IRFB4020PBF N-Channel MOSFET with 200V drain-source voltage and 18A continuous drain current. Designed for Class-D audio amplifier applications with low on-resistance and optimized gate charge.
Mfr Part #:

IRFB4020PBF

Available from 2 distributors
Mfr Name: Infineon Technologies
Infineon Technologies
N-Channel MOSFET with 200V drain-source voltage and 18A continuous drain current. Designed for Class-D audio amplifier applications with low on-resistance and optimized gate charge.
✓ Total Stock: 13,516 pcs
$ Price Range: $0.79 - $2.58

IRFB4020PBF Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
13,270 pcs
13270 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
246 pcs
246 pcs On Request 1 On Request On Request 1026 On Request On Request

IRFB4020PBF Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Drain to Source Voltage (Vdss)
Drive Voltage (Max Rds On, Min Rds On)
FET Type
Gate Charge (Qg) (Max) @ Vgs
Input Capacitance (Ciss) (Max) @ Vds
Lead Style
Mounting Type
Operating Temperature
Power Dissipation (Max)
Rds On (Max) @ Id, Vgs
Storage Temperature
Supplier Device Package
Tape & Reel
Technology
Vgs (Max)
Vgs(th) (Max) @ Id

IRFB4020PBF Description

Short technical summary and product information.

This Digital Audio MOSFET is specifically designed for Class-D audio amplifier applications. It utilizes advanced processing to achieve low on-resistance per silicon area. Gate charge, body-diode reverse recovery, and internal gate resistance are optimized to improve key Class-D audio amplifier performance factors such as efficiency, THD, and EMI. Additionally, it features a 175°C operating junction temperature and repetitive avalanche capability.

 

Key electrical specifications include a maximum drain-source voltage of 200V, typical on-resistance of 80 milliohms at 10V gate drive, and total gate charge of 18 nC. The switching charge is 6.7 nC and internal gate resistance is 3.2 ohms. Input capacitance is 1200 pF at 50V drain-source voltage. Continuous drain current is rated at 18A at 25°C case temperature and 13A at 100°C.

 

The device is packaged in a TO-220-3 (TO-220AB) through-hole package, suitable for board-level mounting. Thermal characteristics include a junction-to-case thermal resistance of 1.43°C/W and a junction-to-ambient resistance of 62°C/W. Maximum power dissipation is 100W at 25°C case temperature. The operating junction temperature range is -55°C to 175°C.

IRFB4020PBF Quick Information

Product Type: MOSFET
Series: IRFB4020PbF
Canonical Name: IRFB4020PBF N-Channel MOSFET
Subcategory: Single MOSFET

IRFB4020PBF Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

IRFB4020PBF Estimated Pricing

Qty Low High
1+ $2.58 $2.58
10+ $1.26 $1.26
100+ $1.06 $1.06
500+ $0.89 $0.89
1,000+ $0.79 $0.79

Estimated market price range - modelled values for guidance only, not live distributor offers.

IRFB4020PBF Features

  • 200V drain-source voltage rating.
  • 18A continuous drain current at 25°C.
  • Low typical on-resistance of 80 milliohms.
  • Optimized for Class-D audio amplifier applications.
  • 175°C maximum operating junction temperature.

IRFB4020PBF Applications

  • Ideal for Class-D audio amplifier power stages.
  • Suitable for high-efficiency switching power supplies.
  • Used in applications requiring low EMI and THD.

IRFB4020PBF FAQs

7 frequently asked questions generated from this part’s specifications.
What is the drain-source voltage rating of the IRFB4020PBF?

Maximum drain-source voltage is 200V.

What package does the IRFB4020PBF come in?

TO-220-3 package (through-hole, TO-220AB).

What is the operating temperature range for the IRFB4020PBF?

Operating junction temperature range is -55°C to 175°C.

Is the IRFB4020PBF RoHS compliant?

Listed as RoHS3 compliant, but unverified.

What is the gate threshold voltage of the IRFB4020PBF?

Minimum 3.0V, maximum 4.9V at Id=100µA.

What is the typical on-resistance of the IRFB4020PBF?

Typical on-resistance is 80 milliohms at 10V gate drive and 11A drain current.

What is the total gate charge of the IRFB4020PBF?

Typical total gate charge is 18 nC at 10V gate-source voltage.

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