_rr = 130–260 ns) support reliable operation in inductive switching circuits; gate threshold voltage (2.0–4.0 V) ensures compatibility with standard 10 V gate drivers and enables stable turn-on under varying temperature conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	100 V - supports input rails up to 80 V DC with margin for transients in industrial SMPS.
R_DS(on) @ V_GS = 10 V	0.27 Ω - limits conduction loss to ≤1.0 W at 6 A continuous drain current in PCB-mounted designs.
Q_g	16 nC - determines gate drive power requirement; compatible with low-current drivers like TC4427 or UCC27531.
I_D @ T_C = 25 °C	7.7 A - enables use in 10–15 W load-switching applications without heatsink when mounted on 1" FR-4 PCB.
E_AS	210 mJ - allows safe unclamped inductive switching in relay drivers or solenoid controls without external snubbers.
R_thJC	3.0 °C/W - enables direct thermal coupling to copper pour or heatsink for high-duty-cycle operation above 2 A.
t_r/t_f	27 ns / 17 ns - reduces switching losses below 500 kHz in synchronous buck stages with minimal EMI impact.

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 terminal	Accepts 10 V logic-level drive; 4.4 nC Q_gs enables fast turn-on with <10 Ω series resistance.
D (Drain)	High-side power output	Internally connected to exposed thermal pad; must be soldered to ≥1 cm² copper area for R_thJA ≤ 50 °C/W.
S (Source)	Power return reference	Provides low-inductance source path; internal L_S = 7.5 nH minimizes shoot-through risk in half-bridge layouts.

Key Features

Feature	Design Value
Repetitive avalanche rated	7.7 A I_AR and 4.2 mJ E_AR enable robust operation in flyback snubberless designs without derating.
Dynamic dV/dt immunity	5.5 V/ns rating prevents false turn-on during high-slew-rate switching in motor drives or inverters.
Fast switching	6.8 ns t_d(on), 17 ns t_f reduce total switching loss to <150 µJ at 12 V_GS, 5 A, 100 V_DS.
Surface-mount (DPAK)	TO-252 footprint supports vapor-phase reflow; thermal pad improves power handling by 3× vs. SO-8 equivalents.
Low Q_gd/Q_g ratio	7.7/16 = 48 % - enhances Miller immunity and simplifies gate driver selection for hard-switched topologies.

Applications

DC-DC Converter High-Side Switch	Industrial Motor Driver
Use Scenario: Synchronous buck converter in 24 V input industrial PLC power module. IC Role / Device Role / Timing Role: High-side main switch operating at 250 kHz with 30 ns dead-time control. Use Value: 0.27 Ω R_DS(on) keeps conduction loss below 0.6 W at 5 A, while 16 nC Q_g enables clean 10 ns rise/fall edges with 5 Ω gate resistor.	Use Scenario: H-bridge leg for 12–36 V brushed DC motor in factory automation actuator. IC Role / Device Role / Timing Role: Low-side switching element handling bidirectional current up to 7 A peak. Use Value: Repetitive avalanche rating absorbs inductive kickback during PWM commutation; body diode t_rr = 130 ns minimizes cross-conduction loss.
Load Switch for 48 V Telecom System	Overvoltage Protection Circuit
Use Scenario: Hot-swap controller for redundant 48 V backplane supply in telecom shelf. IC Role / Device Role / Timing Role: Main pass transistor enabling soft-start and current limiting via external sense resistor. Use Value: 100 V V_DS provides 2× margin over 48 V nominal rail; 7.7 A I_D supports 10 A inrush with 25 °C derating.	Use Scenario: Crowbar device triggered by overvoltage comparator in medical power supply. IC Role / Device Role / Timing Role: Fast-acting shunt switch clamping output to ground during fault. Use Value: 210 mJ E_AS sustains 100 ms overvoltage event at 50 V without failure; dV/dt immunity prevents spurious triggering.

DC-DC Converter High-Side Switch

Industrial Motor Driver

Use Scenario: Synchronous buck converter in 24 V input industrial PLC power module.

IC Role / Device Role / Timing Role: High-side main switch operating at 250 kHz with 30 ns dead-time control.

Use Value: 0.27 Ω R_DS(on) keeps conduction loss below 0.6 W at 5 A, while 16 nC Q_g enables clean 10 ns rise/fall edges with 5 Ω gate resistor.

Use Scenario: H-bridge leg for 12–36 V brushed DC motor in factory automation actuator.

IC Role / Device Role / Timing Role: Low-side switching element handling bidirectional current up to 7 A peak.

Use Value: Repetitive avalanche rating absorbs inductive kickback during PWM commutation; body diode t_rr = 130 ns minimizes cross-conduction loss.

Load Switch for 48 V Telecom System

Overvoltage Protection Circuit

Use Scenario: Hot-swap controller for redundant 48 V backplane supply in telecom shelf.

IC Role / Device Role / Timing Role: Main pass transistor enabling soft-start and current limiting via external sense resistor.

Use Value: 100 V V_DS provides 2× margin over 48 V nominal rail; 7.7 A I_D supports 10 A inrush with 25 °C derating.

Use Scenario: Crowbar device triggered by overvoltage comparator in medical power supply.

IC Role / Device Role / Timing Role: Fast-acting shunt switch clamping output to ground during fault.

Use Value: 210 mJ E_AS sustains 100 ms overvoltage event at 50 V without failure; dV/dt immunity prevents spurious triggering.

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
IRLR120NTRPBF	Same V_DS (100 V), lower R_DS(on) (0.19 Ω), higher Q_g (21 nC), same DPAK package.	Better conduction efficiency but requires stronger gate driver; less suitable for space-constrained 5 V gate-drive systems.	Choose IRFR120PBF-BE3 when gate drive current is limited or cost sensitivity outweighs 0.08 Ω R_DS(on) improvement.
STP10NK100ZFP	Higher V_DS (1000 V), much higher R_DS(on) (1.2 Ω), TO-220 package, no avalanche rating.	Designed for offline AC-DC primary side; incompatible with low-voltage DC-DC due to excessive on-loss and thermal limitations.	Select IRFR120PBF-BE3 for 24–48 V systems requiring compact surface-mount form factor and proven avalanche ruggedness.

Compared with IRFR120PBF-BE3, IRLLR120NTRPBF offers lower conduction loss but demands higher gate drive strength, while STP10NK100ZFP targets high-voltage AC applications and lacks the thermal and avalanche performance needed for robust low-voltage industrial switching.

Availability

IRFR120PBF-BE3 is available at Aetrix Electronics and suitable for industrial motor control, DC-DC power conversion, and telecom load switching requiring stable component supply across extended production lifecycles.

Supply support for IRFR120PBF-BE3 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 IRFR120PBF-BE3 belongs to Vishay's third-generation TrenchFET® power MOSFET family, engineered for optimal balance of low R_DS(on), fast switching, and rugged avalanche performance in surface-mount power management applications.

FAQ

What is the maximum continuous drain current for IRFR120PBF-BE3 at 100 °C case temperature?

The IRFR120PBF-BE3 supports 4.9 A continuous drain current at T_C = 100 °C, per its Absolute Maximum Ratings table. This derating reflects thermal limits of the DPAK package; actual usable current depends on PCB copper area and ambient conditions. For sustained 7.7 A operation, case temperature must remain at or below 25 °C with adequate heatsinking.

Does IRFR120PBF-BE3 have a specified avalanche energy rating?

Yes, the IRFR120PBF-BE3 is repetitively avalanche rated with 4.2 mJ E_AR and 7.7 A I_AR, and has a single-pulse avalanche energy rating of 210 mJ E_AS. These values are measured under defined test conditions (V_DD = 25 V, L = 5.3 mH, R_g = 25 Ω) and are critical for designing snubberless inductive load circuits such as relay drivers or solenoid controllers.

What is the gate threshold voltage range for IRFR120PBF-BE3?

The IRFR120PBF-BE3 has a gate-source threshold voltage (V_GS(th)) range of 2.0 V to 4.0 V at T_J = 25 °C, with ID = 250 μA. This ensures reliable turn-on with standard 5 V or 10 V logic-level gate drivers while maintaining noise immunity; the upper limit prevents unintended conduction in noisy industrial environments.

Can IRFR120PBF-BE3 be used in a half-bridge configuration?

Yes, the IRFR120PBF-BE3 is suitable for half-bridge topologies due to its fast switching (t_d(on) = 6.8 ns, t_f = 17 ns), low Q_gd/Q_g ratio (48 %), and 5.5 V/ns dV/dt immunity. Its 7.5 nH source inductance and 4.5 nH drain inductance minimize parasitic oscillation; proper gate loop layout and dead-time control >30 ns are recommended to prevent shoot-through.

What is the thermal resistance from junction to case (R_thJC) for IRFR120PBF-BE3?

The IRFR120PBF-BE3 has a maximum junction-to-case (drain) thermal resistance of 3.0 °C/W, measured from die to the exposed drain pad. This value assumes full solder coverage of the thermal pad to ≥1 cm² copper area; actual R_thJC may increase by 0.5–1.0 °C/W with incomplete pad wetting or thin copper layers.

IRFR120PBF-BE3 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):: 100 V

Current - Continuous Drain (Id) @ 25°C:: 7.7A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: -

Rds On (Max) @ Id, Vgs:: 270mOhm @ 4.6A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 16 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 360 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

IRFR120PBF-BE3 FAQ

1.How can I place an order for IRFR120PBF-BE3 through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFR120PBF-BE3 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 IRFR120PBF-BE3 reliable?

The price and inventory of IRFR120PBF-BE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFR120PBF-BE3 is usually 5 days.

3.What payment methods are accepted for IRFR120PBF-BE3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFR120PBF-BE3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFR120PBF-BE3?

IRFR120PBF-BE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFR120PBF-BE3 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 IRFR120PBF-BE3?

For technical support, including IRFR120PBF-BE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFR120PBF-BE3 requirements.

6.How does Aetrix verify that IRFR120PBF-BE3 is sourced from the original manufacturer or authorized distributors?

All IRFR120PBF-BE3 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 IRFR120PBF-BE3 meets industry standards.

7.What is the process for return or replacement of IRFR120PBF-BE3?

All IRFR120PBF-BE3 units undergo pre-shipment inspection (PSI). If there is an issue with IRFR120PBF-BE3, 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 IRFR120PBF-BE3 part is unused and in its original packaging.

Return procedure for IRFR120PBF-BE3:

1.Submit a request within 90 days.

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

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