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

Vishay Siliconix IRFBC40SPBF

Name: IRFBC40SPBF
Brand: Vishay Siliconix
SKU: IRFBC40SPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFBC40SPBF

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: IRFBC40SPBF.pdf

Description:: MOSFET N-CH 600V 6.2A D2PAK

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Product details

Overview

IRFBC40SPBF from Vishay Siliconix is a 600 V, 6.2 A N-channel surface-mount power MOSFET in D2PAK (TO-263) package, featuring 1.2 Ω R_DS(on) at V_GS = 10 V, 60 nC total gate charge, and full avalanche rating-designed for high-voltage DC-DC converters, offline SMPS, and motor control snubber circuits.

For engineers reviewing the IRFBC40SPBF datasheet, IRFBC40SPBF pinout, IRFBC40SPBF application, or IRFBC40SPBF equivalent, key selection criteria include its 150 °C junction temperature rating, dynamic dV/dt capability of 3.0 V/ns, fast switching performance (td(on) = 13 ns), and ruggedized construction for unclamped inductive load handling.

Technical Context

This third-generation power MOSFET uses planar stripe silicon technology optimized for high-voltage switching with low conduction loss and robust avalanche energy handling (E_AS = 570 mJ). Its gate structure supports stable operation under fast dV/dt transients up to 3.0 V/ns without spurious turn-on.

The device integrates a low-inductance source connection (L_S = 7.5 nH) and exhibits tightly controlled threshold voltage (2.0–4.0 V) and low gate leakage (±100 nA), enabling reliable gate drive design in isolated flyback and forward converter topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	600 V - supports primary-side switching in 400 V AC-input offline power supplies
R_DS(on)	1.2 Ω @ V_GS = 10 V - enables ≤ 46 W conduction loss at 6.2 A continuous drain current
Q_g	60 nC - determines gate driver power requirement and switching transition time
E_AS	570 mJ - withstands single-pulse inductive energy without failure in snubber or clamp circuits
T_J max	150 °C - allows operation in thermally constrained industrial enclosures without derating
dV/dt rating	3.0 V/ns - suppresses false triggering during high-slew-rate voltage transients
I_D (T_C = 100 °C)	3.9 A - defines usable current in PCB-mounted thermal conditions with 1"² copper area

Pinout & Package

D2PAK (TO-263) surface-mount package with exposed thermal pad on underside; 3-pin configuration (G, D, S) supporting high-power dissipation (130 W at T_C = 25 °C) and low R_thJC = 1.0 °C/W.

Pin/Terminal	Circuit Role	Design Meaning
G (Gate)	Control terminal	Accepts 10 V logic-level drive; 8.3 nC Q_gs ensures predictable Miller plateau timing
D (Drain)	High-voltage output node	Rated for 600 V blocking; connects to transformer primary or bus rail in flyback/forward converters
S (Source)	Power return reference	Low-inductance internal path (7.5 nH); ties to ground plane or current-sense resistor for accurate sensing

Key Features

Feature	Design Value
Surface-mount D2PAK package	Enables automated assembly and higher power density than through-hole alternatives like IRFBC40L
Full avalanche rating	Guarantees single-pulse survival at E_AS = 570 mJ-critical for snubberless flyback designs
Dynamic dV/dt immunity	3.0 V/ns rating prevents false turn-on during rapid voltage transitions in high-frequency converters
150 °C operating temperature	Supports extended lifetime in sealed industrial power modules without active cooling
Low gate charge asymmetry	Q_gd/Q_g = 50 % (30/60 nC) enables controllable Miller-effect-limited switching speed

Applications

Offline AC-DC Adapters	Flyback Converter Primary Switch
Use Scenario: 65 W universal-input (85–265 VAC) adapter for consumer electronics. IC Role / Device Role / Timing Role: Primary-side high-voltage switch operating at 65 kHz with ZVS-assisted turn-on. Use Value: 1.2 Ω R_DS(on) minimizes conduction loss at peak line; 570 mJ E_AS absorbs leakage inductance spikes without external snubber.	Use Scenario: Isolated 12 V/5 A output for industrial PLC I/O modules. IC Role / Device Role / Timing Role: Main power switch in discontinuous conduction mode (DCM) flyback topology. Use Value: 3.0 V/ns dV/dt rating prevents false triggering during transformer reset; 150 °C rating sustains operation in 70 °C ambient enclosures.
Motor Drive Snubber Circuit	DC-DC Boost Stage
Use Scenario: 24 V brushed DC motor controller with regenerative braking. IC Role / Device Role / Timing Role: Clamping diode replacement in active snubber network across H-bridge freewheeling path. Use Value: Integrated body diode with t_rr = 450–940 ns and Q_rr = 3.8–7.9 μC enables soft recovery; avalanche rating handles inductive kickback.	Use Scenario: 48 V input to 380 V DC boost converter for solar microinverter front-end. IC Role / Device Role / Timing Role: High-side switch in interleaved two-phase boost stage operating at 100 kHz. Use Value: Low C_oss = 160 pF reduces switching loss at high voltage; 60 nC Q_g supports efficient gate driving with integrated half-bridge drivers.

Offline AC-DC Adapters

Flyback Converter Primary Switch

Use Scenario: 65 W universal-input (85–265 VAC) adapter for consumer electronics.

IC Role / Device Role / Timing Role: Primary-side high-voltage switch operating at 65 kHz with ZVS-assisted turn-on.

Use Value: 1.2 Ω R_DS(on) minimizes conduction loss at peak line; 570 mJ E_AS absorbs leakage inductance spikes without external snubber.

Use Scenario: Isolated 12 V/5 A output for industrial PLC I/O modules.

IC Role / Device Role / Timing Role: Main power switch in discontinuous conduction mode (DCM) flyback topology.

Use Value: 3.0 V/ns dV/dt rating prevents false triggering during transformer reset; 150 °C rating sustains operation in 70 °C ambient enclosures.

Motor Drive Snubber Circuit

DC-DC Boost Stage

Use Scenario: 24 V brushed DC motor controller with regenerative braking.

IC Role / Device Role / Timing Role: Clamping diode replacement in active snubber network across H-bridge freewheeling path.

Use Value: Integrated body diode with t_rr = 450–940 ns and Q_rr = 3.8–7.9 μC enables soft recovery; avalanche rating handles inductive kickback.

Use Scenario: 48 V input to 380 V DC boost converter for solar microinverter front-end.

IC Role / Device Role / Timing Role: High-side switch in interleaved two-phase boost stage operating at 100 kHz.

Use Value: Low C_oss = 160 pF reduces switching loss at high voltage; 60 nC Q_g supports efficient gate driving with integrated half-bridge drivers.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP6NK60ZFP	600 V, 5.5 A, R_DS(on) = 1.2 Ω, but lower E_AS = 320 mJ and no specified dV/dt rating	Lacks guaranteed 3.0 V/ns immunity-requires additional gate protection in noisy environments	Prefer IRFBC40SPBF where dV/dt robustness or avalanche margin is critical
IXTH6N60L2	600 V, 6.0 A, R_DS(on) = 1.3 Ω, higher Q_g = 72 nC, TO-247 package	Through-hole mounting and larger footprint limit board density vs. D2PAK	Choose IRFBC40SPBF for surface-mount automation and space-constrained layouts

Compared with STP6NK60ZFP and IXTH6N60L2, the IRFBC40SPBF delivers superior dV/dt immunity and surface-mount integration while matching R_DS(on) and avalanche energy-making it optimal for compact, noise-immune high-voltage switching.

Availability

IRFBC40SPBF is available at Aetrix Electronics and suitable for offline AC-DC adapters, flyback converter primary switches, and motor drive snubber circuits requiring stable component supply and long-term industrial availability.

Supply support for IRFBC40SPBF 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 applications.

The IRFBC40SPBF belongs to Vishay's third-generation high-voltage power MOSFET family, engineered for rugged switching in offline power conversion and motor control where avalanche capability and dV/dt immunity are essential.

FAQ

What is the maximum continuous drain current for IRFBC40SPBF at 100 °C case temperature?

The IRFBC40SPBF supports 3.9 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 at elevated temperatures and assumes standard PCB mounting with 1"² FR-4 copper area. The IRFBC40SPBF must be heatsinked or placed on adequate copper pour to sustain this current reliably.

Does IRFBC40SPBF have a fully rated avalanche capability, and what is the single-pulse energy limit?

Yes, the IRFBC40SPBF is fully avalanche rated with a single-pulse unclamped inductive energy limit (E_AS) of 570 mJ, tested per conditions in Figure 12 (V_DD = 50 V, L = 27 mH, R_g = 25 Ω, I_AS = 6.2 A). This rating is validated and guaranteed-not typical-enabling use in snubberless flyback and clamp circuits where inductive energy must be absorbed internally.

What package type does IRFBC40SPBF use, and how does it differ from IRFBC40LPbF?

The IRFBC40SPBF uses the D2PAK (TO-263) surface-mount package with an exposed thermal pad, whereas IRFBC40LPbF uses the I2PAK (TO-262) low-profile through-hole package. The D2PAK offers lower R_thJC (1.0 °C/W vs. ~1.2 °C/W), higher power dissipation (130 W vs. ~125 W), and compatibility with automated SMT assembly-making IRFBC40SPBF preferred for high-density, high-efficiency power designs.

What is the gate threshold voltage range for IRFBC40SPBF, and why does it matter for gate drive design?

The IRFBC40SPBF has a gate threshold voltage (V_GS(th)) range of 2.0 V to 4.0 V at T_J = 25 °C. This wide tolerance requires gate drivers capable of delivering ≥10 V to ensure full enhancement and minimal R_DS(on) across temperature and process variation. Using only 5 V logic-level drive risks incomplete turn-on and excessive conduction loss, so the IRFBC40SPBF is not a logic-level MOSFET.

Can IRFBC40SPBF replace IRFBC40 in existing designs, and what layout changes are needed?

Yes, the IRFBC40SPBF is a lead(Pb)-free and halogen-free drop-in replacement for the legacy IRFBC40 in D2PAK packaging, maintaining identical pinout, thermal profile, and electrical specifications. No PCB layout changes are required-only reflow profile adjustment to accommodate Pb-free solder (peak ~260 °C). The IRFBC40SPBF retains all performance characteristics of IRFBC40 while meeting modern RoHS and environmental compliance standards.

IRFBC40SPBF Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tube

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 600 V

Current - Continuous Drain (Id) @ 25°C:: 6.2A (Tc)

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

Rds On (Max) @ Id, Vgs:: 1.2Ohm @ 3.7A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 60 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1300 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 3.1W (Ta), 130W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-263 (D2PAK)

IRFBC40SPBF FAQ

1.How can I place an order for IRFBC40SPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFBC40SPBF 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 IRFBC40SPBF reliable?

The price and inventory of IRFBC40SPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFBC40SPBF is usually 5 days.

3.What payment methods are accepted for IRFBC40SPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFBC40SPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFBC40SPBF?

IRFBC40SPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFBC40SPBF 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 IRFBC40SPBF?

For technical support, including IRFBC40SPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFBC40SPBF requirements.

6.How does Aetrix verify that IRFBC40SPBF is sourced from the original manufacturer or authorized distributors?

All IRFBC40SPBF 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 IRFBC40SPBF meets industry standards.

7.What is the process for return or replacement of IRFBC40SPBF?

All IRFBC40SPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRFBC40SPBF, 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 IRFBC40SPBF part is unused and in its original packaging.

Return procedure for IRFBC40SPBF:

1.Submit a request within 90 days.

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

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