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Vishay Siliconix IRFR420ATRPBF
- Part No.:
- IRFR420ATRPBF
- Manufacturer:
- Vishay Siliconix
- Category:
- FETs, MOSFETs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
IRFR420ATRPBF.pdf
- Description:
- MOSFET N-CH 500V 3.3A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,787
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Product details
Overview
IRFR420ATRPBF from Vishay Siliconix is a 500 V, 3.3 A N-channel enhancement-mode power MOSFET in DPAK (TO-252) package, featuring 3.0 Ω RDS(on) at VGS = 10 V, 17 nC total gate charge, and 140 mJ single-pulse avalanche energy - designed for high-voltage switching in offline SMPS and UPS systems.
For engineers reviewing the IRFR420ATRPBF datasheet, IRFR420ATRPBF pinout, IRFR420ATRPBF application, or IRFR420ATRPBF equivalent, key selection criteria include its 500 V blocking rating, low Qg/Qgd ratio for fast hard-switching, rugged body diode with 330 ns trr, and thermal resistance of 1.5 °C/W junction-to-case - critical for compact, convection-cooled power stages.
Technical Context
This MOSFET employs planar vertical DMOS technology optimized for high-voltage unclamped inductive switching. Its gate structure delivers low Qg (17 nC) and balanced Qgs/Qgd (4.3 nC / 8.5 nC), enabling clean turn-on/turn-off with minimal Miller-induced oscillation under 400 V VDS conditions.
It integrates a robust intrinsic body diode rated for 3.3 A continuous and 10 A pulsed conduction, with characterized reverse recovery (trr = 330–500 ns, Qrr = 760–1140 μC) and peak dV/dt immunity of 3.4 V/ns - supporting reliable operation in flyback and resonant topologies without external snubbing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 500 V - supports 380 V AC rectified input with ≥20 % margin for surge and ringing |
| RDS(on) | 3.0 Ω @ VGS = 10 V - enables <10 W conduction loss at 1.8 A RMS in 250 kHz SMPS |
| Qg | 17 nC - drives easily with standard 1 A gate drivers; reduces driver power dissipation |
| EAS | 140 mJ - withstands unclamped inductive energy in 45 mH loads at 2.5 A without failure |
| tr/tf | 12 ns / 13 ns - supports >500 kHz switching with controlled dv/dt and minimal EMI |
| RthJC | 1.5 °C/W - allows 83 W power dissipation with ≤125 °C case temperature rise above heatsink |
| VGS(th) | 2.0–4.5 V - ensures full enhancement with standard 5 V or 10 V logic-level gate drive |
Pinout & Package
DPAK (TO-252) package with exposed drain pad on bottom side for thermal conduction; 3-pin surface-mount outline measuring 6.22 mm × 6.73 mm × 1.78 mm (L × W × H), requiring minimum copper pad area of 10.67 mm × 5.69 mm per Vishay AN826.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G (Gate) | Control electrode | Accepts 0–10 V logic-level signal; 100 nA leakage ensures stable off-state with high-impedance drivers |
| D (Drain) | High-side power terminal | Connected to PCB thermal pad; carries full load current and absorbs avalanche energy during switching transients |
| S (Source) | Reference and return path | Common node for gate drive return and current sensing; ties to power ground plane with low-inductance layout |
Key Features
| Feature | Design Value |
|---|---|
| Low Qg/Qgd ratio | 17 nC total / 8.5 nC Miller charge - minimizes gate-drive power and suppresses false turn-on in high-dv/dt environments |
| Characterized Coss eff. | 28 pF - enables accurate soft-switching timing prediction in LLC and QR flyback designs |
| Avalanche-rated construction | 140 mJ single-pulse EAS - eliminates need for external clamping in cost-sensitive offline converters |
| Rugged body diode | trr = 330 ns, Qrr = 760 μC - reduces switching losses and voltage overshoot during freewheeling in synchronous rectifier replacement |
| Lead (Pb)-free & Halogen-free | Complies with RoHS Directive 2011/65/EU and JEDEC JS709C - suitable for industrial and consumer end-equipment |
Applications
| Offline AC-DC Adapters | Industrial UPS Inverters |
|---|---|
|
Use Scenario: 65 W universal-input flyback converter operating at 65 kHz with primary-side regulation. IC Role / Device Role / Timing Role: Primary switch handling 400 V DC link; turns on/off under PWM control with 12 ns rise time. Use Value: 3.0 Ω RDS(on) limits conduction loss to 1.2 W at 2 A peak, while 140 mJ EAS absorbs leakage inductance spikes without snubber. |
Use Scenario: 1 kVA double-conversion UPS inverter stage delivering 230 V AC from 400 V DC bus. IC Role / Device Role / Timing Role: Half-bridge high-side switch in 16 kHz SPWM stage; commutates inductive motor load current. Use Value: 3.4 V/ns dV/dt rating prevents spurious turn-on during bus transitions; body diode trr < 500 ns avoids cross-conduction loss. |
| LED Driver Power Stages | DC-DC Boost Converters |
|
Use Scenario: 150 W constant-current boost LED driver for street lighting, operating from 200–400 V DC input. IC Role / Device Role / Timing Role: Main switching element in continuous conduction mode (CCM) boost topology; handles 3.3 A average output current. Use Value: 500 V VDS accommodates 400 V input + 100 V transient margin; low Qg enables efficient 200 kHz operation with minimal gate loss. |
Use Scenario: 48 V to 380 V boost converter for energy storage system pre-charge and grid interface. IC Role / Device Role / Timing Role: High-side switch in interleaved two-phase boost; switches 2.5 A per phase at 100 kHz. Use Value: Characterized Ciss/Coss values allow precise dead-time optimization; RthJC = 1.5 °C/W supports forced-air cooling at 75 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage N-channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STP5NK50ZFP | 500 V, 4.5 A, RDS(on) = 1.4 Ω, Qg = 22 nC, TO-220FP package | Higher current rating but larger footprint and higher gate charge; requires heatsink mounting | Preferred where higher continuous current and lower RDS(on) justify through-hole assembly and thermal mass |
| FQP5N50CTF | 500 V, 4.5 A, RDS(on) = 1.4 Ω, Qg = 20 nC, TO-220 package | Same die performance as STP5NK50ZFP but non-isolated TO-220; no thermal pad | Used when board space permits larger package and isolation is not required for safety clearance |
Compared with IRFR420ATRPBF, STP5NK50ZFP and FQP5N50CTF offer lower RDS(on) and higher ID but require through-hole mounting and lack the DPAK's integrated thermal pad - making IRFR420ATRPBF preferable for compact, surface-mount, convection-cooled designs below 3.3 A RMS.
Availability
IRFR420ATRPBF is available at Aetrix Electronics and suitable for offline AC-DC adapters, industrial UPS inverters, and LED driver power stages requiring stable component supply and long-term manufacturability.
Supply support for IRFR420ATRPBF 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 power, signal, and sensing applications.
The IRFR420ATRPBF belongs to Vishay's high-voltage FR-series power MOSFET family, engineered for ruggedness and efficiency in offline switch-mode power supplies and uninterruptible power systems.
FAQ
What is the maximum continuous drain current for IRFR420ATRPBF at 100 °C case temperature?
The maximum continuous drain current for IRFR420ATRPBF is 2.1 A at TC = 100 °C, derated linearly from 3.3 A at 25 °C using a factor of 0.67 W/°C. This rating assumes proper PCB copper area per Vishay AN826 and ambient airflow sufficient to maintain case temperature.
Does IRFR420ATRPBF support logic-level gate drive?
IRFR420ATRPBF has a gate threshold voltage range of 2.0–4.5 V and fully enhances at VGS = 10 V, but it is not a logic-level MOSFET. It requires ≥5 V gate drive for partial conduction and 10 V for specified RDS(on); pairing with a dedicated gate driver (e.g., TC4427) is recommended for reliable switching.
What is the avalanche capability of IRFR420ATRPBF, and how is it tested?
IRFR420ATRPBF is rated for 140 mJ single-pulse avalanche energy (EAS) and 2.5 A repetitive avalanche current (IAR). Testing follows the unclamped inductive switching (UIS) method per Fig. 12a–b in the datasheet: L = 45 mH, IAS = 2.5 A, Rg = 25 Ω, starting TJ = 25 °C.
Can IRFR420ATRPBF be used in place of IRFR420APbF?
Yes - IRFR420ATRPBF is the lead (Pb)-free and halogen-free version of IRFR420APbF, sharing identical electrical specifications, thermal performance, and DPAK (TO-252) mechanical dimensions. The "TR" suffix denotes tape-and-reel packaging, and "PBF" indicates RoHS-compliant finish; both are drop-in replacements.
What is the thermal resistance from junction to case (RthJC) for IRFR420ATRPBF?
The maximum junction-to-case (drain) thermal resistance for IRFR420ATRPBF is 1.5 °C/W, measured from the silicon die to the exposed drain pad on the underside of the DPAK package. This value enables direct thermal coupling to a heatsink or internal PCB copper layer for efficient heat removal.
IRFR420ATRPBF 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:
- 3.3A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 3Ohm @ 1.5A, 10V
- Vgs(th) (Max) @ Id:
- 4.5V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 17 nC @ 10 V
- Vgs (Max):
- ±30V
- Input Capacitance (Ciss) (Max) @ Vds:
- 340 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 83W (Tc)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
IRFR420ATRPBF FAQ
1.How can I place an order for IRFR420ATRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IRFR420ATRPBF 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 IRFR420ATRPBF reliable?
The price and inventory of IRFR420ATRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFR420ATRPBF is usually 5 days.
3.What payment methods are accepted for IRFR420ATRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFR420ATRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRFR420ATRPBF?
IRFR420ATRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRFR420ATRPBF 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 IRFR420ATRPBF?
For technical support, including IRFR420ATRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFR420ATRPBF requirements.
6.How does Aetrix verify that IRFR420ATRPBF is sourced from the original manufacturer or authorized distributors?
All IRFR420ATRPBF 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 IRFR420ATRPBF meets industry standards.
7.What is the process for return or replacement of IRFR420ATRPBF?
All IRFR420ATRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRFR420ATRPBF, 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 IRFR420ATRPBF part is unused and in its original packaging.
Return procedure for IRFR420ATRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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