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

Vishay Siliconix IRFR420TRRPBF

Name: IRFR420TRRPBF
Brand: Vishay Siliconix
SKU: IRFR420TRRPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFR420TRRPBF

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

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

Datasheet:: IRFR420TRRPBF.pdf

Description:: MOSFET N-CH 500V 2.4A DPAK

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Product details

Overview

IRFR420TRRPBF from Vishay Siliconix is a 500 V, 2.4 A N-channel enhancement-mode power MOSFET in DPAK (TO-252) surface-mount package, featuring 3.0 Ω R_DS(on) at V_GS = 10 V, 19 nC total gate charge, and repetitive avalanche rating-designed for high-voltage DC-DC converters, offline SMPS primary-side switching, and industrial motor control.

For engineers reviewing the IRFR420TRRPBF datasheet, IRFR420TRRPBF pinout, IRFR420TRRPBF application, or IRFR420TRRPBF equivalent, this part supports fast-switching, rugged unclamped inductive load handling, PCB-mount thermal management up to 2.5 W, and direct replacement in legacy IRF420-based designs requiring Pb-free compliance and tape-and-reel delivery.

Technical Context

This third-generation power MOSFET uses planar V-groove technology to achieve low on-resistance with robust avalanche capability. Its 500 V V_DS rating and 2.4 A continuous drain current at T_C = 25 °C support operation in flyback and forward converter primary switches where voltage transients exceed 400 V.

The device integrates a fast-recovery body diode (t_rr = 260–520 ns, Q_rr = 0.70–1.4 μC) and exhibits dynamic dV/dt immunity of 3.5 V/ns-enabling stable operation in high-di/dt environments without external snubbers in properly laid-out PCBs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	500 V - Withstands full mains-derived DC bus voltages in 230 VAC offline applications
R_DS(on)	3.0 Ω @ V_GS = 10 V - Enables <1.5 W conduction loss at 2.4 A, suitable for thermally constrained SMT layouts
Q_g	19 nC - Supports efficient gate drive with standard 12 V logic-level drivers; enables <33 ns turn-off delay
E_AS	400 mJ - Allows safe single-pulse energy absorption during transformer reset or inductive load switching
T_J Range	−55 to +150 °C - Qualified for industrial ambient and high-power density enclosed environments
R_thJC	3.0 °C/W - Enables direct heatsink mounting via exposed drain pad for >40 W power dissipation
I_D (T_C = 100 °C)	1.5 A - Derated current reflects real-world thermal limits when mounted on FR-4 PCB

Pinout & Package

DPAK (TO-252) surface-mount package with exposed drain pad for thermal and electrical connection. Standard lead pitch (2.29 mm), 6.35 mm × 6.73 mm footprint, and 1.40–1.78 mm height per JEDEC outline.

Pin/Terminal	Circuit Role	Design Meaning
G (Gate)	Control input	Accepts 10 V logic-level drive; threshold voltage 2.0–4.0 V ensures reliable turn-on with standard PWM controllers
D (Drain)	High-voltage power output	Connected to exposed copper pad; carries full switched current and requires thermal relief in PCB layout
S (Source)	Power return reference	Provides ground reference for gate drive; internal source inductance (7.5 nH) affects high-speed switching stability

Key Features

Feature	Design Value
Repetitive avalanche rated	2.4 A I_AR, 4.2 mJ E_AR - Enables reliable operation under repeated inductive switching stress without derating
Dynamic dV/dt immunity	3.5 V/ns - Prevents false turn-on during high-slew-rate voltage transients in flyback snubberless designs
Fast switching performance	t_d(off) = 33 ns, t_f = 16 ns - Reduces switching losses in 100–500 kHz SMPS topologies
Low gate charge	Q_gd = 13 nC - Minimizes Miller plateau time and improves controllability during hard commutation
Surface-mount (DPAK)	Compatible with vapor-phase and IR reflow - Supports automated assembly and high-density board layouts

Applications

Industrial Motor Drives	Offline AC-DC Adapters
Use Scenario: Half-bridge high-side switch in 24–48 V BLDC gate driver stages. IC Role / Device Role / Timing Role: Power switch controlling phase current flow; operates at 20–100 kHz with precise dead-time control. Use Value: 3.0 Ω R_DS(on) minimizes conduction loss in compact heatsinkless designs; avalanche rating absorbs back-EMF spikes.	Use Scenario: Primary-side switch in 15–30 W universal-input flyback converters. IC Role / Device Role / Timing Role: High-voltage switching element turning on/off 400 V DC bus at 65–130 kHz. Use Value: 500 V V_DS margin accommodates 380 V peak rectified voltage plus 100 V transient; fast t_r/t_f reduces switching loss.
DC-DC Boost Converters	LED Driver Circuits
Use Scenario: Switching element in isolated boost PFC stage for commercial lighting ballasts. IC Role / Device Role / Timing Role: High-side switch operating in continuous conduction mode at 50–100 kHz. Use Value: Repetitive avalanche capability handles line surges; low Q_g enables efficient gate drive with UC3854-family controllers.	Use Scenario: Constant-current switch in high-bay LED driver secondary-side regulation. IC Role / Device Role / Timing Role: Low-duty-cycle PWM switch modulating LED string current at 1–10 kHz. Use Value: Body diode t_rr < 520 ns prevents cross-conduction in synchronous rectification; 150 °C T_J rating suits enclosed fixtures.

Industrial Motor Drives

Offline AC-DC Adapters

Use Scenario: Half-bridge high-side switch in 24–48 V BLDC gate driver stages.

IC Role / Device Role / Timing Role: Power switch controlling phase current flow; operates at 20–100 kHz with precise dead-time control.

Use Value: 3.0 Ω R_DS(on) minimizes conduction loss in compact heatsinkless designs; avalanche rating absorbs back-EMF spikes.

Use Scenario: Primary-side switch in 15–30 W universal-input flyback converters.

IC Role / Device Role / Timing Role: High-voltage switching element turning on/off 400 V DC bus at 65–130 kHz.

Use Value: 500 V V_DS margin accommodates 380 V peak rectified voltage plus 100 V transient; fast t_r/t_f reduces switching loss.

DC-DC Boost Converters

LED Driver Circuits

Use Scenario: Switching element in isolated boost PFC stage for commercial lighting ballasts.

IC Role / Device Role / Timing Role: High-side switch operating in continuous conduction mode at 50–100 kHz.

Use Value: Repetitive avalanche capability handles line surges; low Q_g enables efficient gate drive with UC3854-family controllers.

Use Scenario: Constant-current switch in high-bay LED driver secondary-side regulation.

IC Role / Device Role / Timing Role: Low-duty-cycle PWM switch modulating LED string current at 1–10 kHz.

Use Value: Body diode t_rr < 520 ns prevents cross-conduction in synchronous rectification; 150 °C T_J rating suits enclosed fixtures.

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
IRFR420PbF	Same die, identical specs, but supplied in bulk/tray-not tape-and-reel; no "TRR" suffix	No difference in circuit function or layout; differs only in packaging format and reel orientation	Select IRFR420TRRPBF for automated pick-and-place; choose IRFR420PbF for manual prototyping or low-volume hand-soldering
SiHFR420TR-GE3	Same Vishay die, identical R_DS(on), Q_g, and avalanche ratings; RoHS-compliant with different marking and traceability	Drop-in compatible in all electrical and thermal respects; validated for same industrial temperature cycling profiles	Prefer SiHFR420TR-GE3 for new designs requiring full Vishay GE3 qualification and extended material compliance documentation

Compared with IRFR420TRRPBF, IRFR420PbF offers identical performance but lacks tape-and-reel convenience for SMT lines, while SiHFR420TR-GE3 delivers identical functionality with enhanced supply-chain traceability and broader environmental compliance-making it preferable for automotive-adjacent industrial programs.

Availability

IRFR420TRRPBF is available at Aetrix Electronics and suitable for industrial motor drives, offline AC-DC adapters, and DC-DC boost converters requiring stable component supply, long-term lifecycle assurance, and Pb-free compliance.

Supply support for IRFR420TRRPBF 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 IRFR420TRRPBF belongs to Vishay's third-generation high-voltage power MOSFET family, engineered specifically for ruggedized switching in offline power supplies, motor controls, and industrial automation where avalanche tolerance and thermal stability are critical.

FAQ

What is the maximum continuous drain current for IRFR420TRRPBF at 100 °C case temperature?

The IRFR420TRRPBF supports 1.5 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 when mounted on standard FR-4 PCBs without heatsinking-designers must verify junction temperature using R_thJC = 3.0 °C/W and actual power dissipation.

Does IRFR420TRRPBF have a built-in body diode, and what are its key recovery parameters?

Yes, the IRFR420TRRPBF integrates a monolithic body diode with t_rr = 260–520 ns and Q_rr = 0.70–1.4 μC at T_J = 25 °C, I_F = 2.1 A, and dI/dt = 100 A/μs. These values enable use in synchronous rectification and freewheeling paths where controlled reverse recovery is essential to minimize switching loss and EMI.

Is IRFR420TRRPBF pin-compatible with older IRF420 variants like IRFU420?

No-IRFR420TRRPBF uses the DPAK (TO-252) surface-mount package with G-D-S pinout, whereas IRFU420 uses IPAK (TO-251) through-hole packaging with straight leads and different mechanical dimensions. Though electrically similar, they are not mechanically interchangeable without PCB redesign.

What is the gate threshold voltage range for IRFR420TRRPBF, and how does it affect drive requirements?

The IRFR420TRRPBF has a gate-source threshold voltage (V_GS(th)) of 2.0–4.0 V at I_D = 250 μA. This range confirms compatibility with standard 10 V gate drivers but indicates insufficient turn-on with 3.3 V logic alone-designers must ensure ≥5 V gate drive amplitude for reliable saturation and low R_DS(on).

Can IRFR420TRRPBF be used in avalanche mode, and what are the safe operating limits?

Yes, IRFR420TRRPBF is explicitly rated for repetitive avalanche operation: I_AR = 2.4 A and E_AR = 4.2 mJ. Safe use requires limiting pulse width per Fig. 11, maintaining T_J ≤ 150 °C, and ensuring V_DD ≤ V_DS; single-pulse energy up to 400 mJ is permitted under defined test conditions (L = 124 mH, R_g = 25 Ω).

IRFR420TRRPBF 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):: 500 V

Current - Continuous Drain (Id) @ 25°C:: 2.4A (Tc)

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

Rds On (Max) @ Id, Vgs:: 3Ohm @ 1.4A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 19 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:: DPAK

IRFR420TRRPBF FAQ

1.How can I place an order for IRFR420TRRPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFR420TRRPBF 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 IRFR420TRRPBF reliable?

The price and inventory of IRFR420TRRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFR420TRRPBF is usually 5 days.

3.What payment methods are accepted for IRFR420TRRPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFR420TRRPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFR420TRRPBF?

IRFR420TRRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFR420TRRPBF 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 IRFR420TRRPBF?

For technical support, including IRFR420TRRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFR420TRRPBF requirements.

6.How does Aetrix verify that IRFR420TRRPBF is sourced from the original manufacturer or authorized distributors?

All IRFR420TRRPBF 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 IRFR420TRRPBF meets industry standards.

7.What is the process for return or replacement of IRFR420TRRPBF?

All IRFR420TRRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRFR420TRRPBF, 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 IRFR420TRRPBF part is unused and in its original packaging.

Return procedure for IRFR420TRRPBF:

1.Submit a request within 90 days.

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

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