My Inquiry
My Account
Vishay Siliconix IRFR420PBF-BE3
.jpg)
- Part No.:
- IRFR420PBF-BE3
- Manufacturer:
- Vishay Siliconix
- Category:
- FETs, MOSFETs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
IRFR420PBF-BE3.pdf
- Description:
- N-CHANNEL 500V
- Quantity:
- Payment:
- Shipping:
Inventory:3,728
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
IRFR420PBF-BE3 from Vishay Siliconix is a 500 V, 2.4 A N-channel surface-mount power MOSFET in DPAK (TO-252) package, featuring 3.0 Ω RDS(on) at VGS = 10 V, 19 nC total gate charge, and repetitive avalanche rating-designed for high-voltage DC-DC converters, AC-DC auxiliary supplies, and industrial motor control snubbers.
For engineers reviewing the IRFR420PBF-BE3 datasheet, IRFR420PBF-BE3 pinout, IRFR420PBF-BE3 application, or IRFR420PBF-BE3 equivalent, this page delivers verified electrical specs, thermal derating behavior, body diode recovery performance (trr = 260–520 ns), PCB-mount power dissipation (2.5 W), and validated alternatives for high-reliability 500 V switching.
Technical Context
This third-generation planar vertical MOSFET employs ruggedized silicon design with dynamic dV/dt rating up to 3.5 V/ns and unclamped inductive switching capability (EAS = 400 mJ). Its gate threshold voltage (2.0–4.0 V) and low Qgd/Qg ratio (13/19 nC) support stable hard-switching operation in flyback and resonant topologies.
The device integrates a fast-recovery body diode (Qrr = 0.70–1.4 μC, trr = 260–520 ns) and exhibits linear thermal derating (0.020 W/°C on PCB mount), enabling predictable thermal management in compact surface-mount layouts without heatsinks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 500 V - Supports primary-side switching in offline SMPS up to 400 V DC bus with margin. |
| RDS(on) | 3.0 Ω @ VGS = 10 V - Enables <2.4 A continuous conduction with ≤17.3 W I²R loss at max current. |
| Qg | 19 nC - Determines gate drive power requirement; compatible with standard 1-A peak drivers. |
| EAS | 400 mJ - Withstands single-pulse inductive energy events without failure in snubber or clamp circuits. |
| trr | 260–520 ns - Limits reverse recovery losses during hard commutation in bridge configurations. |
| PD (PCB mount) | 2.5 W @ TA = 25 °C - Defines usable power envelope on 1" FR-4 board without thermal vias or copper pour. |
| RthJA (PCB) | 50 °C/W - Enables junction temperature estimation under real board-level thermal conditions. |
Pinout & Package
DPAK (TO-252) surface-mount package with exposed drain pad for thermal conduction; 3-pin configuration optimized for automated assembly and high-voltage isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G (Gate) | Control electrode | Accepts 10 V logic-level drive; 100 nA leakage ensures low standby current in always-on circuits. |
| D (Drain) | High-side power terminal | Connected to exposed thermal pad; carries full load current and supports avalanche energy absorption. |
| S (Source) | Reference node / return path | Provides low-inductance source connection; internal LS = 7.5 nH impacts switching waveform fidelity. |
Key Features
| Feature | Design Value |
|---|---|
| Repetitive avalanche rated | Enables reliable operation under transient overvoltage conditions (IAR = 2.4 A, EAR = 4.2 mJ) without derating. |
| Dynamic dV/dt immunity | Rated to 3.5 V/ns-prevents false turn-on in high-di/dt environments like motor drives and PFC stages. |
| Fast switching | td(on)/tr = 8.0/8.6 ns enables >500 kHz operation in isolated DC-DC converters with minimal overlap loss. |
| Surface-mount (DPAK) | Compatible with vapor-phase and IR reflow; footprint matches JEDEC TO-252AA for standardized PCB layout. |
| Low Qgd/Qg ratio | 68% of gate charge allocated to Miller region-improves controllability during cross-conduction in half-bridge designs. |
Applications
| AC-DC Auxiliary Power Supply | Industrial Motor Control Snubber |
|---|---|
Use Scenario: Provides bias supply for gate drivers and controllers in 3-phase inverters using discrete IGBTs or SiC MOSFETs. IC Role / Device Role / Timing Role: High-voltage switch in flyback converter operating at 65–100 kHz with 500 V input. Use Value: Avalanche rating absorbs transformer leakage energy; 2.5 W PCB-mount dissipation eliminates need for heatsink in space-constrained enclosures. |
Use Scenario: Clamps voltage spikes across IGBT collector-emitter during turn-off in 400 V motor drives. IC Role / Device Role / Timing Role: Passive snubber switch absorbing inductive kickback in <10 μs events. Use Value: 400 mJ single-pulse avalanche energy withstands repeated switching transients without degradation. |
| Offline LED Driver Primary Switch | High-Voltage DC-DC Converter |
Use Scenario: Primary-side switch in non-isolated buck-boost LED drivers for street lighting (input 277 V AC rectified). IC Role / Device Role / Timing Role: Hard-switched MOSFET operating at 50–150 kHz with 400 V DC link. Use Value: 3.5 V/ns dV/dt immunity prevents spurious turn-on from coupling noise in high-density LED driver PCBs. |
Use Scenario: Step-down regulator converting 400 V DC bus to 24 V for industrial PLC I/O modules. IC Role / Device Role / Timing Role: Synchronous rectifier or primary switch in forward or active-clamp topology. Use Value: Fast body diode (trr = 260 ns) reduces reverse recovery loss when used as freewheeling device in synchronous rectification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel 500 V power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SiHFR420-GE3 | Same die, identical RDS(on), Qg, and avalanche ratings; Pb-free/halogen-free per JEDEC J-STD-609. | No functional difference; fully interchangeable in new designs requiring RoHS-compliant materials. | Select SiHFR420-GE3 for lead-free manufacturing compliance without electrical or thermal trade-offs. |
| IRFU420PBF | Same silicon but IPAK (TO-251) through-hole package; higher RthJC (3.0 °C/W vs. DPAK's 3.0 °C/W), same 42 W case dissipation. | Requires wave soldering and larger PCB area; better suited for prototyping or low-volume manual assembly. | Choose IRFU420PBF only when through-hole mounting is mandated by mechanical or reliability requirements. |
Compared with IRFR420PBF-BE3, SiHFR420-GE3 offers identical electrical performance with enhanced environmental compliance, while IRFU420PBF trades surface-mount efficiency for through-hole robustness-neither is pin-compatible due to differing packages (DPAK vs. IPAK), requiring layout revision.
Availability
IRFR420PBF-BE3 is available at Aetrix Electronics and suitable for AC-DC auxiliary supplies, industrial motor control snubbers, and high-voltage DC-DC converters requiring stable component supply across extended production lifecycles.
Supply support for IRFR420PBF-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 power MOSFETs, diodes, and optoelectronics for industrial, automotive, and computing markets.
The IRFR420PBF-BE3 belongs to Vishay's third-generation high-voltage power MOSFET family, engineered for ruggedness, fast switching, and cost-effective integration into offline power conversion systems.
FAQ
What is the maximum continuous drain current for IRFR420PBF-BE3 at 100 °C case temperature?
The IRFR420PBF-BE3 supports 1.5 A continuous drain current at TC = 100 °C, reflecting its linear derating factor of 0.33 W/°C from the 42 W maximum at 25 °C. This value is critical for thermal design validation in enclosed industrial enclosures where case temperature exceeds ambient.
Does IRFR420PBF-BE3 have avalanche capability, and how is it rated?
Yes, IRFR420PBF-BE3 is repetitively avalanche rated: IAR = 2.4 A and EAR = 4.2 mJ under specified pulse conditions. It also supports single-pulse avalanche energy up to 400 mJ (EAS), verified per Fig. 12 in the official datasheet with L = 124 mH and Rg = 25 Ω.
What is the gate threshold voltage range for IRFR420PBF-BE3, and why does it matter?
The gate threshold voltage (VGS(th)) for IRFR420PBF-BE3 is 2.0–4.0 V at ID = 250 μA. This range ensures reliable turn-on with standard 5 V or 10 V gate drivers while preventing accidental activation from noise-critical in high-noise motor drive or industrial power environments.
Can IRFR420PBF-BE3 be used in synchronous rectification applications?
IRFR420PBF-BE3 can serve as a synchronous rectifier in medium-frequency DC-DC converters, leveraging its body diode's trr = 260–520 ns and VSD = 1.6 V at 2.4 A. However, its RDS(on) = 3.0 Ω limits efficiency above ~1 A; dedicated low-RDS(on) rectifiers are preferred for high-current outputs.
What is the thermal resistance from junction to ambient for IRFR420PBF-BE3 on a standard PCB?
When mounted on a 1" square FR-4 PCB, IRFR420PBF-BE3 has RthJA = 50 °C/W. This value-distinct from the 110 °C/W rating for free-air operation-enables accurate junction temperature prediction (TJ = TA + PD × 50) in real-world board-level thermal designs.
IRFR420PBF-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):
- 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:
- TO-252AA
IRFR420PBF-BE3 FAQ
1.How can I place an order for IRFR420PBF-BE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for IRFR420PBF-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 IRFR420PBF-BE3 reliable?
The price and inventory of IRFR420PBF-BE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFR420PBF-BE3 is usually 5 days.
3.What payment methods are accepted for IRFR420PBF-BE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFR420PBF-BE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRFR420PBF-BE3?
IRFR420PBF-BE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRFR420PBF-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 IRFR420PBF-BE3?
For technical support, including IRFR420PBF-BE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFR420PBF-BE3 requirements.
6.How does Aetrix verify that IRFR420PBF-BE3 is sourced from the original manufacturer or authorized distributors?
All IRFR420PBF-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 IRFR420PBF-BE3 meets industry standards.
7.What is the process for return or replacement of IRFR420PBF-BE3?
All IRFR420PBF-BE3 units undergo pre-shipment inspection (PSI). If there is an issue with IRFR420PBF-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 IRFR420PBF-BE3 part is unused and in its original packaging.
Return procedure for IRFR420PBF-BE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IRFR420PBF-BE3 Tags
-
BSZ180P03NS3EGATMA1
Infineon Technologies
-
SIRA14DP-T1-GE3
Vishay Siliconix
-
AO4419
Alpha & Omega Semiconductor Inc.
-
SISA14BDN-T1-GE3
Vishay Siliconix
-
PSMN9R5-30YLC,115
Nexperia USA Inc.
-
BUK9Y21-40E,115
Nexperia USA Inc.
-
RTQ035N03HZGTR
Rohm Semiconductor
-
FDMS7680
onsemi
-
RQ3E180BNTB
Rohm Semiconductor
-
STL6N2VH5
STMicroelectronics
-
DMPH4029LFGQ-7
Diodes Incorporated
-
DMT6015LSS-13
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
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…
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, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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.
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.
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…
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…
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…
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 …
